E-book Viewer app name on Ubuntu so I can purge reinstall?

[Prof_Hari_Seldon]

I installed Calibre E-book Viewer on Ubuntu Software but cannot find it in $ sudo apt list --installed I can only find:

calibre/focal-updates,focal-updates,now 4.99.4+dfsg+really4.12.0-1ubuntu1 all [installed]

I accidentally uninstalled Python3 not in my sandbox but the base of my Ubuntu ASUS ROG G752VL. When the computer repair shop rebuilt my Ubuntu all the apps work but not Calibre E-book Viewer anymore. The viewer sometimes works but crashes unexpectedly it is very flaky.

I tried "sudo apt-get remove --purge calibre" and reinstall but that didn't fix it.

Attached are images of my Ubuntu crash report. It clearly shows issues with the Python dependencies.

[Prof_Hari_Seldon]

I also tried "$ sudo apt-get remove --purge calibre-bin"

I am scared to try the below because I am taking courses right now and don't want to break my computer. I already got python rebuilt once before to fix my computer would the --reinstall really be any different than the rebuild?

$ sudo apt-get install --reinstall python
https://askubuntu.com/questions/4489...n-is-corrupted

[theducks]

Did you use the repository (apt get)? Don't
Use the command line found on the Calibre Linux download page

[Prof_Hari_Seldon]

You mean?:
sudo -v && wget -nv -O- https://download.calibre-ebook.com/linux-installer.sh | sudo sh /dev/stdin

https://calibre-ebook.com/download_linux

I installed it from Ubuntu Software. See the attached images. Ubuntu Software is supposed to work.

[theducks]

That picture is a Beta version
5.99.4

5.35 is the released version

There is a thread under plugins (since PI have to keep up with the new Python) to report issues

[chaley]

Originally Posted by Prof_Hari_Seldon

Ubuntu Software is supposed to work.

Unfortunately, in calibre's case it often doesn't. That is why Kovid doesn't support Linux repository versions of calibre.

Originally Posted by theducks

That picture is a Beta version
5.99.4

I see 4.99.4, which is even worse. That is a beta of calibre 5, more than 16 months old. Ubuntu should *not* be supplying that version.

Install calibre from the official download site: https://calibre-ebook.com/download

[DNSB]

Originally Posted by Prof_Hari_Seldon

I installed it from Ubuntu Software. See the attached images. Ubuntu Software is supposed to work.

Most of the Linux repositories have a version of calibre available. Some have outdated versions (one I recently looked at is still offering 3.41), some have beta versions as in the beta for calibre 5 you are showing. Unless you have someone involved with the repository who actually cares about calibre (Arch Linux for one example), it is generally best to use the version from the calibre site.

[Prof_Hari_Seldon]

Continuation of:
https://www.mobileread.com/forums/sh....php?p=4193601
Because:
"There is a thread under plugins (since PI have to keep up with the new Python) to report issues"

Attached are images of my Ubuntu crash report. It clearly shows issues with the Python dependencies.

I installed Calibre E-book Viewer on Ubuntu Software but cannot find it in $ sudo apt list --installed I can only find:

calibre/focal-updates,focal-updates,now 4.99.4+dfsg+really4.12.0-1ubuntu1 all [installed]
python3/focal,now 3.8.2-0ubuntu2 amd64 [installed,automatic]

I accidentally uninstalled Python3 not in my sandbox but the base of my Ubuntu ASUS ROG G752VL. When the computer repair shop rebuilt my Ubuntu all the apps work but not Calibre E-book Viewer anymore. The viewer sometimes works but crashes unexpectedly it is very flaky.

I tried "$ sudo apt-get remove --purge calibre" and reinstall but that didn't fix it.

I also tried "$ sudo apt-get remove --purge calibre-bin"

I am scared to try the below because I am taking courses right now and don't want to break my computer. I already got python rebuilt once before to fix my computer would the --reinstall really be any different than the rebuild?

$ sudo apt-get install --reinstall python
https://askubuntu.com/questions/4489...n-is-corrupted

[Prof_Hari_Seldon]

Thanks! I want to try to install calibre from the website. Does Calibre from the website include Calibre E-Book viewer?

See attached images.

[DNSB]

Uninstall the beta 4.99.4 version you installed from the Ubuntu repository and install the official version using the command line from https://calibre-ebook.com/download_linux . If and only if, you still have the same issues, feel free to report them in these forums.

And note the thread referred to was Plugin devs: Upcoming migration to Qt 6. This is discussing the upgrade to calibre 6 and it's upgrade to Qt6. No one is discussing issues with running a pre-calibre 5 beta.

[DNSB]

Originally Posted by Prof_Hari_Seldon

Thanks! I want to try to install calibre from the website. Does Calibre from the website include Calibre E-Book viewer?

See attached images.

Yes, the viewer is part of the calibre package.

[BetterRed]

↑ ↑ ↑ ✔

Moderator Notice

I'm moving this out of the Plugins sub-forum into the Viewer sub-forum.

I suggest the OP installs the current calibre version for Linux from here ==>> calibre - Download for Linux

Addendum - I'm going tp merge this thread with a duplicate post I found in Devices, which I've already moved the main Calibre forum

@Prof_Hari_Seldon - see ==>>Guideline #3

BR

[DNSB]

One other item that comes to mind is that you may have to install some of the xcb packages. If calibre starts with an error about loading xcb, see Calibre 5.0.1 Could not load the Qt platform plugin "xcb" FIXED for some help.

Edit: Going back to my notes for Ubuntu 20.04, I needed to run:

sudo apt-get install libxcb-xinerama0

to correct the startup error.