[Bug 306943] New: Broken font rendering in some applications

Nikos Chantziaras realnc at gmail.com
Mon Sep 17 17:44:31 BST 2012


https://bugs.kde.org/show_bug.cgi?id=306943

            Bug ID: 306943
          Severity: normal
           Version: 4.9
          Priority: NOR
          Assignee: unassigned-bugs at kde.org
           Summary: Broken font rendering in some applications
    Classification: Unclassified
                OS: Linux
          Reporter: realnc at gmail.com
          Hardware: Gentoo Packages
            Status: UNCONFIRMED
         Component: general
           Product: kde

It seems that some applications (for example krunner and ksnapshot) display
fonts in a somewhat broken manner. To demonstrate, I attached a screenshot of
krunner's "System Activity" in krunner_process_list.png. Look at how "Shared
Mem" is rendered, for example. And the same process list display, but through
"System Monitor" is in ksysguard_process_list.png. Notice how "System Monitor"
has correct font display.  I found out that I can trigger the same bug in
System Monitor if I launch it with:

  ksysguard -graphicssystem native

Then it looks like in screenshot ksysguard_process_list_native.png. Look for
example at how the word "Table" (in "Process Table") is rendered compared to
the previous screenshot.

Another application that has the same problem is KSnapshot.  And indeed, if I
launch it manually with:

  ksnapshot -graphicssystem raster

then the problem goes away.

In System Settings, in the Desktop Effects section's "Advanced" tab, I have
"Raster" set as the "Qt graphics system".  My Linux distro (Gentoo) also has
this set in the environment:

  QT_GRAPHICSSYSTEM=raster

It would seem that some KDE application ignore those settings.

Reproducible: Always

Steps to Reproduce:
1. Press Alt+F2 (or whatever shortcut you've set to bring up krunner.)
2. Click the "System Activity" button.
Actual Results:  
Fonts look weird.

Expected Results:  
Fonts should look the same as everywhere else.

Gentoo Linux 64-bit, KDE 4.9.1, Qt 4.8.3. The graphics driver doesn't seem to
affect this; the problem is there with the official NVidia driver, the AMD
Catalyst driver, and the open source xf86-video-ati driver.

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