Ryzen 5900X CPU governors not available, and can't change
Sophia Terry 
$ systemctl status cpufrequtils.service
● cpufrequtils.service - LSB: set CPUFreq kernel parameters Loaded: loaded (/etc/init.d/cpufrequtils; generated) Active: active (exited) since Wed 2022-01-26 16:58:27 EST; 11h ago Docs: man:systemd-sysv-generator(8) Tasks: 0 (limit: 76974) Memory: 0B CPU: 0 CGroup: /
Jan 26 16:58:27 Y4M1-II systemd[1]: Starting LSB: set CPUFreq kernel parameters...
Jan 26 16:58:27 Y4M1-II cpufrequtils[1960]: * CPUFreq Utilities: Setting ondemand CPUFreq governor...
Jan 26 16:58:27 Y4M1-II cpufrequtils[1960]: * disabled, governor not available...
Jan 26 16:58:27 Y4M1-II cpufrequtils[1960]: ...done.
Jan 26 16:58:27 Y4M1-II systemd[1]: Started LSB: set CPUFreq kernel parameters.
$ sudo cpufreq-set -g performance
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available, for example because of hardware which cannot be set to a specific frequency or because the userspace governor isn't loaded?
$ sudo ls -la /sys/devices/system/cpu/cpu0/
total 0
drwxr-xr-x 8 root root 0 Jan 26 16:58 .
drwxr-xr-x 33 root root 0 Jan 26 16:58 ..
drwxr-xr-x 6 root root 0 Jan 26 16:58 cache
drwxr-xr-x 4 root root 0 Jan 27 04:16 cpuidle
-r-------- 1 root root 4096 Jan 27 04:16 crash_notes
-r-------- 1 root root 4096 Jan 27 04:16 crash_notes_size
lrwxrwxrwx 1 root root 0 Jan 27 04:16 driver -> ../../../../bus/cpu/drivers/processor
lrwxrwxrwx 1 root root 0 Jan 27 04:16 firmware_node -> ../../../LNXSYSTM:00/LNXCPU:00
drwxr-xr-x 2 root root 0 Jan 27 04:16 hotplug
drwxr-xr-x 2 root root 0 Jan 27 04:16 microcode
lrwxrwxrwx 1 root root 0 Jan 27 04:16 node0 -> ../../node/node0
drwxr-xr-x 2 root root 0 Jan 27 04:16 power
lrwxrwxrwx 1 root root 0 Jan 26 16:58 subsystem -> ../../../../bus/cpu
drwxr-xr-x 2 root root 0 Jan 26 16:58 topology
-rw-r--r-- 1 root root 4096 Jan 26 16:58 ueventI don't know what changed, but I'm now suddenly unable to change the CPU governor on my Ryzen 5900X.
Which driver is supposed to be loaded?
2 Reset to default
