On Tuesday, 21 November 2023 22:12:28 GMT Laurence Perkins wrote: > I have a system here running an Intel N97 processor, which is idling at > 70-80C on Gentoo with all cores 99% idle. This is 40 degrees hotter than > it runs on Ubuntu or Windows 10. > > Powertop confirms that the CPU is spending nearly all of its time in idle > mode. I have tried both the 6.1 and the 6.5 kernels, including the > pre-compiled gentoo-kernel-bin version just to be sure it's not something > in *my* config messing it up. > > I'm not really sure where to look next. There doesn't seem to be anything > actually *using* the CPU or GPU to any significant degree. Certainly not > enough to explain the temperature difference. If anyone has advice on what > diagnostics to try next to find out what's going on I'd appreciate it. > > Thanks, > LMP
The fact you get a report of 40° hotter temperature does not mean the CPU temperature is actually higher. Do you get any other indications the PC is running hot, e.g. the fans are spinning faster, the heatsink is hotter to the touch, or when measured with an infrared thermometer? Is the 'sensors' command output, after you have run sensors-detect, different than Ubuntu's? Is the content of /etc/sensors3.conf different between the two distros? Are there different sensor modules loaded? Some chip drivers report spurious results and need specifying a different measurement method/sensor device. You can take a look here for you CPU/MoBo chip: https://www.kernel.org/doc/Documentation/hwmon/
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