Ubuntu
linux package

  1. Bug #1550779
  2. Comment #32

Comment 32 for bug 1550779

Revision history for this message
Anthony Roach (anthony.roach) wrote : Re: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches

I was having this same problem running kernel 4.4.0-28-generic in 16.04. Upgrading to kernel 4.6.3-040603-generic seems to have resolved the problems (or at least made it rare enough that I don't notice it anymore). On 4.4 the graphic errors were particular common (every few seconds) when using gotomeeting or other video chat web sites that use WebRTC via Google Chrome (with Chrome video acceleration turned off). The screen going blank for 1 second problem seemed particularly common when alt-tabbing between Gnome Terminal instances. The "*ERROR* CPU pipe A FIFO underrun" in dmesg has also stopped.