linux-kernel - Re: 2.6.26-rc1-git1 -- trying to get vblank count for disabled pipe 0

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Message-Id: <1210020669.21903.16.camel@mtlp.tischlernetz>
Date:	Mon, 05 May 2008 22:51:09 +0200
From:	Mirco Tischler <mt-ml@....de>
To:	Steven J Newbury <steve@...wbury.org.uk>
Cc:	Michel Dänzer <michel@...gstengraphics.com>,
	Miles Lane <miles.lane@...il.com>,
	David Airlie <airlied@...ux.ie>,
	DRI for Linux <dri-devel@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.26-rc1-git1 -- trying to get vblank count for disabled
	pipe 0

On Mo, 2008-05-05 at 13:51 +0100, Steven J Newbury wrote:
> Miles isn't alone, I also get 'trying to get vblank count for disabled
> pipe 0' (GM965).  vblank interrupts were previously not working for me,
> but they are now.  I'm not sure what's changed. 
> > 
> > Do you have any GL apps running when this happens?
> > 
> For me, this happens every time a GL app is run.
> 
> I'm also getting occasional lockups.  Often it's the window manager
> (metacity) that locks up when attempting to move a window, restarting
> the window manager unlocks X but attempting to move a window again
> results in another lockup.  When it's locked up the pointer moves and vt
> switching works but nothing else.  Other times I've had a hard lockup
> that required a hard reboot, this happens less frequently.
> 
As written in a mail before, I have similar issues. I had the vblank
messages in 2.6.25-git17 or so, but they seem gone no. At that time, I
also had lockups, mostly when switching back from a vt to X. I was still
able to move the mouse, but the rest of the screen just didn't change
anymore. SSH login was still possible, so I tried to restart the X
server, but that did nothing. Although the X processes were finished, I
still had the X surface on my display, what seems rather strange to me.
By now situation has improved a bit, as the machine doesn't lockup
anymore. But from time to time I still get windows where only the outer
frame is shown, the contents of the window is transparent.
I have the impression that suspend/hibernation worsens the problems (no
proof though).
My graphics is a gm965 and I'm using gnome with the new compositing-able
metacity used in ubuntu 8.04.

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