After a suspend/resume cycle, screen of Dell XPS 9350 becomes garbled (last tested with 4.11-rc8, linux mint/ubuntu-based) -- first few lines are correct, the rest being more-or-less static random white lines. This state is preserved across reboots, sometimes affecting POST screen. A known remedy is to connect USB-C HDMI adapter and enter/leave dual-screen mode, which sometimes tends to make the screen working again.
Created attachment 131932 [details] xorg output of the affected laptop
Created attachment 131933 [details] lspci output on the affected laptop
Created attachment 131934 [details] lshw on the affected laptop
Good afternoon, could you please add the parameter drm.debug=0xe in your grub, then remove the kern.log and boot again to get a clean kern.log for the bug and attach it together with a dmesg log? Once you provide more information, please change the tag from "NEEDINFO" o "REOPEN". Thank you.
Dropping priority since it seems hard to replicate. Hello Milan, Any update with latest kernel versions and/or drm-tip?? Thank you. https://www.kernel.org/ https://cgit.freedesktop.org/drm-tip
Apologies, I did not have much time to look into it, as the affected laptop is now few thoudsands kilometres from me. Will try get results with the supplied debug info as soon as possible.
(In reply to milan.plzik from comment #6) > Apologies, I did not have much time to look into it, as the affected laptop > is now few thoudsands kilometres from me. Will try get results with the > supplied debug info as soon as possible. Sorry for pestering, just asking if there is any news on this case. Thanks.
Hi; no worries, you're asking at the right time. The laptop got its motherboard replaced and from the first feelings it could have had solved the issue. Let's close this and if the issues re-appear, there's always an option to re-open or file a new bug. Thanks a lot for patience (and apologies for lengthy delays).
(In reply to milan.plzik from comment #8) > Hi; no worries, you're asking at the right time. The laptop got its > motherboard replaced and from the first feelings it could have had solved > the issue. Let's close this and if the issues re-appear, there's always an > option to re-open or file a new bug. Thanks a lot for patience (and > apologies for lengthy delays). Thank you very much for the update, reporters feedback is always appreciated to not let this kind of cases in the uncertainty. Closing the bug then, if problem appear again please file a new bug.
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