Why does the system (Ubuntu 18.04.1) report 11.8Gb of total Ram when I installed 32Gb?
2
I don't undestand why my Ubuntu 18.04 reports 11.8Gb instead of expected +/-32Gb.
I have 2 physical "pieces" of 16Gb RAM each on a Dell laptop Precision 7510.
OS is 64 bits:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Ubuntu reports 11.8Gb, command htop reports 11.8Gb of max RAM.
We made some tests at work:
- we updated the bios to latest from Dell v1.16.3. Nothing changed.
- with other pieces of 2x8Gb RAM from another colleague laptop, OS still reports 11.8Gb. Nothing changed
with only one piece of my 16Gb (testing both of my memory pieces one at a time), OS reported ... 16Gb ! Like if problem occurs only when there are 2 pieces of RAM in it, 2x16, or 2x8- we booted on a bootable Linux usb key (usb key of a colleague, this was not an Ubuntu, I don't asked him OS), and the 32Gb were detected by this alternate Linux OS!
Edit 2019/01/27 : I booted on a bootable USB key with a Live Ubuntu 18.04, result is same, vanilla Ubuntu 18.04 reports 11.8Go.
In this question, a quote of a line from /var/log/kern.log about memory may indicate some memory is reserved for video.
In my /var/log/kern.log, sometime this line says about 12Gb, sometime 16Gb:
Jan 24 11:06:29 proust kernel: [ 0.000000] Memory: 12027524K/12374028K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 346504K reserved, 0K cma-reserved)
...
Jan 25 16:01:55 proust kernel: [ 0.000000] Memory: 16182536K/16592532K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 409996K reserved, 0K cma-reserved)
Are those 12027524K available corresponding to the 11.8Gb the OS reports?
ie, if I took a screenshot when it indicated 16182536K, would OS reported then 16Gb available instead of 11.8 ?
Some extracts of /var/log/kern.log which might be helpful or not.
Jan 22 10:28:11 proust kernel: [ 7.518122] Adding 33192956k swap on /dev/nvme0n1p5. Priority:-2 extents:1 across:33192956k SSFS
[...]
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] Detected VRAM RAM=2048M, BAR=256M
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] RAM width 128bits DDR
Jan 22 10:28:11 proust kernel: [ 1.655422] [TTM] Zone kernel: Available graphics memory: 6044034 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Initializing pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655444] [TTM] Initializing DMA pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of VRAM memory ready
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of GTT memory ready.
[...]
Jan 22 10:28:11 proust kernel: [ 1.844114] [drm] Memory usable by graphics device = 4096M
and also, some errors (I never checked this /var/log/kern.log file)
Jan 22 10:28:11 proust kernel: [ 5.573929] EXT4-fs (nvme0n1p1): re-mounted. Opts: errors=remount-ro
...
Jan 22 10:28:11 proust kernel: [ 6.040729] thermal thermal_zone10: failed to read out thermal zone (-61)
...
Jan 22 10:28:11 proust kernel: [ 10.690615] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
...
Jan 22 10:28:16 proust kernel: [ 15.304753] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
...
Jan 22 10:28:16 proust kernel: [ 15.304764] ACPI Error: Method parse/execution failed _GPE._E42, AE_ALREADY_EXISTS (20170831/psparse-550)
...
Jan 22 10:28:21 proust kernel: [ 20.552778] xhci_hcd 0000:3c:00.0: Host halt failed, -19
Jan 22 10:28:21 proust kernel: [ 20.552780] xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
...
Jan 22 10:30:10 proust kernel: [ 129.221450] radeon 0000:01:00.0: failed VCE resume (-22).
...
Jan 22 10:30:11 proust kernel: [ 130.876028] [drm:uvd_v1_0_ib_test [radeon]] *ERROR* radeon: fence wait timed out.
Jan 22 10:30:11 proust kernel: [ 130.876086] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 5 (-110).
Jan 22 10:30:11 proust kernel: [ 130.876107] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876149] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876190] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876230] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 6 (-12).
Jan 22 10:30:11 proust kernel: [ 130.876245] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876282] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876318] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876355] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 7 (-12).
...
Jan 22 10:30:22 proust kernel: [ 141.892295] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
I see also a lot of non error lines:
Jan 22 18:42:28 proust kernel: [29667.466039] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.
