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Hi,
My new work laptop shows some graphical issues, both in X and TTYs.
Most of the time, the screen looks as expected, but every few seconds, one frame is ill: the 2 or 3 cm of the top of the screen are repeated lower.
Here is a video of the problem in X, and a photo of another artifact in a TTY.
The issue disappears if I set a lower resolution, or if I plug an ethernet cable whose other end is connected to a powered device, or if I play a video (even if it is not shown, but it must be playing).
It does not appears on UEFI shells, BIOS and in the Debian Installer, but I am not sure about the resolution used in those modes.
It occurs really more often if I use the mouse or the keyboard.
The CPU is an i7-6600U and there is no additional GPU.
dmesg shows :
[ 12.164190] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 20.962573] mei_wdt mei::05b79a6f-4628-4d7f-899d-a91514cb32ab:02: Could not register event ret=-22
[ 20.965527] mei_wdt: probe of mei::05b79a6f-4628-4d7f-899d-a91514cb32ab:02 failed with error -22
Removing the package xf86-video-intel does not change anything, as most of things that appears on https://wiki.archlinux.org/index.php/Intel_graphics
The microcode does not seems to have any update:
[ 4.159041] microcode: CPU0 sig=0x406e3, pf=0x80, revision=0x94
[ 4.159060] microcode: CPU1 sig=0x406e3, pf=0x80, revision=0x94
[ 4.159094] microcode: CPU2 sig=0x406e3, pf=0x80, revision=0x94
[ 4.159130] microcode: CPU3 sig=0x406e3, pf=0x80, revision=0x94
[ 4.159285] microcode: Microcode Update Driver: v2.01 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
Does anyone have any clue about this ?
Last edited by Nim65s (2016-07-14 15:34:59)
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Driver "modesetting"
Fixed all issues under X, not on TTYs, but it doesn't really matter.
Maybe I should have posted that on "Kernel & Hardware"…
Last edited by Nim65s (2016-07-14 15:35:15)
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It worked for a day or two, then artifacts shows up again.
This time, adding
intel_idle.max_cstate=1
fixed everything.
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