Comment 11 for bug 1501260

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Martin Pecka (peci1) wrote :

I'm also affected by this bug, when running both glxgears and Gazebo simulator (or, its graphical client using OpenGL).

Switching to a terminal (Ctrl+Alt+F1) and back unfreezes the screen for a while. The screen only looks frozen, but normally reacts to mouse and keyboard events. This only happens if the GL window is displayed on my primary display (which is handled by the intel integrated chip). The notebook has 2 video outputs and a discrete AMD graphics, and I think only one of the outputs is handled by the AMD card, so I think one of the outputs is handled by the intel card and does not get frozen.

Ubuntu 14.04.3 64bit.

I think that before upgrading from 14.04.2 to 14.04.3 this did not happen.