Garbled video from Xserve

Question

I currently use ARD as part of the management of a cluster of nearly 50 Xserves, and it works great on all but one.
The one is the newest, a dual 2.3 running 10.4 Server with all the updates. When I am controlling or viewing it at the login window, looks great. Type in username and password, and WHAMMO, video is all garbled. It looks almost as though its changing resolution without ARD realizing it.
Here's a couple screenshots: http://bioinfo.med.unc.edu/~ianmeyer/problemsnap1.tiff (working at the login screen); http://bioinfo.med.unc.edu/~ianmeyer/problemsnap2.tiff (after logging in)
Any ideas on what I can do to resolve this?

Answer 1

I think we've found a fix:
Using ARD, copy cscreen to the directory of your choice on the server (we used Users/~, where ~is the name of the administrator account).
Again using ARD, send the UNIX command
/Users/~ cscreen -d 24 -r 65 -x 1024 -y 768
You should get a results message to the effect that the parameters have been reset as closely as possible to your specs. The parameters above change the color depth to 24 bits from 32, the refresh rate to 65KHz (not sure if this is necessary), and the screen dimensions to 1024x768.
We found that we had to do this for root as well, sending the command as root from ARD.