k8temp not working with gentoo-sources-2.6.34 [solved]

[BitJam]

I recently tried upgrading from gentoo-sources-2.6.32 to gentoo-sources-2.6.34. Almost everything went smooth except k8temp no longer worked and neither did my fan-control.

I've got an ASUS M4A78 PLUS motherboard and I use a dual core Athlon-64 CPU. I also use the (deprecated) it87 module and the "acpi_enforce_resources=lax" kernel parameter. I don't know if that was part of the problem with the newer kernel or not. The last time I checked, the module that is supposed to replace it87 doesn't do fan control at all.

As I said, fan-control was pretty much inoperative but at least I was lucky that it failed into a state of having the fans constantly on. In addition, the k8temp temperatures were no longer being reported correctly in Gkrellm. I tried poking around /sys/class/hwomon/hwmon*/device/ but I couldn't figure out what was going on.

Edit: The "problem" was with libsensors. It seems that with the older kernel, libsensors was getting its config info from /etc/sensors.conf but the with newer kernel was getting it from /etc/sensors3.conf if it exists so all my config info in sensors.conf was being ignored. I don't understand why changing the kernel would make libsensors change in this way. I would have thought the change in default config file would have happened when libsensors was upgraded not when the kernel was upgraded. Oh well.

[BradN]

It may have just been a conincidence that you updated libsensors but didn't check whether it worked until after your kernel update.

[BitJam]

I don't think so. When I switched back to the older kernel (before updating sensors3.conf), the temperature readings were correct. The temperature readings changed drastically just by booting a different kernel. When I ported my changes to sensors3.conf, the readings from both kernels became consistent.

[BradN]

Strange... then the only thing I can think of is that the default settings are somehow acceptable for older kernels but not new ones.