Control: reassign -1 src:linux 5.10.70-1 Greetings, Attempting to triage this bug appropriately… Isabelle Stévant, on 2021-11-06: > On boot, the grub resolution is fine, then while booting, on > 90% of the case, the screen resolution is set at 1280*800 and > once on Gnome I cannot change to a higher resolution, even > with xrandr: […] > Here are the relevant lines regarding the error: > > [ 3.883899] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] Same > voltage tried 5 times > [ 3.883953] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] > [CONNECTOR:95:DP-1] Link Training failed at link rate = 162000, lane count = 1 > [ 3.883955] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful Thank you Isabelle for your report! If I read correctly what I believe is your forum post [1], then it seems you have managed to get your machine working appropriately on Ubuntu 21.10, possibly using a Linux kernel addressing the Ubuntu issue #1939297 [2]. Per chance, in case you wish to retry Debian 11, does the backport of Linux image 5.14, or later, show the same symptoms? [1]: https://forums.debian.net/viewtopic.php?t=150696 [2]: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.11/+bug/1939297 The seemingly related Archlinux bug #70135 [3] points to a bunch of Linux 5.12~rc5 commits which haven't made it to an LTS kernel yet [4, 5, 6, 7, 8, 9, 10] and a patch summarizing application against the then stable kernel Linux 5.11.1 [11]. [3]: https://bugs.archlinux.org/task/70135 [4]: https://lore.kernel.org/stable/1616854810240220%40kroah.com/ [5]: https://lore.kernel.org/stable/1616854805147121%40kroah.com/ [6]: https://lore.kernel.org/stable/161685477512034%40kroah.com/ [7]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=3b7bbb3619d2cc92f04ba10ad27d3b616aabf175 [8]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=7dffbdedb96a076843719d4ea5b2cd666481c416 [9]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ab03631087f5c296030dd86265ea02dcdacc6802 [10]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=3f3a9bc1f6df5a1a9ec39e3a5bee420328811be4 [11]: https://bugs.archlinux.org/task/70135?getfile=19966 > The second problem I have is that after suspend or hibernate, the display does > not come back but the system is fine (I can log on the machine by ssh). The > monitors says it does not receive any signal, and when I check with xrandr the > display is labeled as disconnected. This happens independently of the > resolution. I catch the following dmesg typing blindly on TTY mode. Hopefully the second symptom is related to same cause. In hope this helps, -- Étienne Mollier <emollier@emlwks999.eu> Fingerprint: 8f91 b227 c7d6 f2b1 948c 8236 793c f67e 8f0d 11da Sent from /dev/pts/2, please excuse my verbosity.
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