I am having difficulty getting my Ubuntu 14.04 LTS to work with my new graphics card. I don't really understand the Linux display stack, so I hope it is something easy. I don't know best how to describe my problem, so will give as many details as I can.

My Linux box is a server that has PCIe 2.0, so it can't use most of the newer graphics cards. I bought a $70 card, and it caused hardware faults. So I bought an older NVidia GeForce 8400 GS.

I have a monitor connected to the prior integrated graphics device on the motherboard, and another connected to the new card. When I first turned on the server, the new card displayed a graphic startup screen with a good resolution so I thought all was good. Then I got a GUI message box stating that Ubuntu was running in low graphics mode. I believe I chose to continue anyway for one session. I was able then to proceed to the graphic desktop. I am using a Gnome Throwback (metacity) 2D desktop because the performance is so awful with the standard Ubuntu desktop. From the desktop, I went into system settings and then chose Display.

Nvidia Geforce 8400 Gs Linux Drivers For Mac

The only display that was detected was the older integrated graphics system, not the new one. I next followed instructions from www howopensource com/2012/10/install-nvidia-geforce-driver-in-ubuntu-12-10-12-04-using-ppa/) to do these steps: sudo apt-add-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install nvidia-current nvidia-settings to install nvidia drivers.

After that, I again went into the system settings GUI, and display, and again only the old display was visible. I then rebooted, and now the old display is the one Ubuntu uses boot up.

The monitor connected to the new graphics card is just dark. Something also seems to have broken settings because now the Gnome Throwback graphic desktop won't launch. I appears to start loading, then gives up and takes me back to the login-in screen. I had to change to a different desktop (LXFE if I recall correctly) to get to a desktop.

So reinstalled the Gnome Throwback desktop, and that seemed to restore my ability to get into that desktop, but I still am not able to see anything on the new graphics card. Following some other web pages, I did this, showing relevant output. Lspci -v 05:00.0 VGA compatible controller: NVIDIA Corporation GT218 GeForce 8400 GS Rev.

3 (rev a2) (prog-if 00 VGA controller) Subsystem: eVga.com.

NVIDIA metapackage (340xx legacy version) This metapackage depends on the NVIDIA binary driver and libraries that provide optimized hardware acceleration of OpenGL/GLX/EGL/GLES applications via a direct-rendering X Server. Please see the nvidia-legacy-340xx-kernel-dkms or nvidia-legacy-340xx-kernel-source packages for building the kernel module required by this package. This will provide nvidia-legacy-340xx-kernel-340.107.