On Tue, 11 May 2021, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote: > On Tue, May 11, 2021 at 2:06 AM Albert Astals Cid <aacid@xxxxxxx> wrote: >> >> Yes, I also have the same. >> >> I git bisected that and found this to be the cause, i started a new email thread because i couldn't find this email ^_^ > > Should be fixed by > https://cgit.freedesktop.org/drm-tip/commit/?id=acca7762eb71bc05a8f28d29320d193150051f79 I've picked up acca7762eb71 ("drm/i915/dp: Use slow and wide link training for everything") to drm-intel-fixes, and it should find itself in v5.13-rc2 and subsequently v5.12 stable in the coming weeks. BR, Jani. > > Kai-Heng > >> >> Cheers, >> Albert >> >> El dilluns, 10 de maig de 2021, a les 10:07:33 (CEST), Emanuele Panigati va escriure: >> > Hi, >> > on my Dell XPS 15 9570 laptop I might have a regression with Arch Linux >> > (kernel 5.12.2-arch1-1: during boot the laptop monitor goes black while >> > external monitors still works... >> > >> > >> > Panich >> > >> > >> > Il giorno lun 11 gen 2021 alle ore 19:28 Ville Syrjälä < >> > ville.syrjala@xxxxxxxxxxxxxxx> ha scritto: >> > >> > > On Thu, Jan 07, 2021 at 08:20:25PM +0200, Ville Syrjala wrote: >> > > > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> >> > > > >> > > > Some new eDP panels don't like to operate at the max parameters, and >> > > > instead we need to go for an optimal confiugration. That unfortunately >> > > > doesn't work with older eDP panels which are generally only guaranteed >> > > > to work at the max parameters. >> > > > >> > > > To solve these two conflicting requirements let's start with the optimal >> > > > setup, and if that fails we start again with the max parameters. The >> > > > downside is probably an extra modeset when we switch strategies but >> > > > I don't see a good way to avoid that. >> > > > >> > > > For a bit of history we first tried to go for the fast+narrow in >> > > > commit 7769db588384 ("drm/i915/dp: optimize eDP 1.4+ link config >> > > > fast and narrow"). but that had to be reverted due to regression >> > > > on older panels in commit f11cb1c19ad0 ("drm/i915/dp: revert back >> > > > to max link rate and lane count on eDP"). So now we try to get >> > > > the best of both worlds by using both strategies. >> > > >> > > Pushed. Fingers crossed for no regressions... >> > > >> > > -- >> > > Ville Syrjälä >> > > Intel >> > > >> > >> >> >> >> -- Jani Nikula, Intel Open Source Graphics Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
