Xorg High CPU consumtion with Intel Sky Lake Integrated Graphic (SOLVED)

[renaudmuller]

Hello everyone

I have experienced some trouble with Xorg and my new laptop ( Acer Aspire S ). The GPU is an Intel Sky Lake Integrated  HD Graphics 520 and I am running Siduction Paint It Black with KDE.

Symptoms : Some actions like selecting files in dolphin would cause Xorg to consume 100 % CPU on one core. Effects are then glitchy. This makes it almost impossible to use dolphin correctly. I also noticed that Xorg was consuming 15% CPU without doing anything.

After doing some research and trying to profile dolphin with valgrind, I found a working (for me  ) solution : Switch from DRI 2 to DRI 3 (http://www.phoronix.com/scan.php?page=article&item=intel-skylake-dri3&num=1)

for that, create a file /usr/share/X11/xorg.conf.d/20-intel.conf with following contents :

Code Select Expand

Section "Device"
    Identifier "Intel Graphics"
    Driver "intel"
    Option "AccelMethod" "usa"
    Option "DRI" "3"
EndSection


If you're experiencing that kind of problems, try it it did help me a lot.

[Lanzi]

I also use skylake and integrated graphics and I noticed plasma using about 8-10% of CPU-usage. Its not so disturbing, but selecting and copying files (in Krusader) makes my Fan instantaneously hearable.

[devil]

renaudmuller,


could you please paste the output of

Code Select Expand

apt policy xserver-xorg-video-intel


[musca]

Hello,
there is a typo, please  s/usa/uxa/

Option "AccelMethod" "uxa"

Universal Xcelleration Architecture (UXA) is the predecessor of Sandybridge New Accelleration (SNA, the default)

greetings
musca

[renaudmuller]

Hello,
thanks for replying

devil, apt policy xserver-xorg-video-intel :

Code Select Expand


xserver-xorg-video-intel:
  Installé : 2:2.99.917+git20160706-1
  Candidat : 2:2.99.917+git20160706-1
Table de version :
*** 2:2.99.917+git20160706-1 500
        500 http://httpredir.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status

musca, thanks for that, i fixed the typo.