Here are some commands found on other threads:
$ cat /proc/meminfo
MemTotal: 12324368 kB
MemFree: 267520 kB
MemAvailable: 5806556 kB
Buffers: 1055348 kB
Cached: 5303968 kB
SwapCached: 0 kB
Active: 6774156 kB
Inactive: 4251464 kB
Active(anon): 4678200 kB
Inactive(anon): 1035304 kB
Active(file): 2095956 kB
Inactive(file): 3216160 kB
Unevictable: 112 kB
Mlocked: 112 kB
SwapTotal: 33192956 kB
SwapFree: 33192956 kB
Dirty: 4360 kB
Writeback: 0 kB
AnonPages: 4666392 kB
Mapped: 912788 kB
Shmem: 1047204 kB
Slab: 724556 kB
SReclaimable: 554796 kB
SUnreclaim: 169760 kB
KernelStack: 22000 kB
PageTables: 105136 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 39355140 kB
Committed_AS: 18975512 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 466080 kB
DirectMap2M: 12146688 kB
DirectMap1G: 1048576 kB
$ free
total used free shared buff/cache available
Mem: 12324368 5342192 1503780 1142692 5478396 5511600
Swap: 33192956 0 33192956
And finally, result of command dmidecode (which I found here) which looks like it sees all the RAM (2 memory devices of 16384 MB each: Handle 0x0049 and Handle 0x004B and 2 available / empty slots Handle 0x004A and Handle 0x004BC):
$ sudo dmidecode
[...]
Handle 0x0048, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0049, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12161215
Asset Tag: 2C0C0000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 2
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12121212
Asset Tag: 00000000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004D, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x0048
Partition Width: 2
Any clue, explanation for my case, or information to verify is welcome.
Edit 2019-01-28
Result of memtest86 (default test, took about 7.5 hours)
It reports a FAIL with 25/48 tests passed (52%).
Could those error be responsible of Ubuntu not displaying 28/32Gb available, but other distrib like Fedora do?
18.04 dell laptop ram system-info
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
add a comment |
2
I don't undestand why my Ubuntu 18.04 reports 11.8Gb instead of expected +/-32Gb.
I have 2 physical "pieces" of 16Gb RAM each on a Dell laptop Precision 7510.
OS is 64 bits:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Ubuntu reports 11.8Gb, command htop reports 11.8Gb of max RAM.
We made some tests at work:
- we updated the bios to latest from Dell v1.16.3. Nothing changed.
- with other pieces of 2x8Gb RAM from another colleague laptop, OS still reports 11.8Gb. Nothing changed
with only one piece of my 16Gb (testing both of my memory pieces one at a time), OS reported ... 16Gb ! Like if problem occurs only when there are 2 pieces of RAM in it, 2x16, or 2x8- we booted on a bootable Linux usb key (usb key of a colleague, this was not an Ubuntu, I don't asked him OS), and the 32Gb were detected by this alternate Linux OS!
Edit 2019/01/27 : I booted on a bootable USB key with a Live Ubuntu 18.04, result is same, vanilla Ubuntu 18.04 reports 11.8Go.
In this question, a quote of a line from /var/log/kern.log about memory may indicate some memory is reserved for video.
In my /var/log/kern.log, sometime this line says about 12Gb, sometime 16Gb:
Jan 24 11:06:29 proust kernel: [ 0.000000] Memory: 12027524K/12374028K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 346504K reserved, 0K cma-reserved)
...
Jan 25 16:01:55 proust kernel: [ 0.000000] Memory: 16182536K/16592532K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 409996K reserved, 0K cma-reserved)
Are those 12027524K available corresponding to the 11.8Gb the OS reports?
ie, if I took a screenshot when it indicated 16182536K, would OS reported then 16Gb available instead of 11.8 ?
Some extracts of /var/log/kern.log which might be helpful or not.
Jan 22 10:28:11 proust kernel: [ 7.518122] Adding 33192956k swap on /dev/nvme0n1p5. Priority:-2 extents:1 across:33192956k SSFS
[...]
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] Detected VRAM RAM=2048M, BAR=256M
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] RAM width 128bits DDR
Jan 22 10:28:11 proust kernel: [ 1.655422] [TTM] Zone kernel: Available graphics memory: 6044034 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Initializing pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655444] [TTM] Initializing DMA pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of VRAM memory ready
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of GTT memory ready.
[...]
Jan 22 10:28:11 proust kernel: [ 1.844114] [drm] Memory usable by graphics device = 4096M
and also, some errors (I never checked this /var/log/kern.log file)
Jan 22 10:28:11 proust kernel: [ 5.573929] EXT4-fs (nvme0n1p1): re-mounted. Opts: errors=remount-ro
...
