From: Willy Tarreau <w@1wt.eu>
To: Dave Airlie <airlied@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
linux-kernel@vger.kernel.org
Subject: Re: 3.5 regression on i915
Date: Sat, 6 Oct 2012 09:59:56 +0200 [thread overview]
Message-ID: <20121006075956.GF21163@1wt.eu> (raw)
In-Reply-To: <CAPM=9twQb7BUe6cAD-5THBBP-eYAU56__V5UXNn2qfqdFkVwmA@mail.gmail.com>
On Sat, Oct 06, 2012 at 03:43:56AM -0400, Dave Airlie wrote:
> On Sat, Oct 6, 2012 at 3:27 AM, Willy Tarreau <w@1wt.eu> wrote:
> > On Sat, Oct 06, 2012 at 01:58:45AM +0200, Willy Tarreau wrote:
> >> On Sat, Oct 06, 2012 at 09:48:57AM +1000, Dave Airlie wrote:
> >> > Any reason you don't have KMS, you'll keep hitting these non-kms bugs
> >> > since it has no users anymore really.
> >> >
> >> > Granted they'll get fixed, but I suspect its a losing battle over time.
> >>
> >> Well, back in old times every time I tried to enable it, I only ran into
> >> problems so I got used to disable it, which made sense since it didn't
> >> bring me any benefit.
> >
> > OK I found why in the end. When I enable KMS, my X server fails to start
> > and segfaults in intel_drv.so. So I think that the comment in Kconfig
> > below is quite appropriate :
>
> Okay are you running a really old userspace? just wondering what could
> cause this.
yes, my Xorg is 1.4.2 and xf86-video-intel is 2.7.1.
I have additional information, I retested with 3.4.12 with and without KMS :
3.4.12, no KMS : X works fine
3.4.12, KMS : X works fine but some garbage follows the mouse pointer
on the external display
3.5.x no KMS : kernel BUG
3.5.x KMS : X server segfaults in intel driver
So in fact, both the KMS/non-KMS confs have regressed in 3.5 on this setup.
It is possible that the commit which removed the list of pinned inactive
objects (1b50247a) has uncovered another long-time bug.
Regards,
Willy
next prev parent reply other threads:[~2012-10-06 8:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 23:42 Willy Tarreau
2012-10-05 23:48 ` Dave Airlie
2012-10-05 23:58 ` Willy Tarreau
2012-10-06 7:27 ` Willy Tarreau
2012-10-06 7:43 ` Dave Airlie
2012-10-06 7:59 ` Willy Tarreau [this message]
2012-10-06 8:24 ` Chris Wilson
2012-10-06 8:42 ` Willy Tarreau
2012-10-06 9:04 ` Chris Wilson
2012-10-06 9:17 ` Willy Tarreau
2012-10-06 16:10 ` Chris Wilson
2012-10-06 20:43 ` Willy Tarreau
2012-10-06 8:04 ` Chris Wilson
2012-10-06 8:20 ` Willy Tarreau
2012-10-06 8:43 ` Chris Wilson
2012-10-07 21:00 ` Daniel Vetter
2012-10-07 21:07 ` Willy Tarreau
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