After upgrading our matlab server from etch to lenny, all matlab versions became unusably slow (we are running matlab in a xdmcp session).
After receiving a hint that this could be xcb related [3,4], I've done something similar as the ubuntu maintainer [1] and created libx11 packages _without_ xcb support [2]. This speeds up matlab user interface tremendously and more specifically the matlab benchmarks for 2D and 3D graphics with a factor 10 and more. Since I don't know wether these packages will cause regressions for other packages (In [3], people mention a.o. a dependency of the gnome window manager to xcb), I've played it safe, and extracted the packages manually on the server (now running matlab with LD_LIBRARY_PATH set). [1] http://people.ubuntu.com/~bryce/Testing/libx11/ [2] http://www.fmtc.be/debian/libx11/ [3] https://bugs.launchpad.net/xorg-server/+bug/185311?comments=all [4] http://www.mathworks.com/matlabcentral/newsreader/view_thread/160387 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org