I have a Dell 17xps with an NVidia Optimus 555M graphics card.
It's all worked ok with Ubuntu 12.x and bumblebee. But I really want to use 14.04 and nvidia-prime.
I've basically been following these instructions: How to get an Optimus 650 working
Everything worked fine until reboot. After reboot, /dev/nvid* was empty. I found someone else talking about this on X.org here:
and added the script to my cron at reboot.
Problem: Symptom #1: It boots and ls /dev/nvid* gives results. It prompts me with Unity's login screen. But when I log in, it just hangs. I can basically see the mouse and the login background and it just stays there. I cntrl-alt-F1 and look a the syslog and there's nothing interesting. No video errors at all.
Symptom #2: I installed fluxbox, which I have used before. When I login to that, it seems great. Fluxbox is limited, so GLXGears doesn't like it (anyone know if there's a way around that?), but everything seems to render. I can't tell for sure if I'm on the NVidia side of the card or the Intel, but from the heat of the laptop, it feels like the NVidia side.
Symptom#2B: In fluxbox, I can open Nvidia-settings. And I don't have an NVidia PRIME section. No clue why? If I try to install nvidia-prime, it tells me it's already installed. But it's not on the settings box.
Symptom#3: I have no xorg.conf file in /etc/X11... don't I need one? I'm sure I didn't delete it. I remember nvidia-xconfig (I think?) will create one, since fluxbox is loading without one, maybe I'm wrong? I know nvidia-xconfig has broken my system before.
I'm running NVidia 331.38 drivers. lspci gives me this: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF116M [GeForce GT 555M/635M] (rev a1)
Help? Thank you. --kevin