Lost MIME data in KDE Plasma5 Tumbleweed x64

English Install/Boot/Login
#1

Usualy I just click on a file in Dolphin or Firefox (from the download menu) and it opens. Somehow this does not work anymore.

For every file-type it says that there is no app installed and if I go to the “open with” menu, this is empty. I can however type okular manualy and the file opens. But only once. The information is not stored.

If I go to the system configuration panel of kde and to file-associations I can see all MIME data. The list there seems fine.
In firefox the file-type-action menu however does not show any app-entry, same as the “open with” dialogue of dolphin.

I already tried a new user and re-installing all packages containing the keyword MIME etc. But the functionality seems lost in space…
help (beyond re-install the whole system) would be very much appreciated.

thx tomme

#2

Does it work in Plasma5’s folderview applet?

From your description, the problem seems to affect KDE4 only. Dolphin is still KDE4 based, and Firefox might also be affected because of its KDE4 integration.
The “system configuration panel” is the one for KF5/Plasma5 though, so it works as expected.

My first guess would be a broken/corrupted “system configuration cache” (sycoca). That one contains amongst other things a list of all installed applications and what mimetypes they support, to speed up the display of the application launcher and the “Open With” menu.
That the problem persists with a fresh user account would probably rule that out, but still: try to rebuild that cache from scratch, by running “kbuildsycoca4 --noincremental” (as user).
If you get warnings, that’s quite normal, but you might still post the output in case it doesn’t help. Maybe it would point to the problem.

#3

thx
folderview works fine
cache-rebuilding and re-installing sycoca does not help :frowning:

the output

 kbuildsycoca4 --noincremental 
kbuildsycoca4 running... 
kbuildsycoca4(1863): "applications.menu"  not found in  ("/home/bv3/.confi
g/menus/", "/etc/xdg/menus/")  

kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-excel.sheet.binary.m
acroEnabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-excel.addin.macroEna
bled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-powerpoint.slideshow
.macroEnabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-excel.sheet.macroEna
bled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-powerpoint.presentat
ion.macroEnabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-word.template.macroE
nabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-excel.template.macro
Enabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-powerpoint.template.
macroEnabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-word.document.macroE
nabled.12"  
kbuildsycoca4(1863) KMimeTypeRepository::parents: "/usr/share/mime/subclas
ses"  refers to unknown mimetype  "application/vnd.ms-powerpoint.slide.mac
roEnabled.12"
#4

Make sure you have desktop-data-openSUSE installed.
If that isn’t installed by default any more (Plasma5 is patched by openSUSE to use a different applications.menu, so doesn’t need it), a bug report should be filed I suppose.

#5

This and then rebuilding the cache helped!
Thank you very much!