[Dri-users] Radeon 9100 IGP Mobility hard lock

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Hi:
    Using the ati r200 cvs nightly of a day or two ago, I managed to get 
xorg-x11 (6.7.0) to recognize and set up 3d support for my Radeon 9100 
IGP Mobility card.  Kernel version is 2.6.7 (gentoo-r11)
    logfiles and glxinfo report everything good to go, but when I run 
glxgears, x immediately locks up solid--apart from mouse motion and the 
power key.  Everything that can be a module is, and I get this result 
whether DRM is compiled into the kernel or not. I also disabled 
powernowd, in case CPU speed changes were causing the problem.

     Am I looking at a bug here, or can someone see indications of 
likely problems in my setup? Anyone who got this card working 
successfully care to post their logs & setup info?

    The relevant-seeming bits of my logs and glxinfo output are 
reproduced below:

Kernel output:

Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected Ati IGP9100/M chipset
agpgart: Maximum main memory to use for agp memory: 321M
agpgart: AGP aperture is 32M @ 0xd2000000
agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
agpgart: X passes broken AGP3 flags (1f00020f). Fixed.
agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode
agpgart: Putting AGP V3 device at 0000:01:05.0 into 8x mode

Xorg.0.log output:

...
(--) Chipset ATI Radeon Mobility 9100 IGP (U3) 5835 found
...
(II) Loading sub module "radeon"
(II) LoadModule: "radeon"
(II) Loading /usr/X11R6/lib/modules/drivers/radeon_drv.o
(II) Module radeon: vendor="The XFree86 Project"
        compiled for 4.3.99.12, module version = 4.0.1
        Module class: XFree86 Video Driver
        ABI class: XFree86 Video Driver, version 0.7
...
(II) RADEON(0): Direct rendering enabled

glxinfo output:

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.2
...
OpenGL vendor string: Tungsten Graphics, Inc.
OpenGL renderer string: Mesa DRI R200 20030328 AGP 4x x86 TCL
OpenGL version string: 1.3 Mesa 5.0.2
...

I'll also add what may or may not be relevant: when I run xdriinfo, it 
informs me that libGL is "too old".  Don't know if that indicates 
version skew or not.

Thanks for any suggestions...