Jan 22 10:28:11 proust kernel: [ 6.040729] thermal thermal_zone10: failed to read out thermal zone (-61)
...
Jan 22 10:28:11 proust kernel: [ 10.690615] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
...
Jan 22 10:28:16 proust kernel: [ 15.304753] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
...
Jan 22 10:28:16 proust kernel: [ 15.304764] ACPI Error: Method parse/execution failed _GPE._E42, AE_ALREADY_EXISTS (20170831/psparse-550)
...
Jan 22 10:28:21 proust kernel: [ 20.552778] xhci_hcd 0000:3c:00.0: Host halt failed, -19
Jan 22 10:28:21 proust kernel: [ 20.552780] xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
...
Jan 22 10:30:10 proust kernel: [ 129.221450] radeon 0000:01:00.0: failed VCE resume (-22).
...
Jan 22 10:30:11 proust kernel: [ 130.876028] [drm:uvd_v1_0_ib_test [radeon]] *ERROR* radeon: fence wait timed out.
Jan 22 10:30:11 proust kernel: [ 130.876086] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 5 (-110).
Jan 22 10:30:11 proust kernel: [ 130.876107] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876149] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876190] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876230] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 6 (-12).
Jan 22 10:30:11 proust kernel: [ 130.876245] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876282] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876318] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876355] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 7 (-12).
...
Jan 22 10:30:22 proust kernel: [ 141.892295] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
I see also a lot of non error lines:
Jan 22 18:42:28 proust kernel: [29667.466039] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.
Here are some commands found on other threads:
$ cat /proc/meminfo
MemTotal: 12324368 kB
MemFree: 267520 kB
MemAvailable: 5806556 kB
Buffers: 1055348 kB
Cached: 5303968 kB
SwapCached: 0 kB
Active: 6774156 kB
Inactive: 4251464 kB
Active(anon): 4678200 kB
Inactive(anon): 1035304 kB
Active(file): 2095956 kB
Inactive(file): 3216160 kB
Unevictable: 112 kB
Mlocked: 112 kB
SwapTotal: 33192956 kB
SwapFree: 33192956 kB
Dirty: 4360 kB
Writeback: 0 kB
AnonPages: 4666392 kB
Mapped: 912788 kB
Shmem: 1047204 kB
Slab: 724556 kB
SReclaimable: 554796 kB
SUnreclaim: 169760 kB
KernelStack: 22000 kB
PageTables: 105136 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 39355140 kB
Committed_AS: 18975512 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 466080 kB
DirectMap2M: 12146688 kB
DirectMap1G: 1048576 kB
$ free
total used free shared buff/cache available
Mem: 12324368 5342192 1503780 1142692 5478396 5511600
Swap: 33192956 0 33192956
And finally, result of command dmidecode (which I found here) which looks like it sees all the RAM (2 memory devices of 16384 MB each: Handle 0x0049 and Handle 0x004B and 2 available / empty slots Handle 0x004A and Handle 0x004BC):
$ sudo dmidecode
[...]
Handle 0x0048, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0049, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12161215
Asset Tag: 2C0C0000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 2
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12121212
Asset Tag: 00000000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004D, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x0048
Partition Width: 2
Any clue, explanation for my case, or information to verify is welcome.
Edit 2019-01-28
Result of memtest86 (default test, took about 7.5 hours)
It reports a FAIL with 25/48 tests passed (52%).
Could those error be responsible of Ubuntu not displaying 28/32Gb available, but other distrib like Fedora do?
18.04 dell laptop ram system-info
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
2
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago
add a comment |
2
2
2
0
I don't undestand why my Ubuntu 18.04 reports 11.8Gb instead of expected +/-32Gb.
I have 2 physical "pieces" of 16Gb RAM each on a Dell laptop Precision 7510.
OS is 64 bits:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Ubuntu reports 11.8Gb, command htop reports 11.8Gb of max RAM.
We made some tests at work:
- we updated the bios to latest from Dell v1.16.3. Nothing changed.
- with other pieces of 2x8Gb RAM from another colleague laptop, OS still reports 11.8Gb. Nothing changed
with only one piece of my 16Gb (testing both of my memory pieces one at a time), OS reported ... 16Gb ! Like if problem occurs only when there are 2 pieces of RAM in it, 2x16, or 2x8- we booted on a bootable Linux usb key (usb key of a colleague, this was not an Ubuntu, I don't asked him OS), and the 32Gb were detected by this alternate Linux OS!
