On the workstation, two cards are installed: Geforce 210 (monitor connected) and Geforce GTX 890Ti, operation system Ubuntu 14.04.
First, we install the NVIDIA driver for Geforce 210 adapter:
…
sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
sudo apt-get update && sudo apt-get install nvidia-340 nvidia-settings
sudo nvidia-xconfig
…
Then we modify the /etc/X11/xorg.conf file:
Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
BoardName “GeForce 210”
BusID “PCI:02:00.0”
EndSection
The video system is working correctly.
The lspci -k| grep -EA2 ‘VGA|3D’ finds two cards:
02:00.0 GT218 [GeForce210] (rev a2)
Device 3629
Kernel driver in use: nvidia
03:00.0 GM200 [GeForce GTX 980 Ti] (rev a1)
Device 3230
Next we install CUDA Toolkit 7.5 (deb local) in exact accordance with the guidance of the Installation Guide for Linux. The installation process is completed normally.
Without reboot everything’s in order: The video system is working correctly and deviceQuery (CUDA Samples) is PASS.
After the reboot, the video system is not working correctly: The system displays a graphical password entry screen and the password does not perceive. In text mode terminal, we can log in, and deviceQuery is working properly.
The lspci -k| grep -EA2 ‘VGA|3D’ shows other details:
02:00.0 GT218 [GeForce210] (rev a2)
Device 3629
03:00.0 GM200 [GeForce GTX 980 Ti] (rev a1)
Device 3230
Kernel driver in use: nvidia
What we have done is wrong?
How to do the right thing?
Thanks in advance for your help.