Tags: fixed-upstream After some investigation, I can confirm that this is a bug in the upstream release (not Debian-specific) and has been fixed by upstream in the following commit: http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=2026c57cf0a352d9e6f9d208cfb7d4d550614477 Applying that patch to the Debian package source fixes the problem.