Edit 2019/01/27 : I booted on a bootable USB key with a Live Ubuntu 18.04, result is same, vanilla Ubuntu 18.04 reports 11.8Go.
In this question, a quote of a line from /var/log/kern.log about memory may indicate some memory is reserved for video.
In my /var/log/kern.log, sometime this line says about 12Gb, sometime 16Gb:
Jan 24 11:06:29 proust kernel: [ 0.000000] Memory: 12027524K/12374028K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 346504K reserved, 0K cma-reserved)
...
Jan 25 16:01:55 proust kernel: [ 0.000000] Memory: 16182536K/16592532K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 409996K reserved, 0K cma-reserved)
Are those 12027524K available corresponding to the 11.8Gb the OS reports?
ie, if I took a screenshot when it indicated 16182536K, would OS reported then 16Gb available instead of 11.8 ?
Some extracts of /var/log/kern.log which might be helpful or not.
Jan 22 10:28:11 proust kernel: [ 7.518122] Adding 33192956k swap on /dev/nvme0n1p5. Priority:-2 extents:1 across:33192956k SSFS
[...]
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] Detected VRAM RAM=2048M, BAR=256M
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] RAM width 128bits DDR
Jan 22 10:28:11 proust kernel: [ 1.655422] [TTM] Zone kernel: Available graphics memory: 6044034 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Initializing pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655444] [TTM] Initializing DMA pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of VRAM memory ready
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of GTT memory ready.
[...]
Jan 22 10:28:11 proust kernel: [ 1.844114] [drm] Memory usable by graphics device = 4096M
and also, some errors (I never checked this /var/log/kern.log file)
Jan 22 10:28:11 proust kernel: [ 5.573929] EXT4-fs (nvme0n1p1): re-mounted. Opts: errors=remount-ro
...
Jan 22 10:28:11 proust kernel: [ 6.040729] thermal thermal_zone10: failed to read out thermal zone (-61)
...
Jan 22 10:28:11 proust kernel: [ 10.690615] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
...
Jan 22 10:28:16 proust kernel: [ 15.304753] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
...
Jan 22 10:28:16 proust kernel: [ 15.304764] ACPI Error: Method parse/execution failed _GPE._E42, AE_ALREADY_EXISTS (20170831/psparse-550)
...
Jan 22 10:28:21 proust kernel: [ 20.552778] xhci_hcd 0000:3c:00.0: Host halt failed, -19
Jan 22 10:28:21 proust kernel: [ 20.552780] xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
...
Jan 22 10:30:10 proust kernel: [ 129.221450] radeon 0000:01:00.0: failed VCE resume (-22).
...
Jan 22 10:30:11 proust kernel: [ 130.876028] [drm:uvd_v1_0_ib_test [radeon]] *ERROR* radeon: fence wait timed out.
Jan 22 10:30:11 proust kernel: [ 130.876086] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 5 (-110).
Jan 22 10:30:11 proust kernel: [ 130.876107] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876149] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876190] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876230] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 6 (-12).
Jan 22 10:30:11 proust kernel: [ 130.876245] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876282] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876318] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876355] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 7 (-12).
...
Jan 22 10:30:22 proust kernel: [ 141.892295] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
I see also a lot of non error lines:
Jan 22 18:42:28 proust kernel: [29667.466039] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.
Here are some commands found on other threads:
$ cat /proc/meminfo
MemTotal: 12324368 kB
MemFree: 267520 kB
MemAvailable: 5806556 kB
Buffers: 1055348 kB
Cached: 5303968 kB
SwapCached: 0 kB
Active: 6774156 kB
Inactive: 4251464 kB
Active(anon): 4678200 kB
Inactive(anon): 1035304 kB
Active(file): 2095956 kB
Inactive(file): 3216160 kB
Unevictable: 112 kB
Mlocked: 112 kB
SwapTotal: 33192956 kB
SwapFree: 33192956 kB
Dirty: 4360 kB
Writeback: 0 kB
AnonPages: 4666392 kB
Mapped: 912788 kB
Shmem: 1047204 kB
Slab: 724556 kB
SReclaimable: 554796 kB
SUnreclaim: 169760 kB
KernelStack: 22000 kB
PageTables: 105136 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 39355140 kB
Committed_AS: 18975512 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 466080 kB
DirectMap2M: 12146688 kB
DirectMap1G: 1048576 kB
$ free
total used free shared buff/cache available
Mem: 12324368 5342192 1503780 1142692 5478396 5511600
Swap: 33192956 0 33192956
And finally, result of command dmidecode (which I found here) which looks like it sees all the RAM (2 memory devices of 16384 MB each: Handle 0x0049 and Handle 0x004B and 2 available / empty slots Handle 0x004A and Handle 0x004BC):
$ sudo dmidecode
[...]
