Yves-Alexis Perez <cor...@debian.org> writes: > Actually it seems to me that the bug is a bad interaction with light- > locker/lightdm locking system (which relies on vt switch) and the Intel > driver. It only seems to happens on this driver, and I think it's also > been reproduced just by doing vt-switches (but can't remember where it > was reported).
Ah, good call. I was also seeing other problems with the Intel driver in combination with light-locker where the monitor resolution would be set to some incorrect value after restore from lock. This would come with kernel errors like: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun and then lots and lots of: [drm:intel_dp_start_link_train [i915]] *ERROR* Timed out waiting for DP idle patterns -- Russ Allbery (r...@debian.org) <http://www.eyrie.org/~eagle/>
