From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH] drm/i915: Unlock panel even when LVDS is disabled Date: Tue, 02 Dec 2014 15:21:45 +0200 Message-ID: <87k32anq52.fsf@intel.com> References: <1417453015-8522-1-git-send-email-daniel.vetter@ffwll.ch> <20141202130002.GR32117@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20141202130002.GR32117@phenom.ffwll.local> Sender: stable-owner@vger.kernel.org To: Daniel Vetter , Alexey Orishko Cc: Daniel Vetter , Intel Graphics Development , stable@vger.kernel.org, Chris Wilson , Francois Tigeot , Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org On Tue, 02 Dec 2014, Daniel Vetter wrote: > On Tue, Dec 02, 2014 at 01:43:59PM +0100, Alexey Orishko wrote: >> On Mon, Dec 1, 2014 at 5:56 PM, Daniel Vetter wrote: >> > Otherwise we'll have backtraces in assert_panel_unlocked because the >> > BIOS locks the register. In the reporter's case this regression was >> > introduced in >> > >> > commit c31407a3672aaebb4acddf90944a114fa5c8af7b >> > Author: Chris Wilson >> > Date: Thu Oct 18 21:07:01 2012 +0100 >> > >> > drm/i915: Add no-lvds quirk for Supermicro X7SPA-H >> > >> > Alexey, please test this patch. >> > >> >> Thank you for the patch. >> I've tested this patch on the failed system (BIOS ver.1.0) with 3.17.4 >> kernel and it looks good. >> - Do you need dmesg log? > > Nope. > >> - Could this patch be merged into 3.18 kernel? > > Jani, can you please pick this one up as a regression fix? Pushed to drm-intel-fixes, thanks for the patch and testing. BR, Jani. > >> I've also checked that everything still ok on other mobos with BIOS >> ver.1.0c and 1.2a. >> >> One more question slightly out off topic: >> - could I use i915 driver with other Intel Atom CPUs, such as D2550 >> and Avoton C2550? > > Anything newer than what you have right now likely means gma500 (which is > horrible), unless it's a baytrail. Buyer beware, please triple-check that > it works before placing an order. Since I have no clue about marketing > names I'll refrain from a recommendation (too many ppl burned already). > -Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- Jani Nikula, Intel Open Source Technology Center