I have an old X application provided as a part of a complicated signal processing package. The application resides on the display-less server, and clients having different X-servers connect to it.
On old linux client systems, such as RHEL5, application draws fine, but on modern linux client systems, like RHEL6, Centos5, Ubuntu10 drawing is flawed - windows are blank, or not refreshing, or garbled, or have empty squares behind the previously obscured parts.
Problems partially perished when X server was tuned to use the BackingStore option, but that was only the minor improvement. How can I troubleshoot the application to make it draw the windows contents properly? Any specific extensions and/or workarounds must be enabled? Any old X bugs/specifics must be "supported"?
EDIT: I have uploaded a dump of
xdpyinfo of a working client here: http://pastebin.com/W0WHQ8hx and non-working client here: http://pastebin.com/X49c6ckW. Looks like the major difference is in
PseudoColor visuals existing on working client and absent on non-working client, but I'm not sure if that matters.