Re: Fedora 9 vs JTable problems.

Nigel Wade <>
Tue, 26 Aug 2008 15:32:19 +0100
Martin Gregorie wrote:

I have a pair of Java programs that use JTable to display lists of
database content. These run under Redhat Linux Fedora 8 in the Java 6 SE
edition 1.6.0_05.

If I login from the host's console everything works as expected, but if I
login via ssh with X11 forwarding from a laptop running Fedora 9 and run
the applications, then scrolling the lists quickly turns them into rows
of black, unreadable 'Chinese writing' as the glyphs in each row are
overwritten without being cleared first.

The problem doesn't occur if I use an ssh login from an old laptop
running Fedora 1.

- has anybody else seen this problem?

I have never seen that problem on any Linux/Java combination I've used.

- is it confined to Fedora 9 (and probably the version of X.11 -
  xorg-x11-server or has it been seen
  under other OSes or Linux distros?

- is there a known fix?

That certainly sounds like a local X server or display driver problem. It
probably isn't refreshing correctly. Do you have any options turned on with
regard to local caching in the X server, backing-store or save-unders?

Are you able to run the application locally on the Fedora 9 box? Does the same
problem manifest itself there?

I don't have any locally installed Fedora 9 boxes so can only test with a LiveCD
version. I don't see the problem you do. However, I probably have different
video hardware, drivers, X11 version, Java version etc. The video driver is the
generic "intel" one, X11 is, Java on the remote system is 1.6.0_07.

Nigel Wade

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