Laptop (T490) does not reliably detect change from AC to BAT

I’ll do it - please wait for 5.9.8-2 and 5.10.rc4.d1117.g0fa8ee0-1 in unstable

The builds take a little bit :wink:

2 Likes

Yeah - good news; I tried it now, if I boot with anything but 5.10 rc4 it’s not working; I need to reset (hard reset via button) when I return to 5.10 rc4 to make it work; There must be some wired stuff going on between the firmware and kernels that are not patched as I get ACPI errors from 5.10 rc4 kernel if I boot it after running 5.9 or 5.8 or 5.4 without hard resetting in between.
But if booted 5.10 rc4 only after hard reset everything works fine

ACPI still throws errors:

[  422.443765] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.RP09.PEGP.NVDN], AE_NOT_FOUND (20200925/psargs-330)
[  422.443802] ACPI Error: Aborting method \_SB.PCI0.LPCB.EC._Q27 due to previous error (AE_NOT_FOUND) (20200925/psparse-529)
[  424.026862] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.RP09.PEGP.NVDN], AE_NOT_FOUND (20200925/psargs-330)
[  424.026890] ACPI Error: Aborting method \_SB.PCI0.LPCB.EC._Q26 due to previous error (AE_NOT_FOUND) (20200925/psparse-529)

removing and replugging power - but after all in general it works now.

Great! Have you tried to update to linux59-5.9.8-2 (today’s one)? You should have it working properly after that. I hope it will at least. This will also prove that the only patches you needed were Ben’s ones, and not the other one which helped in my situation.

Typing this running todays inux59-5.9.8-2 and yes its working with this one as well now!

1 Like

This topic was automatically closed 15 days after the last reply. New replies are no longer allowed.