Display problems with Clearcase

LCD screens may experience subpixel rendering problems with clearcase enabled, e.g. letters being only partially displayed and menu entries no longer completely readable.

In such cases, LF‑ET offers several options for adapting font rep­re­sen­ta­tion.

Up to Java 1.6

In the LF‑ET.ini file, normally no value is assigned to the LookAndFeel.Font.UseSystemFontSettings key.

The problem can be solved with the value LookAndFeel.Font.UseSystemFontSettings = gasp in many cases.

From Java 1.7

Here the problem can be solved with an additional VM argument in the startup script Dawt.useSystemAAFontSettings=gasp

It is best to create a copy of the startup script lfet.bat with this parameter, which is then used to launch LF‑ET, for example when working with notebook and LCD screen.

You can see which Java version is in use via Help> Info> Details> System Properties> java.runtime.version in LF‑ET.

gasp is just one of the possible values; however, it solves the problem well in many cases. If the font rep­re­sen­ta­tion is still unsatisfactory, you can achieve a better rep­re­sen­ta­tion with another key value. Here is the list of possible key-values:

  • off, false or default

  • on

  • gasp

  • lcd or lcd_hrgb

  • lcd_hbgr

  • lcd_vrgb

  • lcd_vbgr