linux-kernel - Re: [drm:init_ring_common] *ERROR* render ring head not reset to zero

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Date:	Sun, 5 Dec 2010 06:28:25 +0000 (UTC)
From:	Sriram <sri.kmb@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [drm:init_ring_common] *ERROR* render ring head not reset to zero

Chris Wilson <chris <at> chris-wilson.co.uk> writes:

> 
> On Mon, 4 Oct 2010 22:31:20 +0200, Thomas Meyer <thomas <at> m3y3r.de> wrote:
> > [    0.556247] [drm:init_ring_common] *ERROR* render ring head not reset to
zero ctl 00000000 head
> 02001000 tail 00000000 start 02001000
> > [    0.556320] [drm:init_ring_common] *ERROR* render ring head forced to
zero ctl 00000000 head 00000000
> tail 00000000 start 02001000
> > 
> > Bug or feature?
> 
> Hardware feature, software bug. Could also be a feature of the software to
> report a hardware bug...
> 
> At any rate, it shouldn't be happening and you are not alone at finding
> such errors in your logs.
> -Chris
> 


Hi Chris,

Please explain what this error means & why it is happening...

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