https://bugzilla.suse.com/show_bug.cgi?id=1213380 https://bugzilla.suse.com/show_bug.cgi?id=1213380#c17 --- Comment #17 from Samuel Conway <samcon@protonmail.com> --- (In reply to Samuel Conway from comment #16)
(In reply to Takashi Iwai from comment #14)
So, now you could install the system with DP-DP? And on the running system, try to switch to DP-HDMI. Do you see the same problem? When you reconnect back to DP-DP, does it recover again?
If all yes, please try like the following: - Boot with DP-DP, go up to GUI desktop - Enable the debugging of drm, run below as root echo 0x1e > /sys/module/drm/parameters/debug - Re-connect to DP-HDMI, and you'll see a buggy screen - Re-connect back to DP-DP, screen recovered - Save the output "dmesg" command, and attach the output to Bugzilla
Did as as requested, had video output for both DP-DP and DP-HDMI. output of dmesg is attached.
I powered off device and took to room with projector, first booting with DP-DP monotor, successful video output, swapped to DP-HDMI for projector projector, but again no video output, just black screen. Rebooted again with DP-DP, still no output. Swapped again to DP-HDMI (still nothing) so I created a new dmesg export: dmesg-20230803-1 and attached it. Also swapped adapters since I have two, but no success. let me know if I can test anything else. regards -- You are receiving this mail because: You are on the CC list for the bug.