I had some troubles getting nvidia proprietary drivers up & running on Debian Jessie (kernel 3.13-1-amd64).

I'm sharing the solution I found here, as it might be useful to somebody else.

Machine configuration

Machine: Thinkpad W530
Graphics card: NVIDIA Corporation GK107GLM [Quadro K2000M] (rev a1)
Operating System: Debian Jessie (testing) - amd64
Kernel: 3.13-1-amd64 (3.13.10-1)

The error message I got:

[   36.508494] NVRM: GPU at 0000:01:00.0 has fallen off the bus.
[   36.508500] NVRM: os_pci_init_handle: invalid context!
[   36.508502] NVRM: os_pci_init_handle: invalid context!
[   36.508507] NVRM: GPU at 0000:01:00.0 has fallen off the bus.
[   36.508510] NVRM: os_pci_init_handle: invalid context!
[   36.508511] NVRM: os_pci_init_handle: invalid context!
[   36.536034] NVRM: RmInitAdapter failed! (0x25:0x28:1169)
[   36.536044] NVRM: rm_init_adapter failed for device bearing minor number 0
[   36.536067] NVRM: nvidia_frontend_open: minor 0, module->open() failed, error -5

Finally, how I solved

I found a post recommending to add rcutree.rcu_idle_gp_delay=1 kernel boot parameter, and it seems to work just fine.

To accomplish that, I modified /etc/default/grub:

GRUB_CMDLINE_LINUX="nox2apic rcutree.rcu_idle_gp_delay=1"

And, just because the nvidia driver is complaining about unsupported framebuffer, I also commented these two out:

# GRUB_GFXMODE=1920x1080x32

Don't forget to run update-grub, and then reboot.