[Ubuntu 14.04 64bit]
After switching between Intel / NVIDIA graphics and the different NVIDIA drivers I am now suddenly stuck with the Intel GPU. It used to be no problem at all switching between the two - I cannot say for sure what is suddenly causing the issue. I think the last thing I did was switching to the "X.Org X server" driver - then something broke. The switching was part of me trying to troubleshoot issues with setting up a secondary screen.
Every time I try to switch to NVIDIA I get this very expressive error message and then it switches back to Intel :/
I could use some assistance with troubleshooting or suggestions on what to try.
So far I (un/re)installed the various packages "nvidia-settings" / "nvidia-current" / "nvidia-current-updates" / "nvidia-331" / "nvidia-331-updates". To no avail.
> lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro K2000M] (rev a1)
Regarding suggestion by Qasim:
raffael@raffael-GT60~> sudo prime-select nvidia [sudo] password for raffael: Error: alternatives are not set up properly Error: nvidia mode can't be enabled raffael@raffael-GT60~> sudo prime-select intel Error: alternatives are not set up properly Error: intel mode can't be enabled
Regarding 2nd suggestion by Qasim:
sudo apt-get purge nvidia* [reboot] sudo apt-get install nvidia-319-updates nvidia-settings-319-updates nvidia-prime [reboot] [tried to switch to NVIDIA]
Weird thing is - this actually worked the first time !? Then I switched back to Intel - log off/on - Switched back to NVIDIA - log off/on -> system crashed - error as described above.
Regarding suggestion by Louis Matthijssen:
raffael@raffael-GT60:~$ sudo update-alternatives --set /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf /usr/lib/nvidia-331-updates-prime/ld.so.conf update-alternatives: error: alternative name (/etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf) must not contain '/' and spaces raffael@raffael-GT60:~$ ls -la /usr/lib/nvidia-331-updates-prime total 44 drwxr-xr-x 2 root root 4096 Mai 2 22:45 . drwxr-xr-x 196 root root 32768 Mai 3 10:57 .. -rw-r--r-- 1 root root 0 Apr 4 11:50 alt_ld.so.conf -rw-r--r-- 1 root root 60 Apr 4 11:50 ld.so.conf
Repeated algo twice - didn't work again :/
Now it seems to work:
raffael@raffael-GT60:~$ sudo update-alternatives --set x86_64-linux-gnu_gl_conf /usr/lib/nvidia-331-updates-prime/ld.so.conf update-alternatives: using /usr/lib/nvidia-331-updates-prime/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in manual mode raffael@raffael-GT60:~$ sudo update-alternatives --set i386-linux-gnu_gl_conf /usr/lib/nvidia-331-updates-prime/alt_ld.so.conf update-alternatives: using /usr/lib/nvidia-331-updates-prime/alt_ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in manual mode
Afterwards I could switch to NVIDIA - but wasn't offered the extended "NVIDIA X Server Settings" - will reboot now and see what happens. Follow up: It switched back to Intel after reboot and cannot switch to NVIDIA as usual. To me it seems that your method, Louis, tricks the OS into believing it uses NVIDIA while this is actually not the case.