Xorg 7.4 crashes on exit

[Robert Noland]

On Mon, 2009-03-30 at 11:53 +0100, N.J. Mann wrote:
> Hi Robert,
> 
> 
> [Moved from svn-src-all@ to x11@ to merge threads.]
> 
> In message <1237999344.1828.6.camel at balrog.2hip.net>,
> 	Robert Noland (rnoland at FreeBSD.org) wrote:
> > On Wed, 2009-03-25 at 09:29 +0000, N.J. Mann wrote:
> > > In message <200903250150.n2P1ou4g062376 at svn.freebsd.org>,
> > > 	Robert Noland (rnoland at FreeBSD.org) wrote:
> > > > Author: rnoland
> > > > Date: Wed Mar 25 01:50:56 2009
> > > > New Revision: 190401
> > > > URL: http://svn.freebsd.org/changeset/base/190401
> > > > 
> > > > Log:
> > > >   Rework the management of vblank interrupts a bit.
> > > >   
> > > >   When a vt switch occurs the irq handler is uninstalled.  Interrupts
> > > >   and the state tracking of what was enabled/disabled wasn't working
> > > >   properly.  This should resolve the reports of "slow windows" after a
> > > >   vt switch, among other things.  The radeon 2d driver seems to work a
> > > >   bit more correctly than the Intel driver.  With the Intel driver,
> > > >   vblank interrupts will be enabled at system startup and will only
> > > >   be disabled after an additional modeset (vt switch, dpms, randr event).
> > > >   
> > > >   With this patch, I am able to run glxgears synced to vblank and
> > > >   vt switch while it is running without ill effects.
> > > >   
> > > >   MFC after:	3 days
> > > > 
> > > > Modified:
> > > >   head/sys/dev/drm/drm_irq.c
> > > 
> > > Is this a possible cure for the problem I reported here:
> > > http://lists.freebsd.org/pipermail/freebsd-x11/2009-February/007670.html
> > 
> > It could be... interrupts were not working correcty, especially on
> > Intel.  There is likely still an issue with restarting X that I need to
> > look into, but I've not seen a problem vt switching or shutting down.
> 
> Okay I tried out your recent changes this morning.
> 
> First I did a svn update to r190540 to bring my sources up to date and
> then I built a new 7-Stable world and kernel and installed them.  Sadly,
> I still got the video mode corruption on exiting X or switching from X
> to a VT.  I then merged all the changes from head/sys/dev/drm to
> stable/7/sys/dev/drm and tried again.  Unfortunately, I got the same
> results.  (Xorg.log and dmesg.boot available if required.)  The changes
> I merged were: 190020, 190021, 190022, 190023, 190123, 190124, 190125,
> 190163, 190164, 190166, 190170, 190282, 190399, 190400, 19401 and
> 190433.  Some of these were probably not relevant, but I did everything
> to make it easier for me.  (I am very much still testing the water with
> svn and this was the first time I tried doing a merge!)
> 
> Any ideas where to go from here?

Which chip do you have?  I have a patch now that fixes vblank issues, at
least I can't break it.  This corruption issue on shutdown still exists,
but I've never had a problem vt switching.  I'm told that something is
still wrong with interrupts on g45 though.

robert.

> 
> Cheers,
>        Nick.
-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD
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