up vote 2 down vote favorite

I am using Lenovo Z500 running on Ubuntu 15.10, with the following VGA specifications:

VGA1: Intel HD 4000
VGA2: Geforce GT 740M

After running lspci command, it detects the Intel HD but couldn't detect the second graphical card Nvidia. The lspci output is as follows:

00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 05)
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

Also, I couldn't find the graphical card information using lshw command, the following is the output of this command:

  *-display               
       description: VGA compatible controller
       product: 3rd Gen Core processor Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:28 memory:d3000000-d33fffff memory:e0000000-efffffff ioport:4000(size=64)

I am using the latest released BIOS (2013) from Lenovo corp and the graphical card mode in BIOS sets to Switchable Graphics.

Could any one