I have just been setting up a new system using the Abit LG81 motherboard. This is a fairly recent mobo with the Intel ICH7 chipset and the w83627ehg sensor chip (...no uGuru, thank goodness...) I got everything installed OK using a Debian ISO image I downloaded from the web which is based around what I believe to be the stock 2.6.15 kernel. The w83627ehf module was not loaded by default, so I modprobe'd the "w83627ehf" module and it went in without error. I installed "lm-sensors" from the Debian packages (v2.9.1). When I ran "sensors", I got back the correct speeds for the 3 fans fitted and the system temperatures. Everything matched the BIOS. When I ran "sensors -s", however, I immediately got a kernel dump. I haven't managed to get a proper capture of this, but the errors at the top were: acpi_ps_parse_aml acpi_ps_execute_pass acpi_ps_execute_method acpi_ps_execute_control_method acpi_ps_evaluate_by_handle acpi_ps_evaluate_relative acpi_evaluate_object acpi_evalute_integer acpi_thermal_get_temperature acpi_thermal_check acpi_acquire_mutex ... When I checked the sensors configuration, I found that the high temperature thresholds were just below what my board was reading (CPU is at about 50 degrees and the PWM at about 45 degrees - not too high, but above the original thresholds). When I changed them to much higher values so that they wouldn't trigger (high=95 deg, hyst=85 deg), the kernel dumps stopped. I did a bit of a search through the lm-sensors mailing list archives and found the suggestion to boot with "acpi=off", so I tried it. Booting with "acpi=off", if I have temperature thresholds that are lower than the sensors temperatures, and run "sensors -s", I get no kernel faults but I do get a high-low beeping from the motherboard! When I change the sensors.conf file to have higher temperature thresholds so that the alarms don't trigger, then the beeping from the motherboard stops (and still no kernel fault). Although booting with "acpi=off" is a workaround, I would _really_ like to have ACPI running as it means that the power button on the front of the box does a controlled shutdown (rather than a hard power-off) if pressed briefly as well as a few other nice features. I appreciate that this looks like an ACPI problem, but it seems to be triggered by the over-temperature from the w83627ehf module, so I thought that it would be best to check this out first. Googling for the problem seems to suggest some kind of device conflict may be occurring, but this was on a kernel mailing list thread dating back to the 2.6.8.1 kernel in 2004. Can anyone offer any help on this... - Has anyone seen anything similar? - Does anyone have a solution that allows me to keep ACPI active? All help on this is appreciated. Thanks, Roger
