linux-kernel - Re: [ 024/173] drm/i915: add Ivy Bridge GT2 Server entries

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Message-ID: <1356824335.4446.67.camel@deadeye.wl.decadent.org.uk>
Date:	Sun, 30 Dec 2012 00:38:55 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Jonathan Nieder <jrnieder@...il.com>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Eugeni Dodonov <eugeni.dodonov@...el.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Chris Wilson <chris@...is-wilson.co.uk>
Subject: Re: [ 024/173] drm/i915: add Ivy Bridge GT2 Server entries

On Sat, 2012-12-29 at 00:21 -0800, Jonathan Nieder wrote:
> Ben Hutchings wrote:
> 
> > This adds PCI ID for IVB GT2 server variant which we were missing.
> 
> As discussed at [1], this triggers a small regression with Debian
> wheezy userspace (X freezing instead of erroring out).  libdrm hasn't
> been updated in wheezy since then, and I wouldn't be surprised if
> other distros were affected, too.  Has there been a kernel patch since
> then to avoid that?
> 
> Though I wouldn't mind seeing this applied anyway, FWIW, as long as
> the announcement mentions the userspace bugfix needed.
>
> [1] http://thread.gmane.org/gmane.linux.debian.devel.bugs.general/978320/focus=74843

Sorry, forgot we'd discussed this before.  Thinking over this again, I'm
not convinced that X freezing at startup is a significant regression
from X failing to start.  Either way, it's unusable unless you
explicitly configure it to use vesa.

Ben.

-- 
Ben Hutchings
It is easier to change the specification to fit the program than vice versa.

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