The culprit appears to be xscreensaver-gl.  My current combination is:

gutsy default intel driver + gnome-screensaver + compiz = working.

Peter's intel driver also works.

If you are suffering from this bug, check if xscreensaver-gl is installed.
If it is, try removing it and then report your results.  This may not solve
the bug, but it might help isolate it, and provide a useable workaround.

Rory

On 11/1/07, Rory Grant <email address hidden> wrote:
>
> Success!!!
>
> The bug is definitely related to gnome-screensaver.  I uninstalled
> gnome-screensaver, and installed xscreensaver and now  suspend, screen
> locking etc. all work with compiz enabled, using Peter's driver.
>
> I noticed I had  xscreensaver-gl installed previously too.  I'll try a few
> combinations, and report my results soon.
>
> Rory
>
> On 11/1/07, Rory Grant <email address hidden> wrote:
> >
> > This is not a suspend issue at all.  Suspend works fine.  It is resuming
> > an X session after the screen is locked that is the problem.
> >
> > My laptop is a Dell 640m, with intel 945GM chipset.  The bug occurs when
> > the screen is blanked/locked under the following circumstances:
> >
> > Compiz enabled, intel xorg driver (using Peter's tst3 driver above).
> > Compiz enabled, i810 xorg driver.
> >
> > the password prompt to unlock the screen shows up, the keyboard works
> > fine until you unlock the screen.  Then I am faced with a blank, backlit
> > screen, with the mouse pointer visible and working.  The keyboard is
> > unresponsive.  the only key that works for me is the wireless switch
> > function key.  Screen brightness does not work.  The only method of
> > recovering my computer is to hard reset tthe  machine.
> >
> > Attached is the output of lspci -vv, my xorg.conf, and my x log .
> >
> > I wonder if this bug might be related to the gnome screensaver?
> >
> > Thanks for the efforts,
> >
> > Rory
> >
> > On 11/1/07, Aaron Whitehouse <email address hidden> wrote:
> > >
> > > The crash still occurs on pressing the lid-close button. I will attach
> > > my Xorg log (I am back in the testing install, so will attach the
> > > "old"
> > > log).
> > >
> > > Changing brightness is not affected (that occurs in BIOS on a Dell
> > > laptop) and nothing else seems to be affected either.
> > >
> > >
> > > ** Attachment added: "Xorg.0.log.old"
> > >    http://launchpadlibrarian.net/10230493/Xorg.0.log.old
> > >
> > > --
> > > xserver-xorg-video-intel hangs the system when laptop lid is closed
> > > https://bugs.launchpad.net/bugs/138256
> > > You received this bug notification because you are a direct subscriber
> > > of a duplicate bug.
> > >
> >
> >
> >
> > --
> >
> > My email address has changed to <email address hidden>
> >
> > From October <email address hidden> will no longer be active.  Please update
> > your address book.
> >
> > Cheers,
> >
> > Rory
> >
> >
>
>
> --
>
> My email address has changed to <email address hidden>
>
> From October <email address hidden> will no longer be active.  Please update
> your address book.
>
> Cheers,
>
> Rory
>



-- 

My email address has changed to <email address hidden>

From October <email address hidden> will no longer be active.  Please update
your address book.

Cheers,

Rory