I have now traced the problem to the graphics card driver. The reason
why the 64 bit installation did not crash was that it used the vesa
driver instead of the default Radeon driver. I have a Radeon graphics
card installed (the following is a piece of the log produced by the
Radeon driver):
(II) RADEON(0): EDID for output VGA-0
(II) RADEON(0): Manufacturer: VSC Model: f14 Serial#: 16843009
(II) RADEON(0): Year: 2003 Week: 27
(II) RADEON(0): EDID Version: 1.3
(II) RADEON(0): Analog Display Input, Input Voltage Level: 0.700/0.300 V
(II) RADEON(0): Signal levels configurable
(II) RADEON(0): Sync: Separate CompositeSerration on. V.Sync Pulse
req. if CompSync or SyncOnGreen
(II) RADEON(0): Max Image Size [cm]: horiz.: 32 vert.: 24
(II) RADEON(0): Gamma: 2.20
(II) RADEON(0): DPMS capabilities: Off; RGB/Color Display
(II) RADEON(0): First detailed timing is preferred mode
(II) RADEON(0): redX: 0.626 redY: 0.338 greenX: 0.278 greenY: 0.601
(II) RADEON(0): blueX: 0.150 blueY: 0.068 whiteX: 0.096 whiteY: 0.109
I now use it by means of the vesa driver:
(II) LoadModule: "vesa"
(II) Loading /usr/lib/xorg/modules/drivers//vesa_drv.so
(II) Module vesa: vendor="X.Org Foundation"
compiled for 1.6.3, module version = 2.2.1
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 5.0
(II) VESA: driver for VESA chipsets: vesa
(II) Primary Device is: PCI 0...@00:00:0
In other words, I edited xorg.conf and replaced the default
Section "Device"
Identifier "Configured Video Device"
EndSection
by
Section "Device"
Identifier "Generic Video Card"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection
and everything seems to work fine now.
--
Recent i386 karmic kernels crash, amd64 kernels are OK
https://bugs.launchpad.net/bugs/489712
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