|Summary:||rotation causes undefined behavior after updating mesa (radeon, x11, kernel 4.10)|
|Status:||RESOLVED DUPLICATE||QA Contact:||mesa-dev|
|i915 platform:||i915 features:|
Description xaxazak 2017-02-27 05:17:20 UTC
Rotating one of my monitors makes it garbled and/or logs me out (causing endless login loop). Mesa 17.1 (padoka PPA). Linux Kernel 4.10. Xubuntu 16.10. (XFCE). Radeon RX 480. 2 monitors: A) Dell U2410 (1920x1080) via HDMI. B) QNIX QX2710LED (2560x1440) via DVI. Disabling #B doesn't help. Not sure if this is a Mesa bug, but it's my best guess. Note, this doesn't occur when using Unity, so it might be specific to X11? I wonder if the unusual combo of HDMI + DVI might also be important - I did find one related thread somewhere (lost it, sorry) mentioning they fixed rotation issues by using different ports (Unfortunately, the QNIX only has DVI). This has been bugging me for a while, but I always rotated the monitor before upgrading kernel/mesa etc so I didn't click that it was rotation until today. Unfortunately I can't get a screenshot as it's too unstable. If it displays anything before logging out it looks like strips of actual rotated desktop plus strips of unintelligible data.