Possible bug. Xemacs screen corruption

[David Kastrup]

Dima Kogan <dkogan at cds.caltech.edu> writes:

> For several months now I've been experiencing screen corruption
> problems in Xemacs running in X.

> Remote-displaying an Xemacs session from the affected computer
> doesn't exhibit the problem. Running on the affected computer shows
> the problem both with the fglrx and the vesa graphics drivers.

For what it's worth: scrolling in partly obscured windows leaves bad
artifacts on Emacs when using the Radeon stuff.  So it might just be
that the driver is screwed, or that both Emacs and XEmacs manage to
exercise something that no other driver implements.

Amusingly, the effect on your screenshot looks very much like that I
see on Emacs.  It would be my guess that the source area after a
partial scroll in the window does not get cleared.  Since the display
engines of Emacs and XEmacs are probably not much alike anymore, it is
interesting that one does not see this sort of corruption in other
applications.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum