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Old 06-07-2018, 05:41 AM   #1
RacerBG
LQ Newbie
 
Registered: Jun 2015
Location: Bulgaria
Distribution: Arch Linux, Debian Jessie
Posts: 26

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Exclamation Debian Stretch - [i915] CPU Pipe A FIFO underrun ERROR


Good day to all!

Yesterday I installed Debian Stretch on Acer Aspire 5738Z. I have a few glitches with the screen (maybe related to the graphics driver) but by running "dmesg" the only error is:

Code:
[   47.392154] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
UPDATE 1: Looks like the problem is caused by this (however I already installed firmware-linux and I'm using everything possible from the Stretch backports):

Code:
W: Possible missing firmware /lib/firmware/i915/skl_dmc_ver1_27.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_04.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_39.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver9_29.bin for module i915
W: Possible missing firmware /lib/firmware/i915/skl_guc_ver9_33.bin for module i915
UPDATE 2: The problem disappeared after a kernel upgrade from Stretch backports (4.9 -> 4.16).

Have a nice day everyone!

Last edited by RacerBG; 06-07-2018 at 08:30 AM.
 
  


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