Thanks all, Looks like the problem may have to do with my nvidia drivers. Compositing is Xrender, openGL doesn't work. No idea why (nvidia drivers 185, geforce 8400 gs)
Following up on a tip on the google search suggested in this thread, I added Option "FramebufferCompression" "false" to device section in xorg.conf. Then logged out and back in. This seems to have fixed the speed. For now. If it comes back, I'll try compiling a newer version or upgrading. Best, -Jose Jose Quesada, PhD. Max Planck Institute, Center for Adaptive Behavior and Cognition, Berlin http://www.josequesada.name/ http://twitter.com/Quesada On Sun, Jun 13, 2010 at 9:24 AM, Abdelrazak Younes <you...@lyx.org> wrote: > On 13/06/2010 00:27, Jose Quesada wrote: > >> Thanks Paul, >> >> It makes me sad when I face situations like this. LyX is a great tool, >> that should work well under linux (open source, qt, etc). >> > > Actually, LyX have been must faster on Windows than on Linux for a few > years now. This is probably because most of developers interested in metrics > and drawing stuff were on Windows. Probably also because Qt is faster under > Windows. > > > But what I >> find is the contrary. Obscure bug that I have no time to track (I know >> first hand this could be a time sink, going down the rabbit hole...). >> > > Not so obscure, it's obviously related to the outline pane. This pane uses > Qt a lot as opposed to the LyX working area. IIIRC there was some > performance fixes in 1.6.5 or 1.6.6 related to Qt4.4 or something. > > > Ubuntu version is pretty out-of-date (1.6.4). Looks like for this >> deadline I'll have to use plain latex, and hope somehow an update will >> fix the problem. >> > > First thing is to upgrade your Qt and LyX version. LyX-1.6.5 with Qt4.6 > (unbuntu 10.04) works fine. If you don't feel like upgrading your system, > there's always the option of compiling the latest LyX yourself, it's not > very hard. You don't even have to compile Qt, you can download a precompiled > SDK for Linux in Nokia's web site. Of course the whole process takes time > but compiling LyX on your system won't take much, maybe 10 to 20 minutes. > > Abdel. >
