[Bf-committers] [blender 2.26cvs + XFree430] Total machinge lock

[Meino Christian Cramer]

Hi,

 I sent this mail to two mailing lists since I dont know what is
 producing this behaviour and where the bug is burried...

 What happens ?

 I use a recent cvs checkout of Blender CVS (2.26++) together with the
 XFree 4.30 release. Furthermore I compiled the Linux 2.4.20 kernel
 with DRM/DRI module support for my ATI Radeon 7500 (built by
 Sapphire). After installing the kernel I compiled the drm-kernel
 module for Linux in the XFree430 source tree and overwrite the
 according module in /lib/modules/2.4.20/kernel/driver/char/drm/...
 Reboot.

 DRI/DRM is shown as working in the XFree logfile. 

 Now...whhen using Blender with DispWin enabled (rendering shown in
 extra window) crashes Blender (this was reported before).

 A friendly hacker of the bf-blender mailing list sends me a
 workaround: I should "export RADEON_NO_VTXFMT=1" right before
 starting blender.

 Now Blender could display its renderings in an extra window again.

 (wait...now it comes..!)

 BUT (and this is a very *BIG* "BUT"):

 When using PovAnim for Blender 2.26 (which do work right for me
 before this workaround) together with "RADEON_NO_VTXFMT=1" the
 results are very heavy:
 As soon as I press "ALT-P" to start the script, my Linux box 
 freezes hard at once -- I had to reboot.

 Removing  RADEON_NO_VTXFMT=1 will make the script work but now
 blender crashes while trying to open an extra window.

 Sigh.

 Since I have no access to my box right after a freeze I cannot
 provide any logfile or something like that. If one have an idea how
 to provide more help to fix this nasty bug...let me know and I will
 try help more.

 Kind regards,
 (slightly frustrated)
 Meino