Created attachment 77445 [details]
systemd journal with kernel messages

Hardware: NVIDIA Corporation G96 [Quadro FX 580] (rev a1)
Distro: Arch Linux
Bisected commit:
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=2c1a425e7d537ea655fa276f267c0b1cd100ff34

Steps to reproduce:
1. Boot system into text mode with normal kernel parameters.
2. Wait for module to load and attempt KMS.

Expected behavior:
3. KMS succeeds, login prompt appears.

Actual behavior:
3. System locks up and monitors go into power-saving mode.

More info:
* With nouveau.modeset=0, system boots normally.
* Was able to use SysRq to sync disks after hang but could not ssh, ping, or
reboot.
* Regression still present in current nvidia-git (db1b0f52) as well as
kernel.org git.
* nvidia module is not installed.

lspci.log and vbios.rom forthcoming.