Created attachment 120534 [details]
Kernel Log of failed kms on one display (drm.debug=0x0e)
i am testing kernel 4.4 RC cause of the problems in Bug 89055. while it looked very good yesterday today on freshly turning on the computer i noticed a big regression.
I have 2 displays with different resolution one Full HD display connected via HDMI, and one 1680x1050 which is connected via DVI.
And with kernel 4.4 on a freshly tuned on system the 1680x1050 Display turns off itself with an out of range error. i tried it a few times, and it was completely reproducable as long as the system was freshly turned on, when i boot once with kernel 4.3 and then reboot with 4.4 then everyting works.
on the last bug someone told me to enable drm.debug=0x0e so i attach a log with that option turned on, hope it helps.
any updates on this? it is still happening with the newest kernel from opensuse kernel-next repo, and will be a major problem on 4.4 release.
We seem to have completely neglected this bug. Apologies.
Does the problem persist with latest kernels and userspace?
(In reply to Jani Nikula from comment #2)
> We seem to have completely neglected this bug. Apologies.
> Does the problem persist with latest kernels and userspace?
Timeout, assuming that this is fixed by now. If this is not the case, please re-test with latest kernel to see if this issue is still occurring since there were improvements pushed in kernel that will benefit to your system.