Comment 11 for bug 987498

Similar problem on Lenovo T420.

Sometimes switching to console and back to X seems to wakeup everything.
Normally the mouse can still move on the screen, just nothing happening.

Looking through my logs i found a couple of error messages in syslog.

> Jan 7 21:06:29 t420 kernel: [ 225.148702] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung

maybe someone else can confirm if they have seen the same, also planning to disable Bluetooth as this has given me problems before.