Interesting. Note that in the 1.7 builds libotf is no longer preloaded, so step #2 will not be needed for those. --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu On Sep 18, 2012, at 8:47 AM, Dieter Blaas wrote:

Those who encountered lots of problems with the graphics when running chimera remotely

for example you receive error messages like this one:

X Error of failed request: GLXBadContextTag Major opcode of failed request: 153 (GLX) Minor opcode of failed request: 5 (X_GLXMakeCurrent) Serial number of failed request: 1352 Current serial number in output stream: 1352

might be interested in the following solution:

1) install VirtualGL (http://www.virtualgl.org/) on both PCs 2) outcomment the indicated lines in the 'chimera' startup script 3) connect to the server by using 'vglconnect' 4) start chimera on the server with 'vglrun chimera'

that's it!

if [ -z "$nogui" ] then case "`uname -s`" in Linux) # preload our C++ runtime to avoid # ATI graphics driver bug # LD_PRELOAD=libotf.so <<<<<<<<< # export LD_PRELOAD <<<<<<<<< if test -e "$CHIMERA/bin/python2.7" then python="$CHIMERA/bin/python2.7" else

in those cases where chimera works without this trick you might still see a substancial improvement in transmission speed!

Best, Dieter

-- ------------------------------------------------------------------------ Dieter Blaas, Max F. Perutz Laboratories Medical University of Vienna, Inst. Med. Biochem., Vienna Biocenter (VBC), Dr. Bohr Gasse 9/3, A-1030 Vienna, Austria, Tel: 0043 1 4277 61630, Fax: 0043 1 4277 9616, e-mail: dieter.blaas@meduniwien.ac.at ------------------------------------------------------------------------

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