As an update, it's now been roughly a week with no freezes or crashes for me. I have not changed my usage pattern: same dock, same external display, devices, etc., and same applications used. I did change one thing however. When I was switching again to the linux-image- oem-20.04-edge I decided to reinstall it just to be sure. I spotted a post-install warning I didn't notice previously:
update-initramfs: Generating /boot/initrd.img-5.10.0-1016-oem W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915 W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915 I indeed did not have tgl_huc_7.5.0.bin on my machine, despite having linux-firmware installed. It did not seem available in any installable package, so I decided to grab this one file from a newer debian package (it was added upstream a few months back) and reinstalled again with it in place. There was no update-initramfs warning this time, and I haven't had a freeze since. It could be a coincidence of course, but maybe the kernel/firmware relationship is related. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1919425 Title: System freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.6/+bug/1919425/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs