Ubuntu
gnome-shell package

  1. Bug #1690719
  2. Comment #69

Comment 69 for bug 1690719

Revision history for this message
In , Jeff Fortin Tam (kiddo) wrote :

I just discovered something that was not readily apparent to me before as a symptom of this bug: it is not just the mouse feeling laggy, but mouse movements actually *cause* frame drops in other applications.

For example, if I run Geeks3D's GPU test "furmark" (available from http://www.phoronix-test-suite.com/benchmark-files/GpuTest_Linux_x64_0.7.0.zip ) like this:

DISPLAY=:0 ./GpuTest /test=fur /fullscreen

...I get okay-ish performance if not touching anything, but whenever I move the mouse cursor over it, frame drops significantly. Demonstration of the issue: https://youtu.be/DUV0vRGFIBU

This was tested on a clean startup with no other applications running. This might be a useful test case for anyone coding towards a solution here.