Since I have upgraded to linux-image-5.18.0-0.bpo.1-amd64 kernel I see that there are some ACPI errors reported by journalctl at boot time: # journalctl -r --system -p 3 --grep ACPI jun 29 06:43:35 hostname kernel: ACPI Error: Aborting method \_SB.WMID.WMAA due to previous error (AE_AML_BUFFER_LIMIT) (20211217/psparse-529) jun 29 06:43:35 hostname kernel: ACPI Error: Aborting method \HWMC due to previous error (AE_AML_BUFFER_LIMIT) (20211217/psparse-529) jun 29 06:43:35 hostname kernel: ACPI BIOS Error (bug): AE_AML_BUFFER_LIMIT, Field [D008] at bit offset/length 128/8 exceeds size of target Buffer (128 bits) (20211217/dsopcode-198) This is repeated 7 times during startup. It seems that this has been reported in the kernel: https://bugzilla.kernel.org/show_bug.cgi?id=201981 And it is suggested there that distributions include the following patches: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dc6a6ab58379f25bf991d8e4a13b001ed806e881 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=65f936f3535950d2643eac5bf34a735a0e428cdd I am not sure whether it is related, but also since the kernel upgrade I can see that my laptop fan is spinning more often than before. The first commit mentions something about broken power profiles, so maybe that's what causes the laptop to heat more often. It would be great if those patches are included in the 5.18 kernel shipped in bullseye backported kernel (and eventually in the upcoming bookworm)
Control: fixed -1 linux/5.18.5-1 Those patches are included upstream in v5.18.4, so marking it fixed with the first upload with those patches to the Debian archives. Not sure if that fully resolves the issue. If it does, please report so so we can close this bug
# close it for now, reporter can reopen in case not fully fixed close 1014107 5.18.5-1 thanks
Thank you for your answer. Is there a way to install that version 5.18.5-1 in bullseye?