Thanks for the report.

$ urpmq --requires-recursive  task-lxqt-minimal | grep xterm
$ urpmq --whatrequires-recursive xterm | grep lxqt
$ urpmq --requires-recursive pcmanfm | grep xterm
$ urpmq --requires-recursive pcmanfm-qt | grep xterm
$ urpmq --whatrequires-recursive xterm | grep pcmanfm

So there is no dependency from either lxqt nor pcmanfm[-qt] for xterm, confirmed in the reverse sense.
I suspect that this dependency should be from pcmanfm[-qt], not lxqt - which *does* require pcmanfm-qt. Trying PcmanFM on LXDE:
 pcmanfm-qt-0.16.0-4.mga8
 pcmanfm-1.3.1-3.git20210129.2.mga8
(xterm *not* installed); launching it, then F4 gave the same error. I will screenshot it.

Source RPM: task-lxqt-minimal ? => pcmanfm-1.3.1-3.git20210129.2.mga8.src.rpm, pcmanfm-qt-0.16.0-4.mga8.src.rpm
Summary: LXQt: xterm not found, pressing F4 in the default file manager PCManFM => xterm not found, pressing F4 in PCManFM[-qt], missing dependency

Created attachment 12364 [details]
Showing the PcmanFM error on F4 if xterm not installed

pcmanfm & pcmanfm-qt have various committers, so assigning this globally and CC'ing the main ones.

Assignee: bugsquad => pkg-bugs
CC: (none) => geiger.david68210, nicolas.salguero

Installed lxqt from Classic ISO final turn and with Online Repositories set at installattion time, so I can have the lxqt desktop proposed by DrakX.

Run this on VM x86_64 spin.
Logon lxqt-desktop session.

Run pcmanfm-qt.
Press F4.
Booh xterm.

So, I don't know what's wrong here.

CC: (none) => ouaurelien

$ rpm --qa --last > ~/rpmlist.txt

Searching for xterm string:
xterm-363-1.mga8.x86_64                       sam. 20 févr. 2021 15:45:11
vim-enhanced-8.2.2143-2.mga8.x86_64           sam. 20 févr. 2021 15:45:11
strace-5.10-1.mga8.x86_64                     sam. 20 févr. 2021 15:45:11
sonnet-config-5.76.0-2.mga8.x86_64            sam. 20 févr. 2021 15:45:11
sane-backends-iscan-1.0.31-3.mga8.x86_64      sam. 20 févr. 2021 15:45:11
rpmdrake-6.32-1.mga8.noarch                   sam. 20 févr. 2021 15:45:11
qastools-0.23.0-2.mga8.x86_64                 sam. 20 févr. 2021 15:45:11
notepadqq-1.4.8-5.mga8.x86_64                 sam. 20 févr. 2021 15:45:11
lxqt-sudo-0.16.0-2.mga8.x86_64                sam. 20 févr. 2021 15:45:11
lxqt-globalkeys-0.16.0-3.mga8.x86_64          sam. 20 févr. 2021 15:45:11
lxqt-config-0.16.1-2.mga8.x86_64              sam. 20 févr. 2021 15:45:11
lxqt-about-0.16.0-2.mga8.x86_64               sam. 20 févr. 2021 15:45:11
kguiaddons-5.76.0-1.mga8.x86_64               sam. 20 févr. 2021 15:45:11
inxi-3.2.01-1.mga8.noarch                     sam. 20 févr. 2021 15:45:11
trojita-0.7-8.git20200625.2.mga8.x86_64       sam. 20 févr. 2021 15:45:10
sddm-config-editor-0.1.r8246144-5.mga8.x86_64 sam. 20 févr. 2021 15:45:10

It is in same rpm transaction at install time with other lxqt rpms.

Note also that REPORTER's bug was done by installing Xfce BEFORE installing after a first reboot, task-lxqt. Does urpmi consider some terminal apps already installed?

Note also that you can choose your preferred Terminal app under pcmanfm-qt Preferences, advanced tab. There is a drop-down menu for it.

Hello,
I have done an installation with the classical installer, selecting LXQt Desktop only.
F4 with pcmanfm-qt opens a separate window which seems to be xterm.
xterm is in the menu, alongside with qterminal.
What I would expect is that default terminal would be qterminal.

CC: (none) => yves.brungard_mageia

I also wonder why xterm is set by default rather use of qterminal...

Normally xterm should not be needed with our pcmanfm-qt packake!

This http://svnweb.mageia.org/packages/cauldron/pcmanfm-qt/current/SOURCES/pcmanfm-qt-0.16.0-mga-customize-default-appearance.patch?revision=1675349&view=markup patch should call qterminal.

Oh! That is strange!

Created attachment 12372 [details]
settings.conf in user space

This is the onf file used, from .config/pcmanfm-qt/lxqt
It has Terminal=xterm
The installation is fresh from yesterday, with /home formatting.

So that is the bug then

task-lxqt requires qterminal

Summary: xterm not found, pressing F4 in PCManFM[-qt], missing dependency => pressing F4 in PCManFM[-qt] try launching xterm instead of qterminal, wrong in conf file

Second thought, I should not jump gun so quickly:
That default may be correct for other desktops?

