Using any of the 4.0 kernels I get framebuffer corruption when switching tty or quitting X.
my dmesg output gives:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Some people running 3.19 are getting corruption when running multiple displays, with 'pipe B FIFO underrun'.
What does the corruption look like? Can you attach a picture? Also, I assume you didn't get this corruption on the last kernel, would it be possible to bisect to the failing commit?
Please attach your dmesg so we know what hardware you have? Preferably with drm.debug=0x6 set on the kernel command line.
Created attachment 114808 [details]
dmesg output after framebuffer corruption occurs.
The corruption makes the writing 'spin' across the screen, from left to right.
Sometimes I dont seem to be able to switch tty.
Its hard to get a pic since I cant screen cap.
If you guys dont mind a phone picture I can upload that. I have attacked a .txt with my dmesg output plus the kernel params set.
I cant do a bisect today, as I would have to learn to do it, I simply don't have time to do it today.
When speaking to some people in IRC they say they get some corruption on their second display on kernel 3.19.
*** This bug has been marked as a duplicate of bug 85583 ***
Closing as duplicate of closed+fixed.