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Running Arch on a Thinkpad X220 with Intel video. The installation is about 2 weeks old. Everything was fine until last reboot. Now KDE has a few problems including Kickstart menu is slow highlighting item on mouse hover, the splash screen does not disappear and, if not using a splash screen, the desktop wallpaper is not shown. Switching desktop wallpapers has no effect. The taskbar works, but not well (for example, the applications are mixed up; click Konsole in taskbar and Firefox is focused).
I tried removing ~/.config/plasma-org.kde.plasma.desktop-appletsrc
I tried changing various KDE settings including the splash screen (none or normal) and various activities settings.
I tried reverting any small settings or configuration changes I could remember making.
None of what I tried had any effect on this issue.
The only thing I had done prior to the problem was "sudo pacman -Syu". It completed with no errors. I rebooted and noticed the issue. Prior to this pacman upgrade I had check journalctl and no seen any errors.
The only error I see in dmesg is related to a kactivitymanage segfault. I thought that might be the problem, so...
I downgraded my entire Arch system to 2016/03/14 (a week ago), and I downgraded the kernel to 4.4.3-1-ARCH (which is the first one I installed and with which my system was working fine).
However, the problem remains. It is exactly the same after downgrading everything to a week ago. Strangely, a week ago my system didn't have this problem.
Here is what dmesg shows after the downgrade:
[ 220.219586] kactivitymanage[711]: segfault at 7ff2727c2cd0 ip 00007ff2580c1261 sp 00007ffeecf1fcd8 error 4 in libQt5Sql.so.5.5.1[7ff2580ad000+3f000]
[ 299.243818] kactivitymanage[962]: segfault at 7fa00dd17cd0 ip 00007fa00004e261 sp 00007ffe9011b648 error 4 in libQt5Sql.so.5.5.1[7fa00003a000+3f000]
I get the above message after logging out of the desktop.
EDIT: SOLVED
original title: "KDE (kf5) missing desktop wallpaper, splash screen doesn't disappear"
Last edited by MountainX (2016-03-21 17:36:37)
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i had the same problem when trying qt 5.6 and Plasma 5.6 from kde-unstable... try deleting ~/.cache
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i had the same problem when trying qt 5.6 and Plasma 5.6 from kde-unstable... try deleting ~/.cache
Thanks for the idea. Unfortunately, it didn't help in my case.
You gave me the idea to also try deleting ~/.compose-cache ** too, but that didn't make any difference either.
Any other ideas?
**
BTW, I used this tip when I installed initially. I hasn't given me any trouble before (and I also use it on another computer without any problems).
KDE - ArchWiki
https://wiki.archlinux.org/index.php/KD … ng_effects
Speed up application startup
User Rob described a "magic trick" on his blog to improve application start-up time by 50-150ms. To enable it, create this folder in your home:
$ mkdir ~/.compose-cache/
It can produce freezes under heavy io. To avoid this, also do:
$ ln -sfv /run/user/$UID/ /home/$USER/.compose-cache
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Solved, thanks to the fantastic Arch wiki. It took me a while to realize that this was an SNA acceleration issue, but once I had that realization, the solution was right out of the wiki.
Intel graphics - ArchWiki
https://wiki.archlinux.org/index.php/in … leshooting
Troubleshooting
SNA issues
SNA is the default acceleration method in xf86-video-intel. If you are experience issues with SNA (e.g. pixelated graphics, corrupt text, etc.), try using UXA instead, which can be done by adding the following line to your configuration file:
Option "AccelMethod" "uxa"
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