On Sat, Mar 08, 2025 at 09:05:50AM GMT, Marcus Glocker wrote: > On Sun, Mar 02, 2025 at 08:08:28PM GMT, Marcus Glocker wrote: > > > On Sun, Mar 02, 2025 at 02:58:20PM GMT, Jonathan Gray wrote: > > > > > On Sat, Mar 01, 2025 at 06:43:17PM +0100, Marcus Glocker wrote: > > > > >Synopsis: ThinkPad X1 screen turns occasionally black > > > > >Category: video inteldrm > > > > >Environment: > > > > System : OpenBSD 7.6 > > > > Details : OpenBSD 7.6-current (GENERIC.MP) #14: Sat Mar 1 > > > > 14:53:36 CET 2025 > > > > > > > > ha...@x1.nazgul.ch:/sys/arch/amd64/compile/GENERIC.MP > > > > > > > > Architecture: OpenBSD.amd64 > > > > Machine : amd64 > > > > >Description: > > > > In X11, the screen of my ThinkPad X1 will occasionally turn > > > > black. > > > > The only way to recover, is to switch to console, and back to > > > > X11. > > > > After that, follwing lines are printed on the console: > > > > > > > > drm_gem_plane_helper_prepare_fb: explicit fence not handled > > > > drm_gem_plane_helper_prepare_fb: explicit fence not handled > > > > > > what are you running in X when this happens? > > > > Basically not much. I run WindowMaker with some docker apps, two > > xterms, and xconsole. The issue so far appeared when the machine > > was idle. First I thought the issue is triggered by the hardware > > screen saver, but that got activated a few times today, and the issue > > didn't re-appear yet. > > > > I have currently no idea how to trigger the issue, since it appears > > very intermittently. For example, today the machine was used the > > entire day, with some long idle periods in between, and the issue > > didn't re-appear yet. > > > > > try this: > > > > Thanks for the diff. But based on my above explanation it's pretty > > hard to find out whether the diff makes a difference. Maybe I can find > > out a pattern over time. > > Just for the notes, since it just happened again; The system was idle > when it happened for like 2h. Then pressed a key to remove the hardware > screen safer, screen remained black. Switched to console 1, there was > no new message there. Switched back to X on F5, console message > appeared: > > drm_gem_plane_helper_prepare_fb: explicit fence not handled > drm_gem_plane_helper_prepare_fb: explicit fence not handled > > Maybe I just apply your diff, and see if still happens within the next > few days/weeks.
Got it again today morning, just after a few minutes X idle. I'm running with your diff now. Also added two printfs in the 'if' branch, to see when which one gets entered.
