PermissionError: [Errno 13] Permission denied: '/dev/cpu/0/msr'

[kachapman]

When trying to use the program, I get this output:

USER:~$ undervolt -r
Traceback (most recent call last):
File "/home/kenchapman/.local/bin/undervolt", line 8, in
sys.exit(main())
File "/home/kenchapman/.local/lib/python3.9/site-packages/undervolt.py", line 439, in main
temp = read_temperature(msr)
File "/home/kenchapman/.local/lib/python3.9/site-packages/undervolt.py", line 191, in read_temperature
return (read_msr(msr.addr_temp) & (127 << 24)) >> 24
File "/home/kenchapman/.local/lib/python3.9/site-packages/undervolt.py", line 88, in read_msr
f = os.open(n, os.O_RDONLY)
PermissionError: [Errno 13] Permission denied: '/dev/cpu/0/msr'

[georgewhewell]

use sudo

[kachapman]

I forgot to mention that Sudo doesn't fix the issue.

…

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[kachapman]

ken-sb2:~$ undervolt -r
You need to have root privileges to run this script with these options.
Rerun with 'sudo'.
ken-sb2:~$ sudo undervolt -r
sudo: undervolt: command not found

[kachapman]

Looks like the issue was secure boot all along. Is there no way to enable this with secure boot enabled?