From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: [Intel-gfx] [PATCH] drm/i915: Disable all outputs early, before KMS takeover Date: Fri, 1 Apr 2011 14:51:42 +0300 Message-ID: References: <1301395589-8121-1-git-send-email-chris@chris-wilson.co.uk> <20110401114429.GA3526@viiv.ffwll.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: <20110401114429.GA3526@viiv.ffwll.ch> Sender: linux-kernel-owner@vger.kernel.org To: Chris Wilson , intel-gfx@lists.freedesktop.org, Pekka Enberg , linux-kernel@vger.kernel.org Cc: Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org On Fri, Apr 1, 2011 at 2:44 PM, Daniel Vetter wrote: > On Tue, Mar 29, 2011 at 11:46:29AM +0100, Chris Wilson wrote: >> If the outputs are active and continuing to access the GATT when we >> teardown the PTEs, then there is a potential for us to hang the GPU. >> The hang tends to be a PGTBL_ER with either an invalid host access or >> an invalid display plane fetch. > > This patch seems to fix resume flakiness (that recently developed > complete reliability in hanging the gpu) on my i855gm. Captured > error_states look as described here. Latest -staging merged into latest > -linus is now again fully reliable at s/r. > > Tested-by: Daniel Vetter Unfortunately I get a blank screen with after boot: Nacked-by: Pekka Enberg