I'm annoing with Gnome Software that can't launch complete and close after 3 short black screens.
This occures with Lite 18 but not with Lite 17.
Resinstall Gnome Software doesn't fix this issue. 
Any ideas ?
Try clean ~/.cache/gnome-software
You could try it with ending the Process. Open the System Monitor and look for the Process gnome-software and end it. Then open Gnome Software again.
Open a terminal with Ctrl Alt T and then write:
killall -9 gnome-software
gnome-software
Thx for feedback. Unfortunatly all sugestions failed.
Remove/install Gnome software too.
Do not have this issue with Lite 17, only Lite 18.
So strange
17 lite is a complete OS proven to work 18 just came out and is a work in progress if 17 lite works then thats the one you need. new hotness sometimes needs time to simmer a bit to come to its fullness have ya tryed core? seems 17 lite is good till June 2027 by then 18 lite should be farther along and maybe ready and working like 17
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What can i use instead ?
Do you have added third-party repositories or ppas?
Do you get errors when you enter
sudo apt update && sudo apt upgrade
in the terminal?
Does
journalctl -xe | grep gnome-software
list errors?
Can you launch gnome-software with sudo rights? It is not good to do this, just test if it works then.
sudo -i
and then enter
gnome-software
It should not make a difference but do your software sources for updates point to 'Main Server'?
For apt packages (.deb packages) you can use the synaptic package manager instead.
sudo apt install synaptic
It is.not as easy to use as gnome software and you can neither install flatpaks nor snap packages with it.
Or you can use the terminal to install packages. The terminal works for all package formats.
Was it a fresh install of Zorin 18.1 Lite or an Upgrade from previous Zorin versions?
Appreciate your help.
Apt update/upgrade is fine
I'm not linux power user enough to understand th result of the first command prompt
ordinateur@ordinateur-SQ45S70S:~$ journalctl -xe | grep gnome-software
juin 27 09:20:02 ordinateur-SQ45S70S dbus-daemon[536]: [system] Activating via systemd: service name='org.freedesktop.fwupd' unit='fwupd.service' requested by ':1.79' (uid=1000 pid=2118 comm="/usr/bin/gnome-software --gapplication-service" label="unconfined")
juin 27 09:20:02 ordinateur-SQ45S70S dbus-daemon[536]: [system] Activating via systemd: service name='org.freedesktop.PackageKit' unit='packagekit.service' requested by ':1.79' (uid=1000 pid=2118 comm="/usr/bin/gnome-software --gapplication-service" label="unconfined")
juin 27 09:20:10 ordinateur-SQ45S70S gnome-software[2118]: Failed to realize renderer of type 'GskNglRenderer' for surface 'GdkX11Toplevel': OpenGL ES 3.0 n’est pas pris en charge par ce moteur de rendu.
juin 27 09:20:18 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 4:1:fdc5f8fd, in gnome-software [2118]
juin 27 09:20:33 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] gnome-software[2118] context reset due to GPU hang
juin 27 09:20:40 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 4:1:fdc5f8fd, in gnome-software [2118]
juin 27 09:20:54 ordinateur-SQ45S70S kernel: Fence expiration time out i915-0000:00:02.0:gnome-software[2118]:1842!
juin 27 09:20:55 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] gnome-software[2118] context reset due to GPU hang
juin 27 09:20:55 ordinateur-SQ45S70S gnome-software[2118]: Only 0 apps for recent list, hiding
juin 27 09:21:01 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 4:1:fdc5f8fd, in gnome-software [2118]
juin 27 09:21:17 ordinateur-SQ45S70S kernel: i915 0000:00:02.0: [drm] gnome-software[2118] context reset due to GPU hang
And the second one:
ordinateur@ordinateur-SQ45S70S:~$ sudo -i
root@ordinateur-SQ45S70S:~# gnome-software
Entity: line 1: parser error : xmlParseEntityRef: no name
.
Regularly updated with the same fixes, Chromium patches, and security &
^
Entity: line 1: parser error : xmlParseEntityRef: no name
.
Regularly updated with the same fixes, Chromium patches, and security &
^
06:26:58:655 Gsk Failed to realize renderer of type 'GskNglRenderer' for surface 'GdkX11Toplevel': OpenGL ES 3.0 n’est pas pris en charge par ce moteur de rendu.
06:27:45:976 Gs Only 0 apps for recent list, hiding
Abandon
root@ordinateur-SQ45S70S:~#
Still the same issue in the end at this time when launching Gnome Software.A first and a second short black screen then the app closes after a third one.
Thank you 
What graphics card(s) do you have? What are your hardware specs (brand, model, CPU, RAM of your pc)?
Do you only have problems with gnome-software, but not with other apps?
I'm wondering if it could help to launch gnome-software from terminal with
GSK_RENDERER=gl gnome-software
or
GSK_RENDERER=cairo gnome-software
But I'm at a loss at the moment. Unfortunately, I don't have enough experience to solve this problem.
1 Like
Great !
Gnome sowtware launch with yout second cmd 
GSK_RENDERER=cairo gnome-software
Really appreciate your help, Thank you !
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Glad to hear that it works now!
Sorry, I don´t know how to explain that. I only know that these older renderers help with old hardware.
You can edit the .desktop file of gnome-software so that it always launches this way and you don´t need to use the terminal to launch it. If you also have problems with other gtk4 apps, you can also set an environment variable at ~/.profile with GSK_RENDERER=cairo globally for all gtk4 apps by adding the line export GSK_RENDERER=cairo at the end of that file.
To edit the desktop file right-click on the Zorin menu > edit menu
Go to system > software or software and change the command to
env GSK_RENDERER=cairo gnome-software %U
and then save it .
Here I found some informations about renderer:
Edit: I have posted a screenshot of the launcher properties in Zorin 18.1 core because I overlooked that you are on Lite, but the command is the same for the Lite version. Here you see how it looks in Zorin 18.1 Lite:
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