Hello,
I think that LXQt changed its settings since Mageia 7. It should now be 
Terminal=qterminal

So it should be fixed with pcmanfm-qt-0.16.0-5.mga8 in Core/Updates_testing repo!

You can test pcmanfm-qt-0.16.0-4.1.mga8 in Core/Updates_testing repo for mga8!

Assigning to QA now,


Advisory:
========================

This update fixes the default terminal who should be used making sure that qterminal is properly set as default instead of xterm.

========================

Packages in 8/core/updates_testing:
========================
pcmanfm-qt-0.16.0-4.1.mga8.i586.rpm
pcmanfm-qt-0.16.0-4.1.mga8.x86_64.rpm

Source RPM: 
========================
pcmanfm-qt-0.16.0-4.1.mga8.src.rpm

Assignee: pkg-bugs => qa-bugs
Version: Cauldron => 8

Hello,

I have tested: 

pcmanfm-qt-0.16.0-4.1.mga8.x86_64.rpm

With QA Repo and MGA8 LxQt VM.

I renamed /home/user/.config/pcmanfm-qt/lxqt/settings.conf, xterm is always opened with F4 instead qterminal

I created new user and qterminal is properly set as default instead of xterm with F4 pressed

So what I have to configure to enable it with user principal ?

CC: (none) => guillaume.royer

(In reply to Guillaume Royer from comment #17)
> Hello,
> 
> I have tested: 
> 
> pcmanfm-qt-0.16.0-4.1.mga8.x86_64.rpm
> 
> With QA Repo and MGA8 LxQt VM.
> 
> I renamed /home/user/.config/pcmanfm-qt/lxqt/settings.conf, xterm is always
> opened with F4 instead qterminal
> 
> I created new user and qterminal is properly set as default instead of xterm
> with F4 pressed
> 
> So what I have to configure to enable it with user principal ?

Applying update and creating a new user make qterminal being the default terminal app. This is OK.

So, @Guillaume, have you logoff/logon? pcmanfm-qt should have his preferences loaded in memory because it is still running, whereas your conf file is deleted...
Perhaps.

Or, existing affected users need to choose qterminal in pcmanfm-qt configuration UI.

(In reply to Aurelien Oudelet from comment #18)

 
> So, @Guillaume, have you logoff/logon? pcmanfm-qt should have his
> preferences loaded in memory because it is still running, whereas your conf
> file is deleted...
> Perhaps.
> 
> Or, existing affected users need to choose qterminal in pcmanfm-qt
> configuration UI.

Yes I have delete the config file and logoff/logon and even restart and no changes

First time ever running Lxqt. This should be interesting...

Created an Lxqt guest in Virtualbox, using the nonfree netinstall iso. On the first boot, ran the file manager, pressed F4, and xterm come up. So, problem is confirmed.

Installed qarepo, and used it to install the pcmanfm-qt update. No installation issues. Did a reboot to make sure any changes had been made. Tried F4 from the file manager again, and xterm still came up. 

Called on my old friend Mr Clunky to be a new user. Clunky knows even less about Mageia than I do, if you can believe it, but he has his uses. I had him log in and use F4 from the file manager, and qterminal came up. New default confirmed.

Logged back in as Tom, ran the file manager again, and used the gui to change the terminal setting to qterminal manually. Closed it, opened it again, and pressed F4. Qterminal came up.

All this would be expected behavior. The terminal choice is part of each user's individual configuration settings, and Mageia has a policy of not messing with those. So, while new users would have a default terminal of qterminal, existing users would have to change the setting manually.

Guillaume, deleting the config file might not work because of two possibilities: The default terminal setting *may* be somewhere else, or there may be a "config.old" (or something similar) file that is kept as a backup for the main config file, which is then used to recreate the config file you just deleted.

This update is OK for 64-bit. Validating. Advisory in Comment 16.

Keywords: (none) => validated_update
Whiteboard: (none) => MGA8-64-OK
CC: (none) => andrewsfarm, sysadmin-bugs

Advisory:
========================

This update fixes the default terminal who should be used making sure that qterminal is properly set as default instead of xterm, for new users added to
system after this update.
  
As our policy is to not remove user preferences, affected users should modify
settings in pcmanfm-qt preferences GUI.
========================

Packages in 8/core/updates_testing:
========================
pcmanfm-qt-0.16.0-4.1.mga8

Source RPM: 
========================
pcmanfm-qt-0.16.0-4.1.mga8.src.rpm


for ERRATA8

Keywords: (none) => FOR_ERRATA8, advisory
Source RPM: pcmanfm-1.3.1-3.git20210129.2.mga8.src.rpm, pcmanfm-qt-0.16.0-4.mga8.src.rpm => pcmanfm-qt-0.16.0-4.mga8.src.rpm

Added to https://wiki.mageia.org/en/Mageia_8_Errata#LXQt

Keywords: FOR_ERRATA8 => IN_ERRATA8

An update for this issue has been pushed to the Mageia Updates repository.

https://advisories.mageia.org/MGAA-2021-0068.html

Resolution: (none) => FIXED
Status: NEW => RESOLVED