Intel GMA and random slowdown

February 24th, 2015

Quite many people seem to have the same problem that I did: occasional jumpy mouse and random slowdown/freezes with and Intel GMA (or newer). Dunno if the problem has been fixed already, but here’s something worth trying if system updates don’t do the trick (run as root):

echo 0 >/sys/module/drm_kms_helper/parameters/poll

Worked for me and another friend. To make it permanent, add the line to for example /etc/rc.local. The bug has something to do with periodically checking for external displays, which seems to cause an irritating freeze ranging from a fraction of a second to even several seconds.

Filed under: linux

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