On Fri, Feb 22, 2013 at 08:36:57AM +0000, Chris Wilson wrote: > 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. Yeah, it's a bit unsatisfactory since it seems to work on a lot of machines. Dunno what exactly is going on here on the oddball ones. > Acked-by: Chris Wilson <chris at chris-wilson.co.uk> > Cc: stable at vger.kernel.org.kernel.org # for 8ec22b21 Patch merged. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
