[SOLVED] Updatemanager (3.0.3) --allow-downgrades is not understood

[tacos40]

Hello

I write down these notes hoping it'll be somehow helpful for some users... and/or wonderful team of SolydXK maintainers

a) Problem: SolydX updatemanager always working finely (1 year or more)...
...but it's failing lately, since mid July 2016 with message:

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Errors were encountered while processing:
 updatemanager
E: Command line option --allow-downgrades is not understood

b) Workarounds (sudo). I've succeeded with any of them:
b.1) Option 1: Update packages using Synaptic Package Manager
b.2) Option 2: Update with aptitude

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aptitude update 
aptitude safe-upgrade

b.3) Option 3: List packages with updatemanager but install them manually with apt-get

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...
apt-get install ntp
apt-get install openssh-client
...

c) Observations My yet incomplete notes:
c.1) UPDATEMANAGER BUG? : line 45 of updatemanager.conf file
containing the --allow-downgrades offending string :

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cat /usr/lib/solydxk/updatemanager/files/updatemanager.conf

c.2) UPDATEMANAGER BUG? : line 52 of updatemanager.postinst file
containing a call to unexistent /usr/lib/solydxk/system/adjust.py :

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cat /var/lib/dpkg/info/updatemanager.postinst

c.3) Addendum: There is also a .pyc file without associated .py

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 ls -ltr /usr/lib/solydxk/system/configobj.pyc

The latter is likely irrelevant for the problem above but .pyc presence without .py is risky
and could be useful from time to time... a systematic removal of orphaned .pyc files ..¿? IMHO.

Welcome comments, corrections, etc.

[uvchik]

I have the same problem. As a workaround I just use

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sudo apt-get update
sudo apt-get dist-upgrade

Starting the update manager again I get an "Everything is up to date!"

[Arjen Balfoort]

I missed this one (was on vacation at the time)!

If you have these kind of errors it's due to an old or corrupt configuration file.
You can safely remove the file to set the update manager back to its defaults:

1. Close the update manager

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   sudo rm /usr/lib/solydxk/updatemanager/files/updatemanager.conf

3. Start the update manager

[tacos40]

Hello

Thank you Schoelje! for your reply

- I had already tried that removal 1-2 months ago... and it did not work.
I decided to uninstall 'updatemanager' as it is not performing its function anymore.
- I have tried to install back 'updatemanager' *today* and it fails... again:

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# apt-get install updatemanager
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  updatemanager
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/75.8 kB of archives.
After this operation, 693 kB of additional disk space will be used.
Selecting previously unselected package updatemanager.
(Reading database ... 219684 files and directories currently installed.)
Preparing to unpack .../updatemanager_3.0.3_all.deb ...
Unpacking updatemanager (3.0.3) ...
Processing triggers for menu (2.1.47) ...
Processing triggers for hicolor-icon-theme (0.13-1) ...
Processing triggers for mime-support (3.58) ...
Processing triggers for desktop-file-utils (0.22-1) ...
Setting up updatemanager (3.0.3) ...
/var/lib/dpkg/info/updatemanager.postinst: 52: /var/lib/dpkg/info/updatemanager.postinst: /usr/lib/solydxk/system/adjust.py: not found
dpkg: error processing package updatemanager (--configure):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 updatemanager
E: Sub-process /usr/bin/dpkg returned an error code (1)

So /var/lib/dpkg/info/updatemanager.postinst: 52 appears again, as referred in my initial POST
Corruption is deeper, and I would appreciate help identifying the offending package/lib/config file

By the moment, I will purge again 'updatemanager' (I keep updating with aptitude update then safe-upgrade)

Thank you again in advance

[Zill]

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 ...
/var/lib/dpkg/info/updatemanager.postinst: 52: /var/lib/dpkg/info/updatemanager.postinst: /usr/lib/solydxk/system/adjust.py: not found

Please open a terminal and post the full output of the following command:

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apt policy solydxk-system

[tacos40]

Hello!

Thank you Zill... for asking the right question!

- That *solydxk-system* package was not installed: I assume it was somehow erroneously removed in the past
- I immediately re-installed it yesterday... installed automatically some other packages, etc.
- Rebooted, etc, re-installed updatemanager ... and all is running finely now

This is the result today:

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apt-cache policy solydxk-system
solydxk-system:
  Installed: 2.3.6
  Candidate: 2.3.6
  Version table:
 *** 2.3.6 0
        600 http://ftp.nluug.nl/os/Linux/distr/solydxk/repository/ solydxk/main amd64 Packages
        100 /var/lib/dpkg/status

Additionally:

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apt show solydxk-system
Package: solydxk-system                  
New: yes
State: installed
Automatically installed: no
Version: 2.3.6
Priority: optional
Section: admin
Maintainer: Arjen Balfoort <arjenbalfoort@solydxk.com>
Architecture: all
Uncompressed Size: 273 k
Depends: python3, aptitude, util-linux, parted
Recommends: solydk-info | solydx-info, solydx-system-adjustments | solydk-system-adjustments
Conflicts: solydk-grub2-theme, solydk-grub2-theme, solydkbe-grub2-theme, solydkbe-grub2-theme,
           solydkbo-grub2-theme, solydkbo-grub2-theme, solydxbe-grub2-theme, solydxbe-grub2-theme
Replaces: solydk-grub2-theme, solydk-grub2-theme, solydkbe-grub2-theme, solydkbe-grub2-theme,
          solydkbo-grub2-theme, solydkbo-grub2-theme, solydxbe-grub2-theme, solydxbe-grub2-theme
Description: SolidXK System Base Package
 Used by the desktop and other SolydXK tools to gather information and process common system tasks.

- I wonder what is the Debian command to determine where a file (library, binary or config file) comes from?
- I know there is a query command in Redhat based systems (rpm -qf) returning package where the file comes from:

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rpm -qf /completepath/misteriousfile

- The idea is to apply similar query command to file "/usr/lib/solydxk/system/adjust.py", getting result: solydxk-system
- Maybe there is not such a command...

If someone knows what is the equivalent command... I would appreciate it

Thank you again Zill:

[tacos40]

An approximation for the command I want is next one:

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 dpkg-query --search 'adjust.py'
solydxk-system: /usr/lib/solydxk/system/adjust.py

However: what happens if package is not correctly installed ?
Handy command in these cases would be useful for troubleshooting.

Thank you for additional commands

[Zill]

I'm pleased you found the problem.

Would you now please mark the thread as solved to help any other users with a similar query. You need to edit your first post in this thread and add the prefix [Solved] to the title. Only the OP (Original Poster) can do this.

... I wonder what is the Debian command to determine where a file (library, binary or config file) comes from?
- I know there is a query command in Redhat based systems (rpm -qf) returning package where the file comes from:

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rpm -qf /completepath/misteriousfile

- The idea is to apply similar query command to file "/usr/lib/solydxk/system/adjust.py", getting result: solydxk-system
- Maybe there is not such a command...

If someone knows what is the equivalent command... I would appreciate it

You can use "dpkg -S <packagename>" to search for a filename from installed packages.

e.g.

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roger@dino:~$ dpkg -S adjust.py
solydxk-system: /usr/lib/solydxk/system/adjust.py