I’m not sure if I mean “panel” in the title of this message. What I’m talking about is the area that starts with the OpenSUSE menu, then has the selector for the screens, then the quick launch buttons and finally the time and date. If it is not called the “panel” please forgive me while I refer to it as the panel.
Since updating there is a rectangular region in the bottom center of the panel which is a black rectangle. This is annoying.
To work around the problem, I use the menu to go to: Menu:Settings:Configure Desktop:Hardware:Display and Monitor:Compositor
The Compositor that is selected is OpenGL3.1 . I change this to OpenGL 2.0 and click APPLY.
The black rectangular region is now replaced with the proper display.
Then, to get the better looking icons and display I change the compositor back to OpenGL3.1 and now the panel is displayed totally correctly.
So, my question is what do I change to make the “panel” display correctly on boot?
My video card is GeForce GTX 750 and my monitor is a ViewSonic VA2431.
> So, my question is what do I change to make the “panel” display> correctly on boot?
What I would try if it was mine:
1-log out of plasma
2-login on vtty2
3-open mc
4-navigate to ~/.config/kwinrc
5-delete everything that follows Compositing}
6-navigate to ~/.cache
7-delete everything that looks Kwin- or Plasma*-related
8-check to see if fixed
Evolution as taught in public schools is religion, not science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
…this bugs me since I upgraded some 42.3 to 15.0 some weeks ago, but deleting some stuff as described in the post above didn’t help here. Any other help on this? Highly appreciated!
You could create a new virgin test user and login as that user to see if the problem occurs. If not, there’s probably something that needs to be deleted that you didn’t delete. It may be that after deleting you should reboot instead of logging right back in, to be sure nothing bad erroneously remains cached.
Removed the whole .cache and in /.config/kwinrc there is nothing related to [Composition]. Reboot an same again.
The panel is not black it’s transparent and I can see the desktop background color over the full width of the screen for 2-.3 mm at the bottom of the screen and 3-4 mm on right end of the panel. Weird…
OK, next try. Removed the panel and added fresh panel. Looked good, but Application Launcher was nonfunctional. Reboot, panel looks good, but on resizing the window the same background-colour border at bottom and right of panel is back. unbelievable.
Here’s what I did that solved it.
After exiting the KDE session, I logged in as root into a terminal.
Went into my home directory and opened the file /home/mark/.config/kwinrc
I deleted the line that said [composting]
and the lines after that which were in the same section.
Then edited /home/mark/.cache
I deleted all files that appeared to have anything to do with kwin or plasma
Logged out and logged back into a KDE session. NO LUCK (****!)
From the menu I then went into Settings/Configure Desktop/hardware/Display and Monitor/Compositor
and I noticed that the [composting] check box was not selected. I used the mouse to enable “enable compositor on startup” (fill in check box)
Seems like either you got lucky, or there’s a bug in TW20190301’s Plasma. I tried to do what I suggested: “delete everything that follows [Compositing”, not including the label. That result was good, with compositing already enabled. I tried again but instead did as you did, deleting [Compositing} as well. After that, even after Ctrl-Alt-BS and restarting greeter with another Ctrl-Alt-BS, whole process thrice, when I opened top in Konsole (left open on previous sessions), kwin_x11 stayed locked on 100% CPU, the panel never showed up, and right clicking the desktop did nothing, while [Compositing] had been restored to kwinrc along with one following line, OpenGLIsUsafe=false. Finally I rebooted, and then the panel was back, along with working compositing.
