Cfxtrjtrk

I've installed Xubuntu 15.04 on a Lenovo IdeaCentre A740 QHD with a Haswell CPU (BIOS revision 00KT19AUS) and NVIDIA GeForce GTX 850A 2GB. It's mostly working, except when I do a shutdown or reboot, it doesn't actually turn off the power after quitting everything:

So I have to click the power button to actually turn it off.

I've kept the Windows 8.1 installation in case there's any future firmware. Before installing Xubuntu, I turned off Fastboot from Windows, then installed Xubuntu. Unfortunately, the UEFI BIOS didn't let me change boot order so that Ubuntu actually started as default. I tried bcdedit /set {bootmgr} path EFIubuntushimx64.efi, tried turning off "quickboot" (whatever that is) in BIOS, tried the Boot-Repair program from a Live Session, and tried turning off SecureBoot, but still it would just boot Windows. I ended up, with the help of EricC^^ of #ubuntu on freenode, just switching around the .efi files to trick the boot manager into thinking Ubuntu was Windows:

cp /boot/efi/efi/boot/bootx64.efi{,.backup}

cp /boot/efi/efi/microsoft/boot/bootmgfw.efi{,.backup}

cp /boot/efi/efi/ubuntu/grubx64.efi /boot/efi/efi/boot/bootx64.efi

cp /boot/efi/efi/ubuntu/grubx64.efi /boot/efi/efi/microsoft/boot/bootmgfw.efi

cp /boot/efi/efi/ubuntu/grubx64.efi /boot/efi/efi/microsoft/boot/grubx64.efi

sudo vim /usr/lib/os-probes/mounted/efi/20microsoft

# and changed bootmgfw.efi to bootmgfw.efi.backup

update-grub

I don't know if any of this has a bearing on the shutdown trouble.

EDIT: Come to think of it, the reboot from the Xubuntu installation (when I was booted through a USB drive) didn't work either.

What I've tried so far to get it to shut down:

• acpi=off → no difference


• acpi=force → no difference


• install proprietary Nvidia drivers → that just made X not start with the message "bbswitch: No discrete VGA device found"


• various variations on sudo poweroff, sudo shutdown now, sudo shutdown -h now etc.

Also, if I reboot instead of shutdown, I get this psychedelic lightshow on my monitor and have to long-click the power button to turn it off:

If it's helpful, here's a journalctl --all output right after booting up and perhaps even better: journalctl -b -1 (journal from bootup to shutdown).

Also, perhaps related, I notice now that pressing the power button while logged in to XFCE turns the computer right off, even though I have XFCE power settings to "Ask when power button pressed" and "Do nothing" on any other buttons.

My /etc/systemd/logind.conf has no uncommented lines apart from the [Login] header.

There is a /usr/sbin/acpid process running as root.

EDIT: More revelations: Ctrl+Alt+Delete actually reboot fine from GRUB.

EDIT2: I've filed a bug report since this doesn't seem fixable with the regular tricks.

EDIT3: Solved with acpi=noirq and kernel 4.4 and newer.

My best guess based on the info provided is a buggy UEFI BIOS. digging through the kernel bugs for Haswell I found a possible workaround. Try using xhci_hcd.quirks=262144 as a boot option or Disabling xhci in the UEFI.

The only other options I can think of are as follows:

A) Wait and hope that either the kernel development team or Lenovo comes up with an update that resolves the problem.

B) Contact Lenovo Support and push for a BIOS update that resolves the problem or encourage others with the same problem to subscribe to your bug report. This may or may not be any more effective than A.

C) Modify the BIOS or the kernel yourself until you reach the desired result (Not for the faint of heart). I'm not recommending this course of action, only including it for completeness. Modifying the BIOS can easily leave you with an unbootable system with a voided warranty. You should also read carefully the reasons for and against compiling your own kernel in the aforementioned linked document.

Source: https://bugzilla.kernel.org/show_bug.cgi?id=66171#c118

Try adding

acpi=noirq

to the kernel boot parameters. This lets it poweroff on shutdown/restart (tested with kernels 4.4 and 4.7rc5).

It seems to suspend too, but unfortunately does not resume from suspend on pressing the power button.

This has worked fine for over three months now on the A740, so I'm calling this solved.

After ferreting through the system files I saw a few warning about the BIOS. I checked Intel's website and there was an upgrade available that seemed to solve an issue of overlapping memory addresses. Not obviously the same but my logs indicated that various sectors of my BIOS were returning unexpected values, which did not prevent the kernel from starting but obviously was not good. The issue was not apparent until the kernel stopped using upstart and started using systemd.

I downloaded the updated BIOS and applied it and now my system turns off as expected.

What cat /etc/default/halt says? Try halt -p.

You can also edit /etc/init.d/halt and remove this lines:

if [ "$INIT_HALT" = "HALT" ]

then

  poweroff=""

fi

below

poweroff="-p"