Created attachment 28942 [details]
dmesg

I kindly ask for indulgence as this is my first bugreport here.

I have a Gigabyte M61P-S3 motherboard with an AMD CPU installed:

model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 5600+

I use cpu scaling feature if this matters (powernow-k8 cpufreq_ondemand). After recent kernel update (using Archlinux 64 bit packages):

[2010-09-01 11:01] upgraded kernel26 (2.6.34.1-1 -> 2.6.35.4-1)

my plasmoid which measures CPU core temperatures started to display very lowered values. After some digging I found it is probably using lm_sensors, which reports bad values as well:

[root@linux mk]# sensors
k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp:   +5.0°C                                    
Core0 Temp:   +6.0°C                                    
Core1 Temp:   +7.0°C                                    
Core1 Temp:   +2.0°C

[root@linux mk]# 

I should have there at least 27°C.

I use a standard often updated Archlinux system with no stange configuration or devices attached. Probably a dmesg output can tell you more.