modeset(0): failed to set mode: No such file or directory
Submitted by Kirill A. Shutemov
Assigned to Dhinakaran Pandiyan @dpandiya
Link to original bug (#109402)
Description
Created attachment 143174
Xorg.0.lo
System is Thinkpad T460p with external display attached over DisplayPort. Kernel is v5.0-rc2. Xorg is 1.20.3.
Xorg starts normally, but if external display gets through power cycle switching to console and back leads to Xorg crash with "modeset(0): failed to set mode: No such file or directory". See attached log.
The external display is Dell UP2414Q, which is 4k, but the bug can be reproduced with MST disabled too.
Attachment 143174, "Xorg.0.lo":
Xorg.0.log