On Mon, Mar 18, 2013 at 11:05 AM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: > Hi Greg&all, > > So a recent stable backport to fix rc6 on ilk (which is disabled by > default and with dubious power savings at best, unlike rc6 on snb and > later) totally blew up all over the place: > https://bugzilla.kernel.org/show_bug.cgi?id=55291 > https://lkml.org/lkml/2013/3/14/540 This likely also is the culprit behind the ghost vga issues reported on gm45, e.g: https://bugzilla.redhat.com/show_bug.cgi?id=922304 Again, fixed in 3.9-rc kernels by commit 20afbda209d708be66944907966486d0c1331cb8 Author: Daniel Vetter <daniel.vetter at ffwll.ch> Date: Tue Dec 11 14:05:07 2012 +0100 drm/i915: Fixup hpd irq register setup ordering Cheers, Daniel > There might be more, I'm still recovering from mail floods due to > traveling last week. I think the right course of action is to revert > the offending patch (plus anything depending upon it) and give up on > rc6 on ilk in 3.8 - too messy. All bug reports confirmed that 3.9-rc > kernels work as expected. Upstream commits to revert: > > 15239099d7a7a9ecdc1ccb5b187ae4cda5488ff9 drm/i915: enable irqs earlier > when resuming > 52d7ecedac3f96fb562cb482c139015372728638 drm/i915: reorder setup > sequence to have irqs for output setup > > Cheers, Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
