maximilian attems wrote :
It's a bit too early to tell, but seems like 2.6.26-rc8-amd64 from Debian is working as fine as is the vanilla kernel. It's currently running on two clones of the "problematic" system and no freeze so far. One is stock kernel just installed from trunk repository, running in console mode without x started. The other one has been rebuilt (but with strictly the stock 2.6.26-rc8-amd64 configuration file) from trunk linux-source-2.6.26-rc8 with gcc 4.3 (Lenny default), and is running with x and nvidia's latest beta driver, doing equally good. Looks like the problem is strictly a 2.6.25 issue. I would really like to understand what's going wrong in the equation Debian Lenny - my hardware - 2.6.25 kernel ... I tried once again the 2.6.25 , using the working 2.6.26 config to build it, but only to freeze the system after a mere 30 minutes. The cpu seems to be idling even though there is activity on the box, and never coming up again. Nothing works, keyboard (ps2) and "magic" keys are useless, just a message telling "cpu stuck for xx seconds" for a while, then even this freezes and I have to hard-reboot. Exact same system and hardware, I really can't settle for a configuration problem or some weird cpufreq governor ill behavior since it's working perfectly with 2.6.24 and 2.6.26... and even the vanilla 2.6.25 is crashing the same way.okay thanks for retesting. please checkout 2.6.26-rc8 from debian linux images, see apt trunk lines http://wiki.debian.org/DebianKernel if those are also freezing please send in the working config for 2.6.26-rc8. kind regards
Anyway, I can live with not knowing as long as my system works again and I am able to upgrade the kernel when needed.
If you need anything else, or if there's a way I can rebuild a 2.6.25 with debug on to help gathering information I can do it, but I doubt it would be of any interest since we've already moved on to 2.6.26 . Of course if 2.6.25 is to be the next Stable default kernel you may come across weird problems like mine again...
Best regards,Tom