Richard, Thanks for your help.  I intend to tackle the video problem tomorrow morning.  It seems that the driver might be the issue.  <div class="gmail_quote">On Feb 5, 2008 4:23 PM, Richard Doyle <<a href="mailto:rdoyle@islandnetworks.com">rdoyle@islandnetworks.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d"> On Tue, 2008-02-05 at 15:42 -0500, Patrick McKnight wrote: > Ah, good catch.  I am not sure about the driver (I cannot check it > right now because I am not in my lab).  If I specify the via driver in > the lts.conf file, I suspect it is using the stock xorg driver.  Is > that true? </div>Yes. <div class="Ih2E3d"> > If so, I think this might be the problem.  By the way, my server video > performance is horrible as well.  Perhaps that is the common thread. </div>Sounds likely. <div class="Ih2E3d"> > Is there a way to stick with the Gutsy install but use the via driver > from previous versions?  I know xorg is quite finicky about driver > compatibility but perhaps the versions are not so different in driver > specs. </div>As far as I know, your xorg drivers need to match your kernel, and each version uses a new kernel, so... With Feisty, we're using a driver compiled from source and the via binary, as described at: <a href="http://www.viaarena.com/Driver/via%20linux%20unichrome%20kernel%20driver%20source%20code%20installation%20guide%20v0%5B1%5D.83.gz" target="_blank">http://www.viaarena.com/Driver/via%20linux%20unichrome%20kernel%20driver%20source%20code%20installation%20guide%20v0%5B1%5D.83.gz</a> Unfortunately, there isn't anything comparable for Gutsy, and the openchrome, xorg, and unichrome open source drivers gave unacceptable performance, or at least I ran out of time to find a way to make any of them work. <div><div></div><div class="Wj3C7c"> > > Thanks for the questions.  They are leading me at least in a direction > to figure out the source of my problem. > > On Feb 5, 2008 3:11 PM, Richard Doyle <<a href="mailto:rdoyle@islandnetworks.com">rdoyle@islandnetworks.com</a>> > wrote: > >         On Tue, 2008-02-05 at 14:50 -0500, Patrick McKnight wrote: >         > Richard, >         > >         > Thanks for the quick reply and sorry about excluding >         relevant >         > information. > >         Were you using the default Via driver (the xorg version) in >         both >         instances? >         > >         > I am using 7.10 (Gutsy) now.  The install is the AMD64 >         version on my >         > server and I boot off a i386 image for my clients. > >         Log into the system console on the client, as root, and >         inspect the Xorg >         log (in our system it is named Xorg.6.log) for clues. See >         > >         > With respect to the drivers and kernel, yes, I suppose the >         via driver >         > changed from the Dapper ltsp install to the Gutsy Edubuntu >         ltsp >         > install.  I would not expect the driver to account for the >         extreme >         > difference but perhaps that is the case. > >         I agree, but only if you were using the xorg driver in both >         cases. The >         xorg driver works, but performanace is poor. In my experience, >         the only >         driver to provide decent performance is the proprietary >         version from >         Via, and that only with the pre-gutsy version. We've reverted >         to Feisty >         for this reason. > > > > >         -- > >         edubuntu-users mailing list >         <a href="mailto:edubuntu-users@lists.ubuntu.com">edubuntu-users@lists.ubuntu.com</a> >         Modify settings or unsubscribe at: >         <a href="https://lists.ubuntu.com/mailman/listinfo/edubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/edubuntu-users</a> > > > -- > Cheers, > > Patrick > </div></div>-- <div><div></div><div class="Wj3C7c">edubuntu-users mailing list <a href="mailto:edubuntu-users@lists.ubuntu.com">edubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/edubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/edubuntu-users</a> </div></div></blockquote></div> -- Cheers, Patrick ------------------------------------------ Patrick E. McKnight, Ph.D. Department of Psychology George Mason University MSN 3F5, 4400 University Drive Fairfax, VA 22030-4444 703-993-8292 (office) 703-993-1359 (fax) <a href="mailto:pmcknigh@gmu.edu">pmcknigh@gmu.edu</a> <a href="http://mres.gmu.edu">http://mres.gmu.edu</a>