From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Klausmann Subject: Re: [Nouveau] 3.12rc1-pre Nouveau? oops Date: Mon, 09 Sep 2013 01:02:36 +0200 Message-ID: <522D020C.6070402@mni.thm.de> References: <1378675264-3005-1-git-send-email-tobias.johannes.klausmann@mni.thm.de> <522CF3D1.2020303@mni.thm.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Dave Airlie Cc: Ilia Mirkin , nouveau , LKML List-Id: nouveau.vger.kernel.org On 09.09.2013 00:29, Dave Airlie wrote: > On Mon, Sep 9, 2013 at 8:01 AM, Tobias Klausmann > wrote: >> On 08.09.2013 23:33, Dave Airlie wrote: >>>>> Looks like you have Optimus (intel + nvidia), and the backtrace has >>>>> runtime pm in it, which is something new Dave added for 3.12, adding >>>>> him in explicitly. The simplest explanation is that disp->init is >>>>> NULL. And it seems like there are no outputs from the earlier nouveau >>>>> init prints. I guess that the call to nouveau_display_resume from >>>>> nouveau_pmops_runtime_resume should be guarded by a if >>>>> (dev->mode_config.num_crtc) like it is everywhere else. >>>>> >>>>> -ilia >>>> Your guess was right, this (hopefully attached patch) fixes it for me! >>> Does it look like this one? >>> >>> Dave. >> No, mine was quick and dirty, reverted it and took yours. But i'm a little >> bit confused that this is a suspend/resume problem, i booted the kernel for >> the first time while seeing the oops. But anyway i tested it and it works. > It's runtime suspend/resume - so it turns the nvidia gpu off at boot since it > isn't being used. > > you should see longer battery life. > Dave. Ah thanks for the explanation. Can we see the state in /sys somewhere? I looked around but did not find something to determine the state? /sys/bus/pci/drivers/nouveau/0000:01:00.0/drm/card0/power/runtime_status gives me "unsupported". But i suspect thats because of nouveaus lack to properly reclock my nvidia gpu. Anyway i'm better of asking you for the right anyswer. Thanks for your time, Tobias