I am running Lubuntu 18.04 on my computer. I was curious and accidentally changed the desktop environment from lxde to lxqt in the login screen. I don't have lxqt installed. It shows me a black screen . Please help me to change back to lxde
put on hold as off-topic by DK Bose, user535733, George Udosen, N0rbert, Melebius Aug 14 at 9:27
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Bug reports and problems specific to development version of Ubuntu should be reported on Launchpad so that developers can see, track and fix these issues." – DK Bose, user535733, George Udosen, N0rbert, Melebius
There shouldn't be any
lxqt session in the login screen unless you've done something which you haven't reported.
The default choices are:
- Lubuntu Qt session
The contents of
[Desktop Entry] Name=Lubuntu Qt session Comment=A specific Lubuntu session using Qt Exec=/usr/bin/startlxqt Type=Application
comes up empty.
And when a user chooses to login with
Lubuntu Qt session, the following window pops up:
The only option is to click
Okay after which the system crashes.
In my opinion,
Lubuntu Qt session shouldn't have been present at all. It just doesn't work. You most probably will have to reboot as suggested by Panther in a comment to your question.
When you do reboot and reach the login screen, carefully click on the image to the left of
en_US (or whatever language choice you have) and carefully choose
Lubuntu because if you don't the likelihood is that you'll again end up with the
Lubuntu Qt session because the last choice is remembered.
Once you're safely logged in, if you want to ensure you never accidentally click on the
Lubuntu Qt session again, open your terminal and run the following commands:
cd /usr/share/xesssions sudo rm QLubuntu.desktop
The next time you login, you won't see
Lubuntu Qt session as an option.
Update This issue has been addressed and a fix is committed: https://bugs.launchpad.net/ubuntu/+source/lubuntu-default-settings/+bug/1786602/comments/2