Comment 9 for bug 990436

I can confirm that this issue still exists on Ubuntu 12.04.1 (32-bit) and affects fglrx versions >8.950 (Catalyst >12.2) on AGP systems. The issue is also present on the most recent Catalyst 13.1-legacy. I tested this on a VIA KT400 chipset, so the issue is not exclusive to nforce2-based systems.

Since the Xorg.0.log backtrace points out the fglrx_dri.so library, I tried rebuilding the 12.4 and 13.1-legacy debs using the 12.2 versions of fglrx_dri.so and fglrx-libGL.so.1.2 which I believe are needed to enable DRI. Surprisingly, the modified 12.4 drivers boot to desktop without error. The modified 13.1-legacy, however, reaches the desktop with GLX hardware acceleration disabled. I'm going to stick with Catalyst 12.2 for now, as replacing the dri and libGL libraries in newer versions is prone to be buggy.

As far as I can tell, whatever changes AMD's driver team made to fglrx_dri.so and fglrx-libGL.so after Catalyst 12.2 broke our AGP systems.

My config:
- Graphics: Radeon HD 2600 XT AGP
- CPU: AMD Athlon XP 2000+ (1.6 GHz, 32 bits)
- Chipset: VIA KT400
- RAM: 768 MB DDR-SDRAM
- Version kernel-3.2.0-36
- Ubuntu version: Xubuntu 12.04.1 (32 bits)