![]() You could get a lead by inspecting the contents of /var/log/unattended-upgrades. If this did not solve your issue, and the upgrade went without any errors or warnings, wee will try digging a bit more deep to see if we can find out what is causing the issue. But first of all, we will try a manual upgrade: sudo apt-get autoremove A temporary fix to this would be to disable automatic updates by updates, but we will keep it as a last resort. There have been several bug reports on this years ago, but they have not been resolved. You should also read carefully the reasons for and against compiling your own kernel in the aforementioned linked document.įrom your Kernel Logs (Screenshot) I have a hunch that unattended-upgrades might be the cause of your issue. Modifying the BIOS can easily leave you with an unbootable system with a voided warranty. I'm not recommending this course of action, only including it for completeness. This may or may not be any more effective than A.Ĭ) Modify the BIOS or the kernel yourself until you reach the desired result (Not for the faint of heart). The only other options I can think of are as follows:Ī) Wait and hope that either the kernel development team or Lenovo comes up with an update that resolves the problem.ī) 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. Try using xhci_hcd.quirks=262144 as a boot option or Disabling xhci in the UEFI. ![]() digging through the kernel bugs for Haswell I found a possible workaround. My best guess based on the info provided is a buggy UEFI BIOS. There is a /usr/sbin/acpid process running as root.ĮDIT: More revelations: Ctrl+Alt+Delete actually reboot fine from GRUB.ĮDIT2: I've filed a bug report since this doesn't seem fixable with the regular tricks.ĮDIT3: Solved with acpi=noirq and kernel 4.4 and newer. My /etc/systemd/nf has no uncommented lines apart from the header. 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).Īlso, 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. various variations on sudo poweroff, sudo shutdown now, sudo shutdown -h now etc.Īlso, 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:.install proprietary Nvidia drivers → that just made X not start with the message "bbswitch: No discrete VGA device found".What I've tried so far to get it to shut down: I don't know if any of this has a bearing on the shutdown trouble.ĮDIT: Come to think of it, the reboot from the Xubuntu installation (when I was booted through a USB drive) didn't work either. ![]() Sudo vim /usr/lib/os-probes/mounted/efi/20microsoft ![]() I tried bcdedit /set Ĭp /boot/efi/efi/ubuntu/grub圆4.efi /boot/efi/efi/boot/boot圆4.efiĬp /boot/efi/efi/ubuntu/grub圆4.efi /boot/efi/efi/microsoft/boot/bootmgfw.efiĬp /boot/efi/efi/ubuntu/grub圆4.efi /boot/efi/efi/microsoft/boot/grub圆4.efi ![]() Unfortunately, the UEFI BIOS didn't let me change boot order so that Ubuntu actually started as default. Before installing Xubuntu, I turned off Fastboot from Windows, then installed Xubuntu. I've kept the Windows 8.1 installation in case there's any future firmware. So I have to click the power button to actually turn it off. It's mostly working, except when I do a shutdown or reboot, it doesn't actually turn off the power after quitting everything: 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. ![]()
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