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Date:      Wed, 10 Feb 2010 08:43:48 -0800
From:      Norbert Papke <npapke@acm.org>
To:        freebsd-x11@freebsd.org
Subject:   Re: freebsd7, radeon, xorg-server -> deadlock or so
Message-ID:  <201002100843.48541.npapke@acm.org>
In-Reply-To: <1265804660.8609.49.camel@balrog.2hip.net>
References:  <6101e8c41002091524q25a7e026u585e575eb4f1589c@mail.gmail.com> <201002091943.03523.npapke@acm.org> <1265804660.8609.49.camel@balrog.2hip.net>

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On February 10, 2010, Robert Noland wrote:
> On Tue, 2010-02-09 at 19:43 -0800, Norbert Papke wrote:
> > I think the variable include more than just the model of graphics card. 
> > I just replaced my motherboard, keeping all other components, disks,
> > software and configuration.  With the old motherboard my HD 3650 was
> > working great including 3D acceleration.  With the new board, X will
> > hang/crash with DRI enabled.  Even with DRI disabled, I still experience
> > problems with the screen not updating unless I wiggle the mouse.
> 
> Ah, this suggest an issue with interrupts.  If the driver is blocked
> waiting on an event, moving the mouse will interrupt the driver and
> force it to update.

Based on your suggestion in another thread, I tried to disable MSI.  This did 
not make a difference.  I still experience the hang.

I had only tried to start X with DRI disabled once.  The time I tried it, it 
worked with the above mentioned interrupt problem.  It seems that I got lucky 
that time.  I reattempted to run with DRI disabled, and hung the machine three 
times in a row.

I have run out of time for the moment and will try a few more things tonight.

-- Norbert Papke.
   npapke@acm.org




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