Handle 0x0048, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0049, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12161215
Asset Tag: 2C0C0000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 2
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12121212
Asset Tag: 00000000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004D, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x0048
Partition Width: 2
Any clue, explanation for my case, or information to verify is welcome.
Edit 2019-01-28
Result of memtest86 (default test, took about 7.5 hours)
It reports a FAIL with 25/48 tests passed (52%).
Could those error be responsible of Ubuntu not displaying 28/32Gb available, but other distrib like Fedora do?
18.04 dell laptop ram system-info
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
I don't undestand why my Ubuntu 18.04 reports 11.8Gb instead of expected +/-32Gb.
I have 2 physical "pieces" of 16Gb RAM each on a Dell laptop Precision 7510.
OS is 64 bits:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Ubuntu reports 11.8Gb, command htop reports 11.8Gb of max RAM.
We made some tests at work:
- we updated the bios to latest from Dell v1.16.3. Nothing changed.
- with other pieces of 2x8Gb RAM from another colleague laptop, OS still reports 11.8Gb. Nothing changed
with only one piece of my 16Gb (testing both of my memory pieces one at a time), OS reported ... 16Gb ! Like if problem occurs only when there are 2 pieces of RAM in it, 2x16, or 2x8- we booted on a bootable Linux usb key (usb key of a colleague, this was not an Ubuntu, I don't asked him OS), and the 32Gb were detected by this alternate Linux OS!
Edit 2019/01/27 : I booted on a bootable USB key with a Live Ubuntu 18.04, result is same, vanilla Ubuntu 18.04 reports 11.8Go.
In this question, a quote of a line from /var/log/kern.log about memory may indicate some memory is reserved for video.
In my /var/log/kern.log, sometime this line says about 12Gb, sometime 16Gb:
Jan 24 11:06:29 proust kernel: [ 0.000000] Memory: 12027524K/12374028K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 346504K reserved, 0K cma-reserved)
...
Jan 25 16:01:55 proust kernel: [ 0.000000] Memory: 16182536K/16592532K available (12300K kernel code, 2472K rwdata, 4252K rodata, 2408K init, 2416K bss, 409996K reserved, 0K cma-reserved)
Are those 12027524K available corresponding to the 11.8Gb the OS reports?
ie, if I took a screenshot when it indicated 16182536K, would OS reported then 16Gb available instead of 11.8 ?
Some extracts of /var/log/kern.log which might be helpful or not.
Jan 22 10:28:11 proust kernel: [ 7.518122] Adding 33192956k swap on /dev/nvme0n1p5. Priority:-2 extents:1 across:33192956k SSFS
[...]
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] Detected VRAM RAM=2048M, BAR=256M
Jan 22 10:28:11 proust kernel: [ 1.655250] [drm] RAM width 128bits DDR
Jan 22 10:28:11 proust kernel: [ 1.655422] [TTM] Zone kernel: Available graphics memory: 6044034 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
Jan 22 10:28:11 proust kernel: [ 1.655423] [TTM] Initializing pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655444] [TTM] Initializing DMA pool allocator
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of VRAM memory ready
Jan 22 10:28:11 proust kernel: [ 1.655454] [drm] radeon: 2048M of GTT memory ready.
[...]
Jan 22 10:28:11 proust kernel: [ 1.844114] [drm] Memory usable by graphics device = 4096M
and also, some errors (I never checked this /var/log/kern.log file)
Jan 22 10:28:11 proust kernel: [ 5.573929] EXT4-fs (nvme0n1p1): re-mounted. Opts: errors=remount-ro
...
Jan 22 10:28:11 proust kernel: [ 6.040729] thermal thermal_zone10: failed to read out thermal zone (-61)
...
Jan 22 10:28:11 proust kernel: [ 10.690615] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
...
Jan 22 10:28:16 proust kernel: [ 15.304753] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
...
Jan 22 10:28:16 proust kernel: [ 15.304764] ACPI Error: Method parse/execution failed _GPE._E42, AE_ALREADY_EXISTS (20170831/psparse-550)
...
