Bug#808371: nvidia-driver: Driver freezes with GTX960M (+skylake switchable)

[Luca Boccassi]

On Dec 19, 2015 09:09, "Mateusz Kaduk" <mateusz.kaduk at gmail.com> wrote:
>
> Package: nvidia-driver
> Version: 352.63-1
> Severity: normal
>
> Dear Maintainer,
>
> I have laptop with GTX960M and I7-6700HQ processor.
> After installing nvidia-driver, and restarting X does not start but I see
console and it keeps blinking such that I cannot type anything without
delay of 5-6seconds and some key presses are ignored (impossible to login
and type password).
> I expect nvidia driver to support my graphics card, such that it does not
conflict with intel graphics.
> Removing all packages with "nvidia" in the name, boots into gnome but
running Intel SkyLake.
> I would like to use nvidia instead, which unfortunetly does not work.
>
> BIOS settings are "switchable" or "internal", I have set it to
"switchable".
> I use experimental only to test with recent drivers as I had the same
problems with the driver from sid.
>
>
>
> -- Package-specific info:
> uname -a:
> Linux debian 4.4.0-rc4-amd64 #1 SMP Debian 4.4~rc4-1~exp1 (2015-12-13)
x86_64 GNU/Linux
>
> /proc/version:
> Linux version 4.4.0-rc4-amd64 (debian-kernel at lists.debian.org) (gcc
version 5.3.1 20151207 (Debian 5.3.1-3) ) #1 SMP Debian 4.4~rc4-1~exp1
(2015-12-13)
>
> /proc/driver/nvidia/version:
> NVRM version: NVIDIA UNIX x86_64 Kernel Module  352.63  Sat Nov  7
21:25:42 PST 2015
> GCC version:  gcc version 5.3.1 20151207 (Debian 5.3.1-3)
>
> lspci 'VGA compatible controller [0300]':
> 00:02.0 VGA compatible controller [0300]: Intel Corporation Device
[8086:191b] (rev 06) (prog-if 00 [VGA controller])
>     Subsystem: Lenovo Device [17aa:3802]

Hi,

>From your system log and your description it looks like you have a lenovo
laptop with switchable graphics (ie an optimus system).

If that's indeed the case, then you cannot use the Nvidia driver as the
main stack. You must use the Intel stack as the main driver, and to do so
you need to install the bumblebee-nvidia package alongside nvidia-driver,
which will allow you to run programs on demand on the Nvidia card with:
optirun <program name>

Kind regards,
Luca Boccassi
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