I upgraded KDE4 on my openSuSE 12.2 system and since then I have a problem viewing PDF documents. Everytime I try to open a PDF document, I get the following message in a terminal and in an okular dialog:

Code: Select all

okular(12308)/okular (app) Okular::Document::openDocument: No plugin for mimetype '"application/pdf"'.

Which course does okular take to determine the backend? I don't see the PDF backend in the settings section either. I do have/see ebup, ps, txt, odt etc. Poppler is installed (pdfinfo gives correct information). Any help/pointer is very much appreciated, because okular is my choice of PDF viewing. In case more information is needed, please let me know. I can certainly provide it.

Here the version info:

Code: Select all

thb@thb-nb:~> okular --version
Qt: 4.8.5
KDE Development Platform: 4.11.2
Okular: 0.17.2


try the following command: /usr/bin/update-desktop-database

Do the files /usr/share/kde4/services/okularPoppler.desktop and /usr/share/kde4/services/libokularGenerator_poppler.desktop exist?

bcooksley wrote:Do the files /usr/share/kde4/services/okularPoppler.desktop and /usr/share/kde4/services/libokularGenerator_poppler.desktop exist?

Yes, they both exist as part of package okular-4.11.2-5.1.x86_64

google01103 wrote:try the following command: /usr/bin/update-desktop-database

Running it (as root) does not make any difference.

does Okular work for a new user?

google01103 wrote:does Okular work for a new user?

Nope On a complete new user I see the same error. A good question though.

I'd uninstall all the Poppler (I have 5 installed) and Okular packages and then reinstall

Looks like okular searches for a mimetype of "application/x-pdf" which it cannot find. I am not a xdg/desktop/mime-type expert at all, so please be patient with me. Using a simple

Code: Select all

mkdir -p ~/.local/share/mime/application
ln -s /usr/share/mime/application/pdf.xml ~/.local/share/mime/application/x-pdf.xml

solved the problem for me so far, though I know it's just a hack which I actually want to get rid of again. Strange enough, kmimetypefinder shows this:

Code: Select all

thb@thb-nb:~> kmimetypefinder mozilla.pdf
application/pdf
(accuracy 100)

and ktraderclient includes both x-pdf and pdf.

Code: Select all

thb@thb-nb:~> ktraderclient --servicetype okular/Generator | grep ServiceTypes
ServiceTypes : 'okular/Generator - application/postscript - image/x-eps'
ServiceTypes : 'okular/Generator - application/x-dvi'
ServiceTypes : 'okular/Generator - image/fax-g3 - image/g3fax'
ServiceTypes : 'okular/Generator - application/x-chm'
ServiceTypes : 'okular/Generator - image/bmp - image/x-dds - image/x-eps - image/x-exr - image/gif - image/x-hdr - image/x-ico - image/jp2 - image/jpeg - video/x-mng - image/x-portable-bitmap - image/x-pcx - image/x-portable-graymap - image/png - image/x-portable-pixmap - image/x-psd - image/x-rgb - image/x-tga - image/tiff - image/x-xbitmap - image/x-xcf - image/x-xpixmap'
ServiceTypes : 'okular/Generator - application/prs.plucker'
ServiceTypes : 'okular/Generator - application/vnd.oasis.opendocument.text'
ServiceTypes : 'okular/Generator - application/oxps - application/vnd.ms-xpsdocument'
ServiceTypes : 'okular/Generator - application/x-fictionbook+xml'
ServiceTypes : 'okular/Generator - text/plain'
ServiceTypes : 'okular/Generator - application/x-pdf - application/pdf - application/x-wwf'
ServiceTypes : 'okular/Generator - image/vnd.djvu'
ServiceTypes : 'okular/Generator - application/epub+zip'
ServiceTypes : 'okular/Generator - image/tiff'
ServiceTypes : 'okular/Generator - application/x-cbz - application/x-cbr - application/x-cbt - inode/directory'

As the non-expert I have no idea what to look into next. I already got a copy of okular from git but the relecant desktop files of the poppler backend are identical to the ones I have on my box.

wouldn't removing then re-installing all the related rpm's reset/reinitialize the mime types?

Maybe, but there are just too many (116) dependencies on the poppler lib and I don't want to screw around with this system too much.

you could try just reinstalling the Poppler libs

I think this problem is caused by the fix for https://bugs.kde.org/show_bug.cgi?id=321706 .

Should be fixed in 4.11.3 then:
https://projects.kde.org/projects/kde/k ... d89ec6bfcb

Seems to be related (from what I can tell). So it's a matter of waiting and trying again. Until then, my workaround seems to do the trick.Thanks all for helping out.

wolfi323 wrote:Should be fixed in 4.11.3 then:
https://projects.kde.org/projects/kde/k ... d89ec6bfcb

I just noticed that this patch is included in openSUSE's packages since 2 days ago. So maybe this actually caused your problem?
There's a followup patch already though:
https://projects.kde.org/projects/kde/k ... 050c90ea99

There's a similar thread in the openSUSE forums as well, btw: https://forums.opensuse.org/english/get ... ost2592560