[Bug 35741] Blackscreen freeze/crash on kernel 2.6.38

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=35741

mrsteven at gmx.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mrsteven at gmx.de

--- Comment #1 from mrsteven at gmx.de 2011-05-16 15:28:20 PDT ---
Looks like this is the same problem that happened to me a few minutes ago. I
couldn't get a backtrace (didn't have the magic sysrq keys enabled). My chip is
the same and the symptoms are exactly the same. Even the music stopped to play.
Compositing (KWin 4.6.2) was enabled at that time and it happened while I was
scrolling in Firefox 3.6.17 (an hour or so after returning from hibernate).

I'm using kernel 2.6.38 for nearly two months now (2.6.38.6 for maybe a week)
and this was the first time I ran into this issue. Maybe KWin 4.6.2 triggers
it, because I just moved from KDE 4.4.5 to 4.6.2 a week ago. But I don't know,
as it is hard to reproduce.

lspci -v output for probably interesting devices:

00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev
21)
        Subsystem: ASUSTeK Computer Inc. Device 186a
        Flags: bus master, fast devsel, latency 0
        Memory at e0000000 (32-bit, prefetchable) [size=256M]
        Capabilities: [e4] Vendor Specific Information: Len=04 <?>
        Capabilities: [a0] AGP version 2.0
        Kernel driver in use: agpgart-intel

00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev
21) (prog-if 00 [Normal decode])
        Flags: bus master, 66MHz, fast devsel, latency 64
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: ff800000-ff8fffff
        Prefetchable memory behind bridge: ce900000-de9fffff

01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon
9600 M10] (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 1772
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 11
        Memory at d0000000 (32-bit, prefetchable) [size=128M]
        I/O ports at d800 [size=256]
        Memory at ff8f0000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at ff8c0000 [disabled] [size=128K]
        Capabilities: [58] AGP version 2.0
        Capabilities: [50] Power Management version 2
        Kernel driver in use: radeon



Software versions:
# emerge -pv kwin mesa xorg-server gentoo-sources xf86-video-ati

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] media-libs/mesa-7.10.2  USE="classic gallium gles llvm nptl
-debug -hardened -motif -pic (-selinux)" VIDEO_CARDS="radeon -intel -mach64
-mga -nouveau -r128 -savage -sis -tdfx -via -vmware" 0 kB
[ebuild   R   ] x11-base/xorg-server-1.9.5  USE="ipv6 nptl udev xorg -dmx -doc
-kdrive -minimal -static-libs -tslib" 0 kB                                      
[ebuild   R   ] sys-kernel/gentoo-sources-2.6.38-r5  USE="symlink -build
-deblob" 0 kB
[ebuild   R   ] kde-base/kwin-4.6.2  USE="opengl xcomposite (-aqua) -debug
(-kdeenablefinal) (-kdeprefix) -xinerama" 0 kB                                  
[ebuild   R   ] x11-drivers/xf86-video-ati-6.14.1  0 kB

I'm using the gallium driver. gentoo-sources-2.6.38-r5 is basically kernel
2.6.38.6 with some patches that are not related to the DRM module, as far as I
can see.

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