Comment 8 for bug 27968

I also have this bug, or something related.

With the 6.9.0 packages, I faced hardware freezes (not even magic key
are available) after a few minutes of use. It looks like that the freeze
is related to redrawing : when I browse my files with rox-filer, and
then change from a populated dir to an almost empty one, rox-filer
resizes the window, and my X freezes. This doesn't cause a freeze if the
resize is not significant. When I surf with firefox and click on my
adblock icon to show the dialog, I also get a freeze.

What is strange though, is that when I open a VNC connection, it doesn't
freeze instantly, despite displaying quite a big window
(1280x1024). However, if I open an application (my RSS reader, say)
within the VNC session, my X freezes instantly.

All the freezes seem to have in common displaying large amounts of white, but
that sounds a bit stupid said like that...

When i downgraded my xserver-xorg to xserver-xorg_6.8.2.dfsg.1-11, and
only this package, all the not-so-random freezes stopped, and I was able
to finally enjoy my X sessions.

Here's the lspci output (it's a laptop) :

00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev 21)
01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 21)
1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03)
1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83)
1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03)
1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03)
1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 03)
1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03)
00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10]
00.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
02.0 Network controller: Intel Corporation PRO/Wireless 2200BG (rev 05)
03.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 001)

I don't think that my xorg config is relevant, because I tried various
options without a change, both with "ati" and "radeon" drivers, with or
without DRI, EXA, REnderAccel, Composite... I attach it anyway, one
never knows.

I'm running an up-to-date sid on a Centrino laptop, with no exotic
packages related to X.

Please let me know if you need some extra information.

Thanks for taking the time to read and try to understand what could fix
this strange bug.

Regards,
--
Lucas BONNET