Hi, at my company we have a Java UI with two separate windows. From the main window a second one is opened on a different monitor. X is configured to have a separate display id for each monitor (zaphodhead). This configuration worked quiet well for a couple of years on SLES11 machines with different NVidia cards and Java versions. With the same NVidia cards and the same Java version (but a newer X server version) it doesn't work on a CentOS or Fedora linux. The fonts on the second window seem to be transparent.
We tested different Java versions, Intel and NVidia drivers and Window Manager. I have written a little Java demo UI which reproduces the problem. Please take a look at the following repository where i placed the code, some screenshots and the configurations we tested. https://github.com/f4n/ZaphodHeadsDemoUI Do you have any ideas what we are missing in our xorg.conf? Or is the zaphodhead mode discontinued? Do you think it's a Java problem even if the same Java version is working on an older X? With xrandr/xinerama the UI works fine but we have the problem to place different applications on the correct monitor. I know about the -geometry option but not all applications support this (like firefox), wmctrl works for firefox but not with xeyes (for example). Is there a common or better way? Kind regards, Fabian
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