I believe this is likely to be this upstream bug: https://bugs.freedesktop.org/show_bug.cgi?id=26980 - could you please attach dmesg after reproducing this bug? That should give us enough information to tell if they're the same bug.
I believe this is likely to be this upstream bug: https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 26980 - could you please attach dmesg after reproducing this bug? That should give us enough information to tell if they're the same bug.