blender crashes in ubuntu

If i try to render my sculpted mesh in blender under ubuntu I get this error:

Ignoring Xlib error: error code 171 request code 149
Ignoring Xlib error: error code 171 request code 149
Ignoring Xlib error: error code 171 request code 149
Ignoring Xlib error: error code 171 request code 149
Segmentation fault (core dumped)

sup wid dat?
JF

i might not be able to help, but that also happens with me with my old tnt2 card with its driver installed…
does that only happen during rendering? what are your hardware specs?

Yup. Please give hardware and version info.
Until fairly recently, the version in the repos was 2.44. Your hardware, especially your video card and associated xorg driver will have some also. Maybe with this info someone can help.

Well ubuntu 7.10, amd64 4000+ cpu nvidia 7800gtx vid card, with nvidia driver. It does it when i try to add a multirez level on a model I have been working on for a while, but it doesn’t when i use a copy from an earlier save, that has me confused.It does it with 2.45, and all of my daily builds of 2.46 RC1 Just stared another model and it doesn’t happen at all multires and render work,?
JF