https://bugzilla.kernel.org/show_bug.cgi?id=211033 Jan Klos (honza.klos@xxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |honza.klos@xxxxxxxxx --- Comment #17 from Jan Klos (honza.klos@xxxxxxxxx) --- I don't think this is limited just to KVMs and such. On my Vega 64 + 5.11.3-arch1 (had the same problem with 5.11.2, 5.10 etc.), sometimes, when I return to PC after a while and my 2 monitors are sleeping, only one monitor wakes up, the other one remains in sleep mode. Dmesg shows this: [bře 6 14:22] [drm] perform_link_training_with_retries: Link training attempt 1 of 4 failed [bře 6 14:23] [drm] perform_link_training_with_retries: Link training attempt 2 of 4 failed [ +0,473352] [drm] perform_link_training_with_retries: Link training attempt 3 of 4 failed [ +0,437753] [drm] enabling link 0 failed: 15 [ +0,432276] [drm] perform_link_training_with_retries: Link training attempt 1 of 4 failed [ +0,405827] [drm] perform_link_training_with_retries: Link training attempt 2 of 4 failed [ +0,476172] [drm] perform_link_training_with_retries: Link training attempt 3 of 4 failed [ +0,415466] [drm] enabling link 1 failed: 15 Switching to terminal and waiting a sec or two makes both monitors work, switching back to X11 and everything is OK. It seems to me that there might be some kind of bug where if the first link training attempt fails, the subsequent ones ALWAYS fail as well, so there is actually only a single actual link training attempt that has a chance to succeed. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
