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From: Chris Clayton <chris2553@googlemail.com>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Disable high-precision vblank timestamping for UMS
Date: Sun, 23 Jan 2011 12:55:13 +0000	[thread overview]
Message-ID: <201101231255.13967.chris2553@googlemail.com> (raw)
In-Reply-To: <b7da2f$q7be7q@fmsmga001.fm.intel.com>

On Sunday 23 January 2011, Chris Wilson wrote:
> On Sun, 23 Jan 2011 11:28:22 +0000, Chris Clayton <chris2553@googlemail.com> 
wrote:
> > Hi Chris,
> >
> > On Sunday 23 January 2011, Chris Wilson wrote:
> > > We only have sufficient information for accurate (sub-frame)
> > > timestamping when the modesetting is under our control.
> >
> > With this patch (and the earlier one) applied, X still doesn't start. At
> > the end of xorg's log file I see:
> >
> > Fatal server error:
> > Failure to wait for IRQ: No such device
>
> Now we are getting closer! The X server has been caught red-handed trying
> to use an interrupt when the driver never enabled them. Ho hum.
>
> The interrupts for UMS are only enabled between EnterVT/LeaveVT, but that
> code looks defunct. What version of xf86-video-intel are you using?

It's 2.7.1, which, IIRC, is the latest version that will build against all the 
other xorg libraries that are on my system. I'll do a quick check after lunch 
to see if any later versions will build without me going through dependency 
hell.

Thanks for your help so far,

Chris

> -Chris

-- 
The more I see, the more I know. The more I know, the less I understand. 
Changing Man - Paul Weller

  reply	other threads:[~2011-01-23 12:55 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <:201101220935.03623.chris2553@googlemail.com>
2011-01-22 10:11 ` [PATCH] drm/i915: Increase the amount of defense before computing vblank timestamps Chris Wilson
2011-01-22 11:18   ` Chris Clayton
2011-01-22 18:01     ` Chris Wilson
2011-01-23  8:56       ` Chris Clayton
2011-01-23  9:32         ` Chris Clayton
2011-01-23 10:50           ` [PATCH] drm/i915: Disable high-precision vblank timestamping for UMS Chris Wilson
2011-01-23 11:28             ` Chris Clayton
2011-01-23 12:44               ` Chris Wilson
2011-01-23 12:55                 ` Chris Clayton [this message]
2011-01-23 13:06               ` [PATCH] drm/i915: Handle the no-interrupts case for UMS by polling Chris Wilson
2011-01-23 15:38                 ` Chris Clayton
2011-01-23 15:59                   ` Chris Wilson
2011-02-10 19:58                     ` Chris Clayton
2011-02-10 20:37                       ` Chris Wilson
2011-01-23 10:52           ` [PATCH] drm/i915: Increase the amount of defense before computing vblank timestamps Chris Wilson

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