Error on read existing values and to try set a new value of undervolt.

[italodea]

The only change that really is set is the target temperature.

Ubuntu 20.04 (default gnome)
undervolt 0.3.0
python 3.8.2
pip 20.0.2

Samsung NP-300V4A
i5-2430M
intel HD-Graphics 3000
6GB DDR3

italo@np300:~$ sudo undervolt --core 0
Traceback (most recent call last):
File "/usr/local/bin/undervolt", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 401, in main
set_offset(plane, offset, msr)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 218, in set_offset
write_msr(write_value, msr.addr_voltage_offsets)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 79, in write_msr
os.write(f, pack('Q', val))
OSError: [Errno 5] Input/output error

italo@np300:~$ sudo undervolt -r
temperature target: -5 (95C)
Traceback (most recent call last):
File "/usr/local/bin/undervolt", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 445, in main
voltage = read_offset(plane, msr)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 204, in read_offset
write_msr(value_to_write, msr.addr_voltage_offsets)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 79, in write_msr
os.write(f, pack('Q', val))
OSError: [Errno 5] Input/output error

italo@np300:~$ sudo undervolt -t 90

italo@np300:~$ sudo undervolt -r
temperature target: -10 (90C)
Traceback (most recent call last):
File "/usr/local/bin/undervolt", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 445, in main
voltage = read_offset(plane, msr)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 204, in read_offset
write_msr(value_to_write, msr.addr_voltage_offsets)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 79, in write_msr
os.write(f, pack('Q', val))
OSError: [Errno 5] Input/output error

[IonutDanNica]

I have a Intel Pentium Silver J5005 and get his error mesage when trying to read data:

undervolt -r
temperature target: -0 (100C)
Traceback (most recent call last):
File "/usr/local/bin/undervolt", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 445, in main
voltage = read_offset(plane, msr)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 204, in read_offset
write_msr(value_to_write, msr.addr_voltage_offsets)
File "/usr/local/lib/python3.8/dist-packages/undervolt.py", line 79, in write_msr
os.write(f, pack('Q', val))
OSError: [Errno 5] Input/output error