On Fri, Feb 22, 2013 at 12:53:04AM +0100, Daniel Vetter wrote: > This reverts > > commit 8ec22b214d76773c9d89f4040505ce10f677ed9a > Author: Chris Wilson <chris at chris-wilson.co.uk> > Date: Fri May 11 18:01:34 2012 +0100 > > drm/i915/hdmi: Query the live connector status bit for G4x > > and > > commit b0ea7d37a8f63eeec5ae80b4a6403cfba01da02f > Author: Damien Lespiau <damien.lespiau at intel.com> > Date: Thu Dec 13 16:09:00 2012 +0000 > > drm/i915/hdmi: Read the HPD status before trying to read the EDID > > They reliably cause HDMI to not be detected on some systems (like my > ivb or the bug reporters gm45). To fix up the very slow unplug issues > we might want to fire up a 2nd detect cycle a few hundred ms after > each hotplug. But for now at least make displays work again. > > I somewhat suspect that this is confined to HDMI connectors, since all > the machines I have with DP+ outputs work correctly. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=52361 > Cc: Damien Lespiau <damien.lespiau at intel.com> > Cc: Jani Nikula <jani.nikula at intel.com> > Cc: Chris Wilson <chris at chris-wilson.co.uk> > Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> I wish we had a solid explanation here, because the status bit sounds exactly what we need here. Reality is such a let down. Acked-by: Chris Wilson <chris at chris-wilson.co.uk> Cc: stable at vger.kernel.org.kernel.org # for 8ec22b21 -Chris -- Chris Wilson, Intel Open Source Technology Centre
