{SOLVED} plasma start to blank screen

[nwtmg]

Hello,
Installed plasma using task-plasm5. Now boots to blank screen.

from uanme -a

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Linux xxxxxxxxx 5.15.82-desktop-1.mga8 #1 SMP Thu Dec 8 21:42:04 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux


I must be missing some files. Thanks,

[doktor5000]

Some more information would be appreciated. What display manager do you use, sddm?
And what about the logs for such a boot, what does

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journalctl -ab

say as root and where does it stop?
Best login as root into a different tty using e.g. Ctrl+Alt+F2 then run

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journalctl -ab > /tmp/journal.log

and later attach the resulting file /tmp/journal.log here.

Apart from that, did you have a working graphical environment installed beforehand, and if so, which display manager and which desktop environment ?

[nwtmg]

Quick reply on the display manager, lightdm. I have been using xfce successfully andI thought I would try plasma.

[doktor5000]

So does the blank screen happen after you select plasma in lightdm, or before - meaning lightdm does not start successfully anymore now?

[nwtmg]

After I have selected the plasma an image with a large k appears then the wallpaper image appears. Neither right click or left click is accepted. No menu and no input. I have to hard boot.

[nwtmg]

Should I be using the display manager sddm. How would I select that. I could try that first and see if it fixes the problem.

[doktor5000]

Did you select the wayland session for plasma or the classic X.org session ? The former still is broken: https://bugs.mageia.org/show_bug.cgi?id=27296

It should start fine without sddm, altough there were some issues in the past with lightdm session handling.
But you can easily switch to another display manager like sddm by installing it, then running drakedm https://doc.mageia.org/mcc/8/en/content ... ml#drakedm will let you choose another installed one.
Then either reboot or use systemctl restart on the new display manager.

[nwtmg]

I used ctrl + alt and f1. Loged as root then ran journalctl -ab. Here is the output. The file is too big so will try attachment.

[doktor5000]

You may need to set a proper hostname, seems your box receives this via DHCP so the hostname changes after X startup, which is an issue:

[...]
Dec 28 14:26:11 golfLeisure NetworkManager[908]: <info> [1672237571.9251] hostname: hostname: using hostnamed
Dec 28 14:26:11 golfLeisure NetworkManager[908]: <info> [1672237571.9251] hostname: hostname changed from (none) to "golfLeisure"
Dec 28 14:26:11 golfLeisure NetworkManager[908]: <info> [1672237571.9257] dns-mgr[0x1c70270]: init: dns=default,systemd-resolved rc-manager=resolvconf
[...]

Use hostnamectl set-hostname your_new_hostname_here to set a proper hostname, and also add this to /etc/hosts, either manually or using drakhosts: https://doc.mageia.org/mcc/8/en/content ... #drakhosts


Apart from that, the log seems to show a regular login with an XFCE session, there's nothing about plasma in there.

[nwtmg]

Thanks for the info. I changed the hostname to localhost and rebooted back into a wallpapered screen. I cannot run the journallctl command from plasma because I cannot gain access to the prompt. What next?

[doktor5000]

What do you mean you cannot gain access to the prompt? Simply run any terminal from the application menu, and enter the command there.
Might help if you would describe what your current issue is, from your description it seems like plasma started normally, no ?

[nwtmg]

I can boot into xfce. From the menu I can run that command. When I try to boot into plasma I arrive at a desktop that only has wallpaper. There is no menu or right or left click. I have to press the power button to reboot. I just realized that I could perhaps run the cntrl plus alt plus f2 then run the journalctl. Is that something i could do. Hope this has cleared up any confusion. THanks.

[doktor5000]

I just realized that I could perhaps run the cntrl plus alt plus f2 then run the journalctl. Is that something i could do.

Sure, that would work.

[nwtmg]

Booted into plasma with wallpaper only response and no click events. Ctrl + alt + f2 then run the jounalctl command. Uploading result. Thanks for all your help.

[doktor5000]

It seems you're still having compiz installed, you should probably uninstall that or at least disable it. See https://wiki.mageia.org/en/Mageia_8_Errata#Plasma - this part here:

Compiz desktop effects is no longer compatible with Plasma. If you use it in Plasma on Mageia 7 then disable it in MAGEIA CONTROL CENTER : HARDWARE -> CONFIGURE 3D DESKTOP EFFECTS - before upgrade, and if you don't want Compiz for another desktop environment, uninstall it. After install/upgrade of Mageia, you find desktop effects at SYSTEM SETTINGS (slider icon in main launch menu) WORKSPACE -> WORKSPACE BEHAVIOR -> DESKTOP EFFECTS.

You can also try if you can disable it in the tty session via drak3d: https://doc.mageia.org/mcc/8/en/content ... tml#drak3d

[nwtmg]

Thank you for all your help in this matter. Disabling comiz fixed tha problem.