My platform:
- Ubuntu Linux 10.10 32-bit
- Intel dual Xeon 3.0GHz
- 4GB RAM
- Nvidia quadro 1400 workstation graphics card
- nvidia proprietary graphics drivers.
- Gnome desktop
- Blender 2.55
Normally I run XFCE desktop with the extra compiz based effects turned off, but I tried running Gnome with the normal compiz effects turned on and Blender 2.55 was REALLY slow. Unbearably slow. The 3d window, menus and the whole interface. But if I turn off the effects Blender is fine and very fast.
I tried starting Blender using the LIBGL_ALWAYS_SOFTWARE=1 option and that didn't change anything, only made it slower I think.
I searched around and asked around about this problem and could only find this post on Blenderartists.org where someone mentioned the same symptoms, but other people seemed to write it off as driver issues.
I'm not sure if this is a widespread issue or I'm experiencing something fairly unique. Some people might consider this a minor issue that can be fixed by turning off the compositor effects, however more and more people are going to be trying Blender with the compositor effects turned on already and won't accept the solution of turning them off as a solution.
http://blenderartists.org/forum/showthread.php?t=196793
Thanks.
Description
Event Timeline
Have you tried different window draw methods? You can set that in User Preferences > System in Blender.
Unable to confirm, I have used Blender 2.5 in Ubuntu 9.04 through 10.10 with compiz and this has never been a problem.
Blender runs fine here on ubuntu 10.10 with compiz turned on so I'm thinking that it probably really is a driver issue.
Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
Not a Blender bug, but matter of driver configuration, and potentially a matter of setting the right drawing method in Blender. Please report if you can find a way to get Blender run reasonably OK again.
BTW: Quadro was made by Nvidia to especially work good for 3D programs (tested with autodesk s/w etc). However, their linux drivers for Quadro somehow always had more issues reported with Blender than their Windows counterparts...
Nathan, I did try changing the window draw methods before I submitted the bug. Someone on the IRC channel recommended that. It didn't change anything.
Ton is probably right (Actually, I should probably say he is right). On my other workstations where I have desktop like graphics cards (non-quadro nvidias) I don't have this problem if I turn on the compositing. Ok, well I just wanted to submit the bug so that I could help out anyone else who might have it, but if its only affecting a 5 year old graphics card, I'm fine with it being closed. And I don't normally use compositing anyways.
Thanks for the help and great software. Blender rocks.
I just realized that I might need to restart Blender after changing the windowing mode, so I tried each of the window draw methods again, saving the defaults and restarting Blender each time. None of them brought it up even close to full speed, but the Overlap draw mode seemed to help the most, might be useful info for someone else who encounters this bug.