On Tue, Oct 04, 2022 at 03:35:44PM +0300, Ville Syrjälä wrote: > On Mon, Oct 03, 2022 at 08:28:50PM +0200, Thorsten Leemhuis wrote: > > > > > > On 03.10.22 19:48, Ville Syrjälä wrote: > > > On Mon, Oct 03, 2022 at 08:45:18PM +0300, Ville Syrjälä wrote: > > >> On Sat, Oct 01, 2022 at 12:07:39PM +0200, Thorsten Leemhuis wrote: > > >>> On 30.09.22 14:26, Jerry Ling wrote: > > >>>> > > >>>> looks like someone has done it: > > >>>> https://bbs.archlinux.org/viewtopic.php?pid=2059823#p2059823 > > >>>> > > >>>> and the bisect points to: > > >>>> > > >>>> |# first bad commit: [fc6aff984b1c63d6b9e54f5eff9cc5ac5840bc8c] > > >>>> drm/i915/bios: Split VBT data into per-panel vs. global parts Best, Jerry | > > >>> > > >>> FWIW, that's 3cf050762534 in mainline. Adding Ville, its author to the > > >>> list of recipients. > > >> > > >> I definitely had no plans to backport any of that stuff, > > >> but I guess the automagics did it anyway. > > >> > > >> Looks like stable is at least missing this pile of stuff: > > >> 50759c13735d drm/i915/pps: Keep VDD enabled during eDP probe > > >> 67090801489d drm/i915/pps: Reinit PPS delays after VBT has been fully parsed > > >> 8e75e8f573e1 drm/i915/pps: Split PPS init+sanitize in two > > >> 586294c3c186 drm/i915/pps: Stash away original BIOS programmed PPS delays > > >> 89fcdf430599 drm/i915/pps: Don't apply quirks/etc. to the VBT PPS delays if they haven't been initialized > > >> 60b02a09598f drm/i915/pps: Introduce pps_delays_valid() > > >> > > >> But dunno if even that is enough. > > > > If you need testers: David (now CCed) apparently has a affected machine > > and offered to test patches in a different subthread of this thread. > > > > >> This bug report is probably the same thing: > > >> https://gitlab.freedesktop.org/drm/intel/-/issues/7013 > > > > Sounds like it. > > > > > Also cc intel-gfx... > > > > Ahh, sorry, should have done that when I CCed you. > > After looking at some logs we do end up with potentially bogus > panel power sequencing delays, which may harm the LCD panel. > > > Greg, I recommend immediate revert of this stuff, and new stable > release ASAP. Plus a recommendation that no one using laptops > with Intel GPUs run 5.19.12. Ok, will do, I'll go do that right now, thanks and sorry for the problems. greg k-h
