The i915 is an uma architecture, i seen this bug for now only with update-manager when the progress indicator is running. Maybe the called programm draws to much or the x server did not claim more shared memory to allow this drawing. Switching to exa and give fixed 128mb memory can fix this. But unity is going very sluggish then.
The i915 is an uma architecture, i seen this bug for now only with update-manager when the progress indicator is running. Maybe the called programm draws to much or the x server did not claim more shared memory to allow this drawing. Switching to exa and give fixed 128mb memory can fix this. But unity is going very sluggish then.