Public bug reported:
System-Information:
Description: Ubuntu 18.04.4 LTS
Release: 18.04
######################################
Working packages:
- Kernel 5.3.0.61.114
- linux-firmware 1.173.18
Problem occurs when upgrading (anyone of) these packages
- Kernel 5.3.0-62.56
- linux-firmware 1.173.19
I use an Acer Aspire E5-771G Notebook with a fresh installation of Ubuntu 18.04.
Till the last upgrade everything works as expected.
The last upgrade brings two new kernel versions (as mentioned above).
Now the system stucks at the very end of the power down sequence.
Even SysReq-O will not work (only SysReq-B will work).
Because I use Systemback, I time shift to the previous system and then install
package by package to see what will bring in the problem.
If I install any of the mentioned kernel updates the problem will show up.
I had ask the above question on "askubuntu.com".
I was directed to upgrade the BIOS, But even after doing so the problem still
persist.
I am not sure if I do it right (APT pinning).
I currently create a file /etc/apt/prefereces.d/kernel.
I add an entry for every of the following packages to block the version
mentioned above (Pin: version: <see above> Pin-Priority: -1):
linux-generic-hwe-18.04
linux-headers-generic-hwe-18.04
linux-image-generic-hwe-18.04
linux-modules-nvidia-440-generic-hwe-18.04
linux-firmware
After doing so "apt list --upgradeable" will not list the packages in
question and the PC will power down normally (and SysReq-O WILL work).
In the meanwhile there are newer versions of the kernel online, so the above
mentioned pinning will allow the newer kernels to get installed and the problem
will show up again.
So I block these versions too.
BTW: Due to the stuck I am able to see some other error messages that are not
reported in the journal. The very last 3-5 lines show:
shutdown [1]: Failed to wait for process: Protocol error
These lines are present although in the working kernels, but hard to see,
because the system powers down some ms after these lines are displayed!
This problem seams to be solved more than one year ago in the upstream kernel!
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1888570
Title:
poweroff not working after apt upgrade
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