About software, technology and random things


High DPI / Font Scaling Display Problem With LibreOffice


When I installed LibreOffice on my Windows 10 notebook with 125% font scaling, I immediately noticed that the menu bar was somehow hiding behind the title bar and everything I clicked was recognized as clicked a couple dozen pixels above what I was actually pointing at.

This seems to be a known problem for LibreOffice with OpenGL and high DPI / high font scaling, maybe specifically in conjunction with my Intel HD Graphics / IGPU.

The fix is fairly easy but difficult to find out on your own:

  1. Make sure that no LibreOffice application is running.
  2. Open the LibreOffice OpenGL blacklist configuration file with a text editor, usually found at C:\Program Files\LibreOffice 5\share\opengl\opengl_blacklist_windows.xml.
  3. Inside the block enclosed by the <blacklist> tag, add the following block:
    <entry os="all" vendor="intel">
        <device id="all"/>
  4. Save and start a LibreOffice application to check.

This should do it!

Thanks for reading!



Hiding the Closing Button (X) on the Firefox Add-on Bar


Since the introduction of Firefox 3 or 4 (I don't quite remember) and the removal of the status bar I have liked to use the Add-on bar instead. In the newer versions of Firefox, however, that Add-on bar comes with a closing button, an X on the very left.

Unfortunately, there is no built-in option to disable that particular button. Right-clicking and "Customize ..." doesn't allow moving or removing that button either.

After searching the web for a while, I stumbled upon a Google Groups thread:

In that thread, Chris Ilias gave a simple solution (thank you!):

  1. Go to your Firefox profile directory. For that, just enter about:support in your URL bar (or click on Firefox => Help => Troubleshooting) and click on the "Open Containing Folder" button next to "Profile Directory".
  2. Close Firefox. (So maybe it would be better to continue reading these instructions beforehand and/or copy them into a text editor. 🙂 )
  3. Enter the subfolder "chrome" in the profile directory.
  4. Open the file "userChrome.css". If it does not exist, copy "userChrome-example.css" and rename the copy to "userChrome.css".
    If you are using Notepad, you won't be able to see line breaks / new lines. Therefore I recommend using a program that can interpret these kinds of line breaks, for example TextPad, Notepad++ or even WordPad, which comes with Windows itself.
  5. Add the following line to the file:
    #addonbar-closebutton { display: none }
  6. That's it! Save the file, start up Firefox again and enjoy the Add-on bar without a closing button!

These instructions were written for Firefox 11, but they should stay viable for the next couple of versions as well.

I hope this was of any help to you.

Thanks for reading!

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