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Thread: Pop OS problem

  1. #1
    Join Date
    Jul 2021

    Pop OS problem

    Sorry if this is the wrong place. I feel pretty lost, but from what I understand Pop OS is built on Ubuntu so I assume this is correct. Anyways, I have an issue. Whenever I install ANYTHING from the Pop Shop, I get the error "Error while installing package: installed postfix package post-installation script subprocess returned error exit status 75" and it says installation failed. However, the app still installs. It has done this with Steam, Wine, WineTricks, and PlayOnLinux. Steam will load, but it takes an excessively long time and I never receive the email from SteamGuard (Not sure if it's related to the installation error, but just including). Any idea how to fix this? From what I googled, I seen a comment about removing the space in the computer ID name if present, but mine does not have one (It's labeled as JameyLaptop). Also in addition to that, I have an issue with the Fractional Scaling option. !00% and 200% work perfectly fine, but anything else makes the desktop stretch completely off screen, and the only way to resolve it is to swap back to 100% or 200%.

  2. #2
    Join Date
    Feb 2008
    Ubuntu 20.04 Focal Fossa

  3. #3
    Join Date
    Aug 2017
    melbourne, au
    Lubuntu Development Release

    Re: Pop OS problem

    If this was a Ubuntu/Debian system and I had issues in a software/applications centre/center/store I'd explore it via terminal.

    Firstly check there are no issues in your sources.

    sudo apt update
    read or scan the lines shown to ensure they look valid, and no warnings or errors are shown. If it's fine, I'd move to the next step, otherwise I'd fix them and repeat the `apt update` (update software lists) step. This output should also reflect your unstated release (ie. I'm on impish so I'd expect only impish to appear on on lines; if you're on focal or 20.04 you'd expect to read only focal) so I'd look for potential red-flags/causes of problems where some lines contain a codename for a release you're not running.

    sudo apt full-upgrade
    ie. try and install all upgrades available for your system. Yes many users limit the upgrade, but given you have problems I'd let your system fully-upgrade. Again I'd read the output and take note of any error messages or warnings that show.

    Often errors here have clues; which may have you running fix commands such as --fix-broken (`sudo apt -f install`) but messages will usually provide clues as to what to run, though usually the output is somewhat explicit in what to run to fix.


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