>> root@stacy:~# grep . /proc/acpi/thermal*/*/* /proc/acpi/fan/*/* >> /proc/acpi/thermal_zone/THRM/cooling_mode:<setting not supported> >> /proc/acpi/thermal_zone/THRM/polling_frequency:<polling disabled> >> /proc/acpi/thermal_zone/THRM/state:state: ok >> /proc/acpi/thermal_zone/THRM/temperature:temperature: 73 C >> /proc/acpi/thermal_zone/THRM/trip_points:critical (S5): 104 C >> grep: /proc/acpi/fan/*/*: No such file or directory > 73 C is beyond 72 C :) Sorry, my bad :-) > 104 sounds as if the HW would switch off before, could still be a thermal > issue. Hmm, but the fans seem to be controlled by HW... I am pretty sure it somehow is hardware related. And as the subject suggests I am not even sure it is ACPI related (I don't know jack about ACPI so I cannot identify if it is involved :-) However, it seems that my laptop is shutting itself off when ACPI is enabled. (Though, it hasn't done that for almost 2 days now - it's like when you've been coughing all night and then when you go to the doctors office you can't cough. The minute you step outside the coughing starts again. Maybe I should stay on the linux-acpi list :-) >> Also, when I see the shutdowns it occurs as you described above - the >> hardware shutdown. > Means, the power just gets switched off? Yes. Just like that. > You should try to reproduce this easier somehow. Heavy battery/thermal > reading, switching cpufreq up and down or something? I will try to create a script which scales the CPU and reads the battery .. > How often does that happen? Seldom enough to be easily diagnosed but often enough to be a pain in the a**! > If it happens often you could try to exclude/not load ACPI drivers, cpufreq > drivers. Switch off C-states. These are good candidates. To have a stable system I boot with "apci=off noacpi" will that also kill the cpufreq drivers? Turning off the acpi means I cannot have the machine automatically turn off when I request a shutdown. A minor thing I can live with ... How do I switch off C-states? (And what does it mean? :-) > Does this only happen with X? So far, yes. But I am only using X. If I need to do console work (which I often do) I use xterm or gnome-termina. > Did this machine ever worked fine with older kernels/distributions? Yes. I've been an avid slackware user and I never saw these problems. OTOH back then I rolled my own kernel and as far as I recall it did have parts of the ACPI interface included (primarily the battery interface) ... /brian -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html