Ubuntu
xserver-xorg-video-intel package

  1. Bug #256142
  2. Comment #87

Comment 87 for bug 256142

Revision history for this message
In , Ross Burton (ross) wrote :

- I don't get jittering with FBC disabled. I do get occasional screen blanking still.
- I only see jittering on VGA output to a LCD panel, not LVDS
- When I see jittering the LVDS is disabled, so there is only one output

I just noticed that my previous xorg log after a screen black/reboot contains this:

(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): PRB0_HEAD (0xb0613474) and PRB0_TAIL (0x000135c8) indicate ring buffer not flushed
(WW) intel(0): Existing errors found in hardware state.

That said, I'll update to git drivers shortly.