/dev/rtc0 not enabled for wakeup events and Cannot write '0' to /sys/class/rtc/rtc0/wakealarm
I am having Ubuntu 13.04 desktop 64bit
When running rtcwake -s 30 , I get following results:
rtcwake: assuming RTC uses UTC ...
rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
rtcwake: /dev/rtc0 not enabled for wakeup events
Running fwts s3 --s3-quirks -a, I get a similar answer in the log:
Cannot write '0' to /sys/class/rtc/rtc0/wakealarm
Running sudo sh -c "echo 0 > /sys/class/rtc/rtc0/wakealarm , I get the result:
sh: 1: cannot create /sys/class/rtc/rtc0/wakealarm: Directory nonexistent
How this can be fixed ?
Or how to enable /dev/rtc0 ?
13.04 power-management
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
add a comment |
I am having Ubuntu 13.04 desktop 64bit
When running rtcwake -s 30 , I get following results:
rtcwake: assuming RTC uses UTC ...
rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
rtcwake: /dev/rtc0 not enabled for wakeup events
Running fwts s3 --s3-quirks -a, I get a similar answer in the log:
Cannot write '0' to /sys/class/rtc/rtc0/wakealarm
Running sudo sh -c "echo 0 > /sys/class/rtc/rtc0/wakealarm , I get the result:
sh: 1: cannot create /sys/class/rtc/rtc0/wakealarm: Directory nonexistent
How this can be fixed ?
Or how to enable /dev/rtc0 ?
13.04 power-management
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
add a comment |
I am having Ubuntu 13.04 desktop 64bit
When running rtcwake -s 30 , I get following results:
rtcwake: assuming RTC uses UTC ...
rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
rtcwake: /dev/rtc0 not enabled for wakeup events
Running fwts s3 --s3-quirks -a, I get a similar answer in the log:
Cannot write '0' to /sys/class/rtc/rtc0/wakealarm
Running sudo sh -c "echo 0 > /sys/class/rtc/rtc0/wakealarm , I get the result:
sh: 1: cannot create /sys/class/rtc/rtc0/wakealarm: Directory nonexistent
How this can be fixed ?
Or how to enable /dev/rtc0 ?
13.04 power-management
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
I am having Ubuntu 13.04 desktop 64bit
When running rtcwake -s 30 , I get following results:
rtcwake: assuming RTC uses UTC ...
rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
rtcwake: /dev/rtc0 not enabled for wakeup events
Running fwts s3 --s3-quirks -a, I get a similar answer in the log:
Cannot write '0' to /sys/class/rtc/rtc0/wakealarm
Running sudo sh -c "echo 0 > /sys/class/rtc/rtc0/wakealarm , I get the result:
sh: 1: cannot create /sys/class/rtc/rtc0/wakealarm: Directory nonexistent
How this can be fixed ?
Or how to enable /dev/rtc0 ?
13.04 power-management
13.04 power-management
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
edited Nov 16 '13 at 11:45
user164718
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
asked Oct 12 '13 at 13:45
David Van HuffelDavid Van Huffel
3561314
3561314
add a comment |
add a comment |
1 Answer
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on my ubuntu 12.04 (64bit) system sudo rtcwake -s 30 -mode mem works as desired (but i need to set mode to 'mem' (=suspend to ram) or 'disk' as the default mode of 'standby' is not supported on my system (acer laptop).
what hardware are you running your system on? does it have a rtc and can your system discover it (as a first step, check the output of ls -l /dev/rtc?)?
your output-line rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
might show a relevant part of the problem. on my system /sys/class/rtc/rtc0/device/power/wakeup is also not present (i don't get that error-msg) but a wakealarm-namedpipe is located in /sys/class/rtc/rtc0/wakealarm. does such exist on yours?
if this is the case, try to directly write into it, e.g. through
sudo sh -c ‘echo "+00-00-00 00:00:30" > /sys/class/rtc/rtc0/wakealarm'
note that this command does not set your system into sleep but only schedules a wakeup-alarm, so you might need to put your system to standby/sleep yourself.
then, what does cat /proc/driver/rtc say (especially lines starting with alrm_time, alrm_date and alrm_pending)?
probably not an answer but i can't comment yet...
EDIT: oops, just realized this was asked in 2012, not 2013...
