Control: tag -1 help Hi, On Wednesday, 18 January 2023 09:22:03 CET Didier 'OdyX' Raboud wrote: > Control: retitle -1 Thinkpad: amd_pmc module required for on 6.1 for correct suspend > Le mardi, 17 janvier 2023, 22.53:54 h CET Didier 'OdyX' Raboud a écrit : > > Le mardi, 17 janvier 2023, 15.32:37 h CET Diederik de Haas a écrit : > > > On Monday, 16 January 2023 22:33:05 CET Didier 'OdyX' Raboud wrote: > > > > This is on 6.1.4-1a~test, patched against the "2nd DisplayPort doesn't > > > > light up", so feel free to close the bug; I'll test if I get the same > > > > symptoms on an unpatched kernel anyway :-) > > > > > > If that issue doesn't occur with the unpatched kernel, could you add > > > your finding to that upstream/forwarded issue? > > ... > > > > All three 6.1 kernels (whether patched or not) don't bring the laptop to > > the suspended state (power led 'breathing', fans off), but it's kept in > > an "on" state (power led on, fans on), from which I found that I *can* > > wake the laptop up by short-pressing the power button; the screens gets > > back to life and show my lockscreen. But from there, I can't move the > > mouse nor do anything else. Alt-SysRq-r + ctrl-alt-f2 give me a tty, but > > any comeback to tty1 only blank (not even a blank screen, just a freeze). > > > > This seems to point to a quite severe regression in amdgpu or other amd- > > related code; I can't suspend-and-resume the laptop anymore on any 6.1 > > kernel, on battery, without anything attached to it. > > > > I'll forward the above findings to the bug you pointed to, hoping it could > > help upstream too! > > OK. I've gone and done this: > https://gitlab.freedesktop.org/drm/amd/-/issues/2171#note_1727281 Awesome, thanks. > It turns out to get suspend to work, the `amd_pmc` module needs to be > enabled (_AND_ the BIOS needs to have the "Sleep State" toggled to Windows > (from Linux). > > I _think_ Debian should make sure amd_pmc is loaded on (all?) modern AMD > laptops. I have no idea (yet) what the mechanism to make this happen is > though. Due to https://bugs.debian.org/992832 the AMD_PMC module got enabled and I and IIUC you too, verified that it is present in the kernel. I agree it should be auto-loaded, but I don't know why that didn't happen. Tagging this bug with 'help' to request the help from ppl who know more about this then I do. Cheers, Diederik
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