Bug#813310: More information

[Ungoliant <ungoliant@gmail.com>]

Hello,

A bit more of information:

- The issue happens using X or in a plain terminal, although in the terminal the situation is worse, the image dissapears more frequently.

- The issue is still happening  with SID's kernel 4.4

- I observe once in a while the following messages at the bottom of my dmesg:

[   23.189247] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[   23.242982] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder B
[   23.243002] [drm:cpt_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun

Best regards.