Comment 6 for bug 700646

I do have the same combination (i5 + 425M), but on Ubuntu 11.04.
The nVidia-Card is detected and I had the driver installed but "not in use".
Rebooting failed so I disabled the card through failsafeX.
I tried it with vgaswitcheroo but I don't get it to work out...
It's running stable since, but without the extra GPU - any ideas?

kern.log says (anyway if enabled or not):
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.285275] nvidia: module license 'NVIDIA' taints kernel.
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.285279] Disabling lock debugging due to kernel taint
[...]
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.732020] nvidia 0000:01:00.0: power state changed by ACPI to D0
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.732024] nvidia 0000:01:00.0: power state changed by ACPI to D0
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.732028] nvidia 0000:01:00.0: enabling device (0004 -> 0007)
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.732037] nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
May 13 16:44:17 mrssheep-MS-1751 kernel: [ 10.732045] nvidia 0000:01:00.0: setting latency timer to 64