[Intel-gfx] [PATCH] drm/i915: Unlock panel even when LVDS is disabled

[Daniel Vetter]

On Tue, Dec 02, 2014 at 01:43:59PM +0100, Alexey Orishko wrote:
> On Mon, Dec 1, 2014 at 5:56 PM, Daniel Vetter <daniel.vetter at ffwll.ch> 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 <chris at chris-wilson.co.uk>
> > 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?

> 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