Followed instructions exactly and this is of course the errror code I get as usual with everything here Have to be a computer wizard programmer with 20 years of experience to get something simple to work.

[fghjgsrhsdes3456]

undervolt --read
modprobe: ERROR: could not insert 'msr': Operation not permitted
Traceback (most recent call last):
File "/home/owner/.local/bin/undervolt", line 8, in
sys.exit(main())
File "/home/owner/.local/lib/python3.8/site-packages/undervolt.py", line 386, in main
subprocess.check_call(['modprobe', 'msr'])
File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['modprobe', 'msr']' returned non-zero exit status 1.

[jbarrozo]

You have to run with sudo.

sudo undervolt --read

[trevluv]

You have to run with sudo.

sudo undervolt --read

Now I am getting this error when I followed your advice.

owner@owner-Legion-Y540-15IRH:~$ sudo undervolt --read
sudo: undervolt: command not found

[georgewhewell]

sudo python -m undervolt
or
sudo $(which undervolt)
or
sudo -E undervolt

should work