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
add a comment |
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1 Answer
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1 Answer
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votes
on my ubuntu 12.04 (64bit) system sudo rtcwake -s 30 -mode mem works as desired (but i need to set mode to 'mem' (=suspend to ram) or 'disk' as the default mode of 'standby' is not supported on my system (acer laptop).
what hardware are you running your system on? does it have a rtc and can your system discover it (as a first step, check the output of ls -l /dev/rtc?)?
your output-line rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
might show a relevant part of the problem. on my system /sys/class/rtc/rtc0/device/power/wakeup is also not present (i don't get that error-msg) but a wakealarm-namedpipe is located in /sys/class/rtc/rtc0/wakealarm. does such exist on yours?
if this is the case, try to directly write into it, e.g. through
sudo sh -c ‘echo "+00-00-00 00:00:30" > /sys/class/rtc/rtc0/wakealarm'
note that this command does not set your system into sleep but only schedules a wakeup-alarm, so you might need to put your system to standby/sleep yourself.
then, what does cat /proc/driver/rtc say (especially lines starting with alrm_time, alrm_date and alrm_pending)?
probably not an answer but i can't comment yet...
EDIT: oops, just realized this was asked in 2012, not 2013...
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
add a comment |
on my ubuntu 12.04 (64bit) system sudo rtcwake -s 30 -mode mem works as desired (but i need to set mode to 'mem' (=suspend to ram) or 'disk' as the default mode of 'standby' is not supported on my system (acer laptop).
what hardware are you running your system on? does it have a rtc and can your system discover it (as a first step, check the output of ls -l /dev/rtc?)?
your output-line rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
might show a relevant part of the problem. on my system /sys/class/rtc/rtc0/device/power/wakeup is also not present (i don't get that error-msg) but a wakealarm-namedpipe is located in /sys/class/rtc/rtc0/wakealarm. does such exist on yours?
if this is the case, try to directly write into it, e.g. through
sudo sh -c ‘echo "+00-00-00 00:00:30" > /sys/class/rtc/rtc0/wakealarm'
note that this command does not set your system into sleep but only schedules a wakeup-alarm, so you might need to put your system to standby/sleep yourself.
then, what does cat /proc/driver/rtc say (especially lines starting with alrm_time, alrm_date and alrm_pending)?
probably not an answer but i can't comment yet...
EDIT: oops, just realized this was asked in 2012, not 2013...
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
add a comment |
on my ubuntu 12.04 (64bit) system sudo rtcwake -s 30 -mode mem works as desired (but i need to set mode to 'mem' (=suspend to ram) or 'disk' as the default mode of 'standby' is not supported on my system (acer laptop).
what hardware are you running your system on? does it have a rtc and can your system discover it (as a first step, check the output of ls -l /dev/rtc?)?
your output-line rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
might show a relevant part of the problem. on my system /sys/class/rtc/rtc0/device/power/wakeup is also not present (i don't get that error-msg) but a wakealarm-namedpipe is located in /sys/class/rtc/rtc0/wakealarm. does such exist on yours?
if this is the case, try to directly write into it, e.g. through
sudo sh -c ‘echo "+00-00-00 00:00:30" > /sys/class/rtc/rtc0/wakealarm'
note that this command does not set your system into sleep but only schedules a wakeup-alarm, so you might need to put your system to standby/sleep yourself.
then, what does cat /proc/driver/rtc say (especially lines starting with alrm_time, alrm_date and alrm_pending)?
probably not an answer but i can't comment yet...
EDIT: oops, just realized this was asked in 2012, not 2013...
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
on my ubuntu 12.04 (64bit) system sudo rtcwake -s 30 -mode mem works as desired (but i need to set mode to 'mem' (=suspend to ram) or 'disk' as the default mode of 'standby' is not supported on my system (acer laptop).
what hardware are you running your system on? does it have a rtc and can your system discover it (as a first step, check the output of ls -l /dev/rtc?)?
your output-line rtcwake: open failed: /sys/class/rtc/rtc0/device/power/wakeup: No such file or directory
might show a relevant part of the problem. on my system /sys/class/rtc/rtc0/device/power/wakeup is also not present (i don't get that error-msg) but a wakealarm-namedpipe is located in /sys/class/rtc/rtc0/wakealarm. does such exist on yours?
if this is the case, try to directly write into it, e.g. through
sudo sh -c ‘echo "+00-00-00 00:00:30" > /sys/class/rtc/rtc0/wakealarm'
note that this command does not set your system into sleep but only schedules a wakeup-alarm, so you might need to put your system to standby/sleep yourself.
then, what does cat /proc/driver/rtc say (especially lines starting with alrm_time, alrm_date and alrm_pending)?
probably not an answer but i can't comment yet...
EDIT: oops, just realized this was asked in 2012, not 2013...
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
answered Nov 16 '13 at 11:19
antiplexantiplex
261310
261310
add a comment |
add a comment |
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