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I want update my PCManFM-qt file manager in LXQt desktop from 0.14.2 to 0.17.0 and i use this command:

sudo apt install pcmanfm-qt

but it says that you are using the latest version.

How can I upgrade PCManFM-qt to the latest version?

Lubuntu: 20.04.3

apt policy pcmanfm-qt

Output:

pcmanfm-qt:
Installed: 0.14.1-0ubuntu3
  Candidate: 0.14.1-0ubuntu3
  Version table:
 *** 0.14.1-0ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status
guiverc
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Sajad Speed
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  • What version of Lubuntu do You have? I have just checked version of pcmanfm-qt in my installation of Ubuntu 21.10 and it's 0.17. – Michal Przybylowicz Oct 02 '21 at 18:34
  • Please edit your question and show the output of apt policy pcmanfm-qt – Organic Marble Oct 02 '21 at 18:47
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    Does this answer your question? Why don't the Ubuntu repositories have the latest versions of software? – guiverc Jun 20 '22 at 02:03
  • Ubuntu 20.04 LTS uses the latest LTS libraries/toolkot that created at it's creation, which was Qt 5.12 (5.12.2 or .3 if I recall correctly at release; later updated to 5.12.8 as I recall) where as later pcmanfm-qt requires later toolkits/libraries than are available for 20.04 or focal. FYI: pcmanfm-qt is more than just a file-manager; it handles quite a bit of the LXQt desktop you see, so you need to upgrade your whole desktop; which is currently available given 21.10 is where do-release-upgrade will take you. – guiverc Jun 20 '22 at 02:07

3 Answers3

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The updated LXQt will require you to also upgrade your Qt5 version.

Lubuntu 20.04 LTS shipped with the latest version of LXQt that worked with the LTS version of Qt 5.12.8 that was shipped with Ubuntu 20.04 LTS.

Subsequent releases of Qt 5 have not been LTS; so you'll need to upgrade regularly if you do, and by far the easiest fix is to release-upgrade to a later release.

fyi: pcmanfm-qt handles much of the LXQt desktop, so you cannot just upgrade that package without upgrading the rest of your LXQt; as well as the Qt toolkit it works with - ie. a large part of your software stack relies on it.

All other Qt5 apps will also need upgrading... (so they match the newer release you'll have installed), as all Qt5 apps in a specific release all use the same Qt, which was 5.12.8 LTS for Ubuntu 20.04 LTS

N0rbert
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guiverc
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  • If you want to have a look at what's involved; KDE Neon is the Ubuntu 20.04 LTS base; with a Qt5 stack from later Ubuntu releases allowing them to use a later KDE Plasma. LXQt & KDE share the same Qt5 and the two teams (Kubuntu & Lubuntu) are in touch very regularly as changes impact us both. There are issues with using KDE Neon; and you'll be introducing those same issues into your system -- whether they'll impact you though only you can decide. If you nuke & install to upgrade; you won't care for example. – guiverc Oct 02 '21 at 21:39
  • When I mentioned Kubuntu & Lubuntu working together, that was for the focal or 20.04 cycle.. since that release; Ubuntu Studio is now using Qt5 as their primary desktop toolkit so are involved as well; but they didn't join until groovy or after 20.04 as they used Xfce (GTK3) in focal – guiverc Oct 02 '21 at 22:30
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Really you can upgrade pcmanfm-qt and other LxQt components to latest versions using “Lubuntu Continuous Integration” team – UNSTABLE CI Output - Proposed Pocket PPA.
But be careful as maintainers warn users with "⚠️ This PPA is not meant to be used ⚠️" message.

Add the above PPA and then install packages from it using commands below:

sudo add-apt-repository ppa:lubuntu-ci/unstable-ci-proposed
sudo apt-get update
sudo apt-get install pcmanfm-qt
sudo apt-get dist-upgrade
sudo apt-get autoremove --purge

to get LxQt 0.16 with PcManFm-Qt 0.17:

LxQt from PPA

To revert to default versions use commands below:

sudo apt-get install ppa-purge
sudo ppa-purge ppa:lubuntu-ci/unstable-ci-proposed
N0rbert
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  • I update my LXQt but everything went wrong. Please help me to get back to the same stable version. – Sajad Speed Oct 03 '21 at 16:12
  • Sounds unclear. Use sudo apt-get install ppa-purge && sudo ppa-purge ppa:lubuntu-ci/unstable-ci-proposed to revert. – N0rbert Oct 03 '21 at 18:35
  • This just remove unstable ppa and i did it. I want rollback lxqt pcman and all packages to old version – Sajad Speed Oct 03 '21 at 18:39
  • Then add it back sudo add-apt-repository ppa:lubuntu-ci/unstable-ci-proposed and then run sudo ppa-purge ppa:lubuntu-ci/unstable-ci-proposed again. I tried this way on fresh VM before posting. Do not have any issues. This is why I posted it as a solution. – N0rbert Oct 03 '21 at 18:46
0

Install lubuntu 21.10 - pcmanfm-qt 0.17 works without issues. Today it is beta, but will be stable in this month.

pasman pasmański
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