Blender menus render extremley slow with ati r300 card

[onny]

Hi,
i'm using Ubuntu 10.04 with the newest Ati opensource-driver 6.13.0. I have a Radeon 9800 Pro graphic-card (R350).
When i start Blender 2.49, the 3D-preview-window works quite well, but the response-time of the menus is extremley slow! It does take a few seconds to just click on the "quit"-menu-item :/
Well, there must be some problems with opengl-rendering ... Hope someone has a hint!
Thanks!

[mclay (michael-j-mclay)]

Bug reports about blender should be posted on the blender.org website <http://projects.blender.org/tracker/?group_id=9>. The https://bugs.launchpad.net/blender bugtracker was set up for testing as a possible replacement for the blender website. If you repost your bug on the blender.org website please let us know which of the bug trackers you found easier to use.

[madbiologist (me-again)]

Firstly we need to verify that hardware accelerated direct rendering is working. Please post the output of "glxinfo |grep render" (without the quotes).

Does booting with the nomodeset or radeon.modeset=0 kernel parameters help?

[onny (onny)]

@madbiologist: glxinfo says:
direct rendering: Yes
OpenGL renderer string: Mesa DRI R300 (R350 4E48) 20090101 x86/MMX/SSE2 TCL DRI2

After i booted ubuntu with the both kernel-parameters, the blender menus were a bit faster whereas the whole blender-ui was slower and had a lot of graphical glitches (with compiz enabled). Without compiz it was faster and didn't have these glitches!

Well, is there a way to use Blender with modeset enabled?

@mclay: Launchpad is much easier to use! Besides that, the search-function on the blender.org-bugtracker is temporarily disabled, which makes it unusable :(

[jesterKing (jesterking)]

Unfortunately the temporary part has been already quite some time :/

Blender 2.49 still had front-buffer drawing code that poses problems for some cards and drivers.

I don't think that this will be fixed in 2.49 (or any theoretical 2.4x series bugfix release), but you should try a Blender 2.5 build.

Blender 2.5 has a different drawing approach in that everything is now drawn in backbuffer. Please try a build for Linux from graphicall.org (or create your own build if there is no prebuilt package available). If it doesn't readily work, try changing the drawing method in Blender user preferences > System

[jesterKing (jesterking)]

I'm assigning this to myself, but I'm inclined to mark this as WONTFIX, since development effort has shifted 100% to Blender 2.5. As per my previous comment I think that you should find better performance there.

[madmed (medbelh)]

I had the same problem, my graphic card is ATI HD 3430. I removed all the drivers and installed catalyst 10.7 today. All problems are gone now.

[Nomax (nomax)]

Unfortunately, latest Catalyst drivers don't work on Radeon X2100 and older cards.