Ubuntu
linux package

  1. Bug #1550779
  2. Comment #77

Comment 77 for bug 1550779

Revision history for this message
Angelo Lisco (angystardust-gmail) wrote : Re: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches

Same issue here on a Lenovo T450s with a Intel HD Graphics 5500 (Broadwell GT2) GPU. It happens both with Ubuntu 16.04 and Fedora (26 and 27) so I suppose that's a weird bug in the intel driver.
It also happens sometimes without any external monitor when I leave my notebook powered up during the night: in the moring my gdm lock screen flickers and I'm unable to login into my session.
Has someone found a workaround or a fix?