| 2021-10-17 06:08:45 |
xiota |
description |
I'm using KDE Plasma on Ubuntu 21.10 with kernel 5.13.0-19. Recently, my laptop has been freezing upon unplugging the power cord. The sysrq keys do not work when this occurs.
When I switch kernels, the problem does not occur. The following kernels do not freeze when I unplug the power cable.
* kernel 5.14.12 from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.12/
* kernel 5.13.19 from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.13.19/
When I boot back into the 5.13.0-19 kernel, the problem recurs.
I had also tried changing various system settings, bios settings, and packages, none of which made any difference, aside from switching kernels. |
I'm using KDE Plasma on Ubuntu 21.10 with kernel 5.13.0-19. Recently, my laptop has been freezing upon unplugging the power cord. The sysrq keys do not work when this occurs.
Previously, the problem appeared to resolve when switching kernels. However, when I tried to obtain logs, the problem began to occur on all installed kernels (5.14.12, 5.13.19, and 5.13.18 from https://kernel.ubuntu.com/~kernel-ppa/mainline/).
Logs cannot be obtained because none appear to be saved to disk during the crash. (journalctl -k -b -1)
Since the problem appears kernel related, I tried removing potentially problematic kernel options from /etc/default/grub. After removing all acpi and i915 options (which I had enabled because they had previously been needed to make the backlight work and reduce gpu crashes), the problem again *appears* to have resolved with all of the aforementioned kernels. |
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