Linux Mint Upgrade tool not working (TypeError: expected str)

[dannybackx]

Different error on my system :
Traceback (most recent call last):
File "/usr/lib/linuxmint/mintupgrade/checks.py", line 89, in run self.do_run()
File "/usr/lib/linuxmint/mintupgrade/checks.py", line 746, in do_run subprocess.Popen(cmd)
File "/usr/lib/python3.8/subprocess.py", line 858, in __init__ self._execute_child(args, executable, preexec_fn, close_fds,
File "/usr/lib/python3.8/subprocess.py", line 1639, in _execute_child self.pid = _posixsubprocess.fork_exec(
TypeError: expected str, bytes or os.pathLike object, not NoneType

[dannybackx]

Addition to last post : it says this in the terminal window in which I started mintupgrade :

2214 upgraded, 295 newly installed, 19 to remove and 0 not upgraded.
179 standard security updates
Need to get 0 B/2,549 MB of archives.
After this operation, 1,210 MB of additional disk space will be used.
Download complete and in download only mode
Check succeeded: Package download

Running check 'Phase 3: Upgrade'

Running check 'Session inhibition'
mintupgrade-inhibit-power: no process found
Root @ hp: {7}

[kato181]

What version of LM are you upgrading from?
Did you do the following..

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sudo apt install mintupgrade

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sudo mintupgrade

[dannybackx]

I upgraded from 20.2 to 20.3 prior to trying the 20.3 to 21.0 upgrade.
After that, I followed the instructions on https://linuxmint-user-guide.readthedoc ... nt-21.html
so :

Code: Select all

apt update
apt install mintupgrade
mintupgrade

all from a tcsh root prompt.
I also appear to have three versions of a mintupgrade-<timestamp>.log file.
All of them end with :

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Check succeeded:  Package download

Running check 'Phase 3: Upgrade'

Running check 'Session inhibition'
mintupgrade-inhibit-power: no process found

Obviously the first did a bunch of downloads, the subsequent runs didn't.

[devenrai]

I have the same problem. Here is the screenshot of the `mintupgrade` when it fails.


The log file says:

Running check 'Phase 3: Upgrade'

Running check 'Session inhibition'
mintupgrade-inhibit-power: no process found

[dannybackx]

Actually slightly different (line numbers).
I got an upgrade to "mintupgrade but still the same problem :

Note this is with mintupgrade 2022.08.13, previously 2022.08.05.

[Gruppo Sportivo]

I upgraded from 20.2 to 20.3 prior to trying the 20.3 to 21.0 upgrade.
After that, I followed the instructions on https://linuxmint-user-guide.readthedoc ... nt-21.html
so :

Code: Select all

apt update
apt install mintupgrade
mintupgrade

The correct command to launch the Upgrade Tool is:

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sudo mintupgrade

[dannybackx]

The correct command to launch the Upgrade Tool is:

Code: Select all

sudo mintupgrade

I grinned a bit at your reply but said to myself "always check before you reply".
This does workaround the bug, so thanks.

[devenrai]

No luck:
`sudo mintupgrade`

[devenrai]

[Solved] Update: Mintupgrade 2022.08.13 fixed all problems!