Please try kernel in http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/current/
If the issue is still there, file an upstream bug at https://bugzilla.freedesktop.org
Please try kernel in http:// kernel. ubuntu. com/~kernel- ppa/mainline/ drm-intel- nightly/ current/
If the issue is still there, file an upstream bug at https:/ /bugzilla. freedesktop. org