Resolved. It appears to be a BIOS bug. The mobo had BIOS version 1.0 installed, and I updated it to v1.4. I cannot now repeat the problem, and all runs smoothly. Should have checked that first really, I guess... > -----Original Message----- > From: Jean Delvare [mailto:khali at linux-fr.org] > Sent: 24 April 2006 07:35 > To: Roger Lucas > Cc: LM Sensors > Subject: Re: Kernel fault from ACPI when using W83627EHG on > 2.6.15 > > Hi Roger, > > > > When starting a new thread, please do NOT use the "reply" function of > > > your e-mail client on a random post. This confuses users of threading > > > e-mail clients a lot. > > > > I thought that I had started the thread with a new subject line. Is > there > > something else that I am missing that happens behind-the-scenes? > > No, changing the subject line doesn't make a new discussion thread. As > long as you use "reply", your post will include an "In-Reply-To:" > header with a reference to the post you are supposedly replying to, and > most "threading" clients will rely on this information rather than the > subject line. You really need to use "new" or "compose" to start a new > thread. > > > I've raised the problem on the mailing list: > > http://permalink.gmane.org/gmane.linux.acpi.devel/17523 > > > > I still want to know what is really going on though. This ACPI area is > not > > one I am familiar with, and although I have tried reading the > documentation, > > much of it is old and much more seems to indicate that a lot is > > manufacturer-specific. > > > > I have a few work-arounds for this problem, but I'm not comfortable > using > > them until I know what is actually going on. Disabling ACPI completely > > resolves the problem (but I lose ACPI). Removing the "thermal" module > in > > ACPI stops the kernel dump, but the machine still runs very slowly until > the > > over-temperature situation clears. This may be correct behaviour (e.g. > the > > processor is run at a much lower clock speed to help cool it down) but I > > don't know for sure. If I just set a very high cpu temperature limit > (e.g. > > 95C) then this also "fixes" the problem, but it is really just a hack > rather > > than a real solution. > > > > Hopefully, the guys on the ACPI mailing list can help. This doesn't > seem to > > be a problem with lm-sensors (as far as I can see). > > Yup, I agree with all you said above. > > -- > Jean Delvare