Public bug reported:
I'm using Ubuntu 18.04.4 LTS.
I installed fv using the package ftools-fv (version: 5.4+dfsg-4)
Whenever I open the software to visualize a .FITS file, it works.
When I close the app (close the last of the 3 windows fv open), the
system freeze. I just tried again and it simply froze and went back to
normal.
However, when I did the experiment again from the command line, I got the
following message, with no clear error at the end. I don't know if it's
usefull. In case:
```bash
$ fv
XPA$WARNING: xpans needs to be running on this machine.
Please start xpans using the command:
xpans -e -p 14285 -l /tmp/.xpa/xpans_14285.log
Once xpans is running, register all xpas in this process using:
xpaset -p 7f000101:42893 -nsconnect
For now, contact pow using: xpaset 7f000101:42893 .. or xpaget 7f000101:42893 ..
For now, contact fv using: xpaset 7f000101:41703 .. or xpaget 7f000101:41703 ..
```
NOTE: I did not try to open a specific .FITS file, it crash even with no
file opened.
Finally, this happen to me for months if not years. This happened to me
using 2 different computers.
** Affects: fv (Ubuntu)
Importance: Undecided
Status: New
** Tags: crash display fv quit
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https://bugs.launchpad.net/bugs/1876736
Title:
fv can't quit properly (crash of gnome-shell)
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