Jan 22 10:28:21 proust kernel: [ 20.552778] xhci_hcd 0000:3c:00.0: Host halt failed, -19
Jan 22 10:28:21 proust kernel: [ 20.552780] xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
...
Jan 22 10:30:10 proust kernel: [ 129.221450] radeon 0000:01:00.0: failed VCE resume (-22).
...
Jan 22 10:30:11 proust kernel: [ 130.876028] [drm:uvd_v1_0_ib_test [radeon]] *ERROR* radeon: fence wait timed out.
Jan 22 10:30:11 proust kernel: [ 130.876086] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 5 (-110).
Jan 22 10:30:11 proust kernel: [ 130.876107] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876149] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876190] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876230] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 6 (-12).
Jan 22 10:30:11 proust kernel: [ 130.876245] radeon 0000:01:00.0: scheduling IB failed (-12).
Jan 22 10:30:11 proust kernel: [ 130.876282] [drm:radeon_vce_get_create_msg [radeon]] *ERROR* radeon: failed to schedule ib (-12).
Jan 22 10:30:11 proust kernel: [ 130.876318] [drm:radeon_vce_ib_test [radeon]] *ERROR* radeon: failed to get create msg (-12).
Jan 22 10:30:11 proust kernel: [ 130.876355] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 7 (-12).
...
Jan 22 10:30:22 proust kernel: [ 141.892295] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload2-346)
I see also a lot of non error lines:
Jan 22 18:42:28 proust kernel: [29667.466039] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS.
Here are some commands found on other threads:
$ cat /proc/meminfo
MemTotal: 12324368 kB
MemFree: 267520 kB
MemAvailable: 5806556 kB
Buffers: 1055348 kB
Cached: 5303968 kB
SwapCached: 0 kB
Active: 6774156 kB
Inactive: 4251464 kB
Active(anon): 4678200 kB
Inactive(anon): 1035304 kB
Active(file): 2095956 kB
Inactive(file): 3216160 kB
Unevictable: 112 kB
Mlocked: 112 kB
SwapTotal: 33192956 kB
SwapFree: 33192956 kB
Dirty: 4360 kB
Writeback: 0 kB
AnonPages: 4666392 kB
Mapped: 912788 kB
Shmem: 1047204 kB
Slab: 724556 kB
SReclaimable: 554796 kB
SUnreclaim: 169760 kB
KernelStack: 22000 kB
PageTables: 105136 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 39355140 kB
Committed_AS: 18975512 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 466080 kB
DirectMap2M: 12146688 kB
DirectMap1G: 1048576 kB
$ free
total used free shared buff/cache available
Mem: 12324368 5342192 1503780 1142692 5478396 5511600
Swap: 33192956 0 33192956
And finally, result of command dmidecode (which I found here) which looks like it sees all the RAM (2 memory devices of 16384 MB each: Handle 0x0049 and Handle 0x004B and 2 available / empty slots Handle 0x004A and Handle 0x004BC):
$ sudo dmidecode
[...]
Handle 0x0048, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0049, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12161215
Asset Tag: 2C0C0000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 16384 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 2
Type: DDR4
Type Detail: Synchronous
Speed: 2133 MT/s
Manufacturer: Micron
Serial Number: 12121212
Asset Tag: 00000000
Part Number: 16ATF2G64HZ-2G1A1
Rank: 2
Configured Clock Speed: 2133 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: 1.2 V
Handle 0x004C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0048
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x004D, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x0048
Partition Width: 2
Any clue, explanation for my case, or information to verify is welcome.
Edit 2019-01-28
Result of memtest86 (default test, took about 7.5 hours)
It reports a FAIL with 25/48 tests passed (52%).
Could those error be responsible of Ubuntu not displaying 28/32Gb available, but other distrib like Fedora do?
18.04 dell laptop ram system-info
18.04 dell laptop ram system-info
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
edited yesterday
el-teedee
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
asked Jan 25 at 23:41
el-teedeeel-teedee
1158
1158
Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
2
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago
add a comment |
Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
2
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago
Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
2
2
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago
add a comment |
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Can you run a memory test, as described in https://askubuntu.com/questions/917961/can-i-boot-memtest86-if-im-using-uefi
– Charles Green
yesterday
I added the result of memtest86. It reports 25/48 tests passed only.
– el-teedee
yesterday
2
I think that would qualify as errors in the memory sticks
– Charles Green
yesterday
With the borrowed 2 x 8 GB plus the single good 16 GB stick do you get 32 GB?
– WinEunuuchs2Unix
3 hours ago