I have seen it a few times on mine too.
Dell M1330 with Intel graphics.
I'm considering to un-tick "Sync To VBlank" as mentioned above, as I have had issues with clutterflow before.
The solution for that is to add
export CLUTTER_VBLANK=none
to /etc/environment
I have seen it a few times on mine too.
Dell M1330 with Intel graphics.
I'm considering to un-tick "Sync To VBlank" as mentioned above, as I have had issues with clutterflow before.
The solution for that is to add
export CLUTTER_VBLANK=none
to /etc/environment