I just installed Ubuntu GNOME (via the minimal install, as no other Live CDs would boot) on a desktop computer which has an AMD Triple-core Phenom 8450 processor. The issue is, that after one reboot after installation, I cannot get the system to start in any GNU/Linux distro successfully. Windows 7 works fine (probably because it just ignores the issue), and here's why:

On booting GNU/Linux, the kernel boot log text (on screen while booting) displaying this error message:

[16.458331] k10temp 0000:00:18.3: unreliable CPU thermal sensor; monitoring disabled

and then the system just hangs there.

Now this would tell me that there is probably an issue with the CPU thermal sensor, except for the fact that I know that the temp sensor works fine, as I can see a live temperature reading from my BIOS.

So I did a little reading on the Arch Wiki and came across this: https://wiki.archlinux.org/index.php/Lm-sensors#K10Temp_Module

The above article mentions that some K10 processors (of which family mine belongs to) have issues with their temperature sensors. This can be worked around however by adding the force=1 module parameter to k10temp on load.

# rmmod k10temp
# modprobe k10temp force=1

or in /etc/modprobe.d/k10temp.conf add

options k10temp force=1

So I found my solution (or rather half of it). I just need to unload that kernel module so my system can actually boot. How do I do this from grub, and make my next boot honour it? The console syntax is not the same as bash environment.

Alternatively, how do I get a working Linux console up so that I can make these necessary changes?

  • I would do it from a live system. You mount the right partition and operate there, and then try to reboot to the disk. – dadexix86 Aug 7 '16 at 16:53
  • oh geez, I've basically given up here and almost forgot about this question. The problem was that I couldn't even boot the machine past grub, because the kernel module (loaded by default) prevented booting iirc. – Keefer Rourke Oct 17 '16 at 16:28

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