On Tue, 2010-11-30 at 20:20 +0100, Daniel Golesny wrote: > Package: linux-image-2.6-amd64 > Version: 2.6.32+28 > Severity: important > > I have a 10 days fresh squeeze installation on an ext4 partition. If I enable > the Cool n Quit function in the BIOS the system reboots after startup. > Sometimes while starting gnome, sometimes some seconds later, but always a blck > screen and a reboot and reproducable. > After disabling Cool n Quit in the BIOS I can startup normally. (AMD Live! is > enabled) > Unfortunately I could not find any log files (syslog, kern.log, dmesg are > empty), but tell me where I can find more information I will attach it later. > After the first tries without nvidia-drivers, I installed nvidia-glx but this > helped only sometimes. But with the nvidia driver I switched to TTY1 > (CTRL+ALT+1) while gnome starts up and then I got a kernel stacktrace instead > of a reboot. I looked and found several other reports like this. The kernel reports a processor exception that seems to mean that some code in the 'powernow-k8' driver used an invalid pointer, but the code at that location does not use a pointer. This implies that the processor malfunctioned after its power-saving state was adjusted. There is a known bug in some Athlon processors (erratum 311) that may cause this and which required a BIOS update to work around it, but it is not supposed to affect the Athlon 64 X2. > Some Sytem-Information: > AMD Athlon 64 X2 4200+ > Corsair DDR2 PC-800 6400 Kit (4x500MB) > M2N-E with nForce 570U > XFX GeForce7600/350 Since power-saving features do seem to depend partly on the BIOS, please check that the BIOS is up-to-date. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
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