Problem with NVIDIA GeForce GTX 950M and 4k display

Getting your soundcard to work, using Debian on non-i386 hardware, etc

Re: Problem with NVIDIA GeForce GTX 950M and 4k display

Postby fireExit » 2016-03-06 13:38

what exactly is not working?
do you end up in black screen after reboot?
the 950M is supported by the jessie-BPO bumblebee version, so it should "just work"
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Re: Problem with NVIDIA GeForce GTX 950M and 4k display

Postby Odranoel » 2016-03-06 15:29

No, I mean that once the drivers are installed, after reboot nothing changes: the lower part of the screen is still not visualised, the display is still labelled as "unknown" and xrandr gives always the same output...
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Re: Problem with NVIDIA GeForce GTX 950M and 4k display

Postby Yendorian » 2017-04-19 17:13

I know this is an older post, but I had the same problem with an Asus K501U, for the most part getting the same errors. I was able to solve the problem with the error message
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[ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIDIA GPU at PCI:1:0:0
after getting sane advice from stevepusser of the Debian community.

I installed bumblebee from the jessie-backports just like Odranoel, but I didn't install the backport kernel and backport kernel headers.
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sudo tee -a /etc/apt/sources.list <<< "deb http://http.debian.org/debian jessie-backports main contrib non-free"
sudo apt-get install -t jessie-backports bumblebee-nvidia primus
sudo dpkg --add-architecture i386 && sudo apt-get update
sudo apt-get install -t jessie-backports primus-libs:i386
sudo adduser $USER bumblebee

#Important: install kernel and headers
sudo tee -a /etc/apt/sources.list <<< "deb http://httpredir.debian.org/debian jessie-backports main"
sudo apt-get update && sudo apt-get install -t jessie-backports linux-image-4.9.0-0.bpo.2-amd64
sudo apt-get install -t jessie-backports linux-headers-amd64


After rebooting I was able to select the 4.9.0 kernel from the boot loader, then run optirun glxgears without a problem. If you can't get to a GUI and are dumped to a terminal instead, you may need to delete (or mv) /etc/X11/xorg.conf

At one point before this I also used
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sudo apt-get install x11-xserver-utils


Now I have the best desktop operating system ever!
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