On Thu, 2005-10-06 at 18:06:39 -0300, Peter Cordes wrote: > On Wed, Jan 26, 2005 at 10:07:35AM -0500, David Wood wrote: > > Has anyone else noticed instability when using cpufreq modules? > > > > I have a pretty stable system, but I get OOPSes within a few hours > > or days of using cpufreq_ondemand, and I've had a few crashes I was > > pretty sure were related to cpufreq_userspace/powernowd. > I've found that my machine is a lot less stable when running at lower > than max speed. Not just stuff crashing, but memtest (from sysutils, > or memtester; just mlock()s some memory to test, not like > memtest86+). memtest finds errors when the CPU is slowed down. > There might be other correlated factors, like disk access. To change > speed, I've just used cpufreq-set -u 2000MHz (or 1800MHz, or > 1000MHz). Max speed is 2200MHz. (Newcastle core: from dmidecode: > ID: C0 0F 00 00 FF FB 8B 07 Signature: Extended Family 0, Model C, > Stepping 0)
I have tried powernowd on my A8V Deluxe with an AMD64 3200+ (Winchester core). When it runs at 1000MHz the core voltage is set to 1.1V, which I suspect is too low for running stably. Maybe the motherboard gives a too low voltage or the 1.1V is simply to low for my processor. By manually setting the vcore in the bios I can run at 1.3V at 2000MHz without any noticeable problems. The nominal value is 1.4 at 2000MHz, 1.35 at 1800MHz, and 1.1V at 1000MHz. I haven't found any way to adjust these vcore settings, when running in Cool'n'Quiet mode. I need to add that I have replaced the boxed fan (the mb handbook states that QnQ only works with the boxed fan and heatsink). I am controlling the CPU and chassis fan with the fancontrol script in the lm-sensors package. Anders -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
