Ubuntu
linux package

  1. Bug #1550779
  2. Comment #30

Comment 30 for bug 1550779

Revision history for this message
elleP (pelle-quicknet) wrote : Re: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches

While much less frequent than when using a 4.4 kernel, the problem still occurs for me when using a 4.6 kernel:

uname -a
4.6.0-040600-generic #201606030904 SMP Fri Jun 3 13:06:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

dmesg
[31606.245708] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[31606.245846] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[40612.123848] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[40612.123987] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

Ubuntu 16.04 LTS
Intel(R) Core(TM) i5 CPU M 520
Thinkpad T410