From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: xrandr fails after resume from hibernation in kernels 4.7.4 and 4.8.0 Date: Sat, 29 Oct 2016 09:47:24 -0400 Message-ID: <20161029134724.GA3972@kroah.com> References: <20161004234303.GA2670@debianG> <20161005052323.GA8915@kroah.com> <20161007133817.GA2166@debianG> <20161028155340.GC19549@kroah.com> <20161028162324.GK4617@intel.com> <20161029131325.GC7952@debianG> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id 068586E03C for ; Sat, 29 Oct 2016 13:47:16 +0000 (UTC) Content-Disposition: inline In-Reply-To: <20161029131325.GC7952@debianG> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Gaston Gonzalez Cc: stable@vger.kernel.org, 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2016 09:47:24 -0400 From: Greg KH To: Gaston Gonzalez Cc: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [Intel-gfx] xrandr fails after resume from hibernation in kernels 4.7.4 and 4.8.0 Message-ID: <20161029134724.GA3972@kroah.com> References: <20161004234303.GA2670@debianG> <20161005052323.GA8915@kroah.com> <20161007133817.GA2166@debianG> <20161028155340.GC19549@kroah.com> <20161028162324.GK4617@intel.com> <20161029131325.GC7952@debianG> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20161029131325.GC7952@debianG> User-Agent: Mutt/1.7.1 (2016-10-04) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 29, 2016 at 10:13:25AM -0300, Gaston Gonzalez wrote: > On Fri, Oct 28, 2016 at 07:23:24PM +0300, Ville Syrjälä wrote: > > On Fri, Oct 28, 2016 at 11:53:40AM -0400, Greg KH wrote: > > > On Fri, Oct 07, 2016 at 10:38:17AM -0300, Gaston Gonzalez wrote: > > > > On Wed, Oct 05, 2016 at 07:23:23AM +0200, Greg KH wrote: > > > > > On Tue, Oct 04, 2016 at 08:43:03PM -0300, Gaston Gonzalez wrote: > > > > > > Hi, > > > > > > > > > > > > After hibernation I get the following error when I tried to connect to monitor > > > > > > through hdmi: > > > > > > > > > > > > $ xrandr --output LVDS1 --off --output HDMI1 --auto > > > > > > xrandr: Configure crtc 1 failed > > > > > > > > > > > > This does not happen in kernel in kernel v4.6.7 but do happen in kernels v4.7.4 > > > > > > and v4.8.0 > > > > > > > > > > Ah, can you use 'git bisect' to track down the offending patch? > > > > > > > > > > Also, if you let the graphics driver authors know, they are probably the > > > > > best ones to help out with this, not the "generic" stable mailing list. > > > > > > > > > > thanks, > > > > > > > > > > greg k-h > > > > > > > > Hello, > > > > > > > > The culprit commit seems to be: > > > > > > > > commit: ed4a6a7 > > > > drm/i915: Add two-stage ILK-style watermark programming > > > > > > > > Attached the bisection log. > > > > > > > > Let me know if additional test or bisect is needed. > > > > > > > > Best regards, > > > > > > > > Gaston > > > > > > > git bisect start '--' 'drivers/gpu/drm/' > > > > # good: [096998b11906dd79df5af4d688c9974342dd09f2] Linux 4.6.7 > > > > git bisect good 096998b11906dd79df5af4d688c9974342dd09f2 > > > > # bad: [c8d2bc9bc39ebea8437fd974fdbc21847bb897a3] Linux 4.8 > > > > git bisect bad c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 > > > > # good: [2dcd0af568b0cf583645c8a317dd12e344b1c72a] Linux 4.6 > > > > git bisect good 2dcd0af568b0cf583645c8a317dd12e344b1c72a > > > > # bad: [3c85f20a289d044f303f473ee6ab7502303fc3b0] Merge tag 'omapdrm-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next > > > > git bisect bad 3c85f20a289d044f303f473ee6ab7502303fc3b0 > > > > # bad: [a64424d722504926f3375bc4887976e3bfe3a01d] Merge branch 'drm-next-4.7' of git://people.freedesktop.org/~agd5f/linux into drm-next > > > > git bisect bad a64424d722504926f3375bc4887976e3bfe3a01d > > > > # bad: [b5bf0f1ea3658254bd72ef64abc97786e8a32255] drm/exynos: clean up register definions for fimd and decon > > > > git bisect bad b5bf0f1ea3658254bd72ef64abc97786e8a32255 > > > > # bad: [27878ede4fec7b929c3010710ba4d55c617c621d] drm/i915: Throw out BUGs from DPLL/PCH functions > > > > git bisect bad 27878ede4fec7b929c3010710ba4d55c617c621d > > > > # bad: [72341af4285ae1337c0dfdfa3e68318b52b8757c] drm/i915: hide away VBT private data in a separate header > > > > git bisect bad 72341af4285ae1337c0dfdfa3e68318b52b8757c > > > > # bad: [71f0a626143368b8aead361ffaff7e36d043fd8e] drm/i915: Only use sanitized values for ILK watermarks > > > > git bisect bad 71f0a626143368b8aead361ffaff7e36d043fd8e > > > > # bad: [66e2c4c39cc37beaccc24c9d14c75d627fce9cf4] drm/i915/gen9: Disable DC states if power well support is disabled > > > > git bisect bad 66e2c4c39cc37beaccc24c9d14c75d627fce9cf4 > > > > # bad: [4f2d9934bd6ac73950832c96b385822846670668] drm/i915: Pass drm_frambuffer to intel_compute_page_offset() > > > > git bisect bad 4f2d9934bd6ac73950832c96b385822846670668 > > > > # bad: [1d5bf5d9d9ef0c1e639d36178a224d83888c5a29] drm/i915: Add missing NULL check before calling initial_watermarks > > > > git bisect bad 1d5bf5d9d9ef0c1e639d36178a224d83888c5a29 > > > > # bad: [d9f8e52b22454a30aaaf26b7ef029598b30abf8e] drm/i915: remove dead code > > > > git bisect bad d9f8e52b22454a30aaaf26b7ef029598b30abf8e > > > > # bad: [c3454d575da162cd310d9b83696baefb29d10a70] drm/i915: remove left over dead code > > > > git bisect bad c3454d575da162cd310d9b83696baefb29d10a70 > > > > # bad: [ed4a6a7ca853253f9b86f3005d76345482a71283] drm/i915: Add two-stage ILK-style watermark programming (v11) > > > > git bisect bad ed4a6a7ca853253f9b86f3005d76345482a71283 > > > > # first bad commit: [ed4a6a7ca853253f9b86f3005d76345482a71283] drm/i915: Add two-stage ILK-style watermark programming (v11) > > > > > > > > > Nothing from the graphics developers? Come on, here is someone who > > > found a specific patch that causes a problem, and no one responds? > > > > Probably no one noticed the mail on account of the relevant lists > > not getting Cc:d from the get go. Sorry. > > > > > > > > Why isn't this fixed by reverting the above mentioned patch in Linus's > > > tree already? Or, is there something else that needs to be done? > > > > IIRC the problems caused by that watermark stuff should have been fixed by > > some combination of these > > 9bd18728a3f2 ("drm/i915: Ignore stale wm register values on resume on ilk-bdw (v2)") > > 7045c3689f14 ("drm/i915: Don't leave old junk in ilk active watermarks on readout") > > d890565c4444 ("drm/i915: Use the active wm config for merging on ILK-BDW") > > f1ecaf8f9c99 ("drm/i915: Start WM computation from scratch on ILK-BDW") > > > > so it's not quite clear if the bisect landed at the right spot, or if we > > have more than one overlapping regression around. > > > > Please file a bug at > > https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel > > and attach the full dmesg from boot up to when you reproduced the > > problem. And pass drm.debug=0xe to kernel so that we'll get (hopefully) > > enough debug information into the log. > > > > Trying the latest nightly tree from > > git://anongit.freedesktop.org/drm-intel drm-intel-nightly > > would also be a good idea, in case we already fixed the problem. > > > > -- > > Ville Syrjälä > > Intel OTC > > Hi, > > Now I'm running a 4.8.4 kernel and the problem seems to be solved. So no > need to file a bug report, right? Ah, that's great, no need! > I have no problem in running further tests/bisect if needed, though. Nope, all should be good now, thanks for letting us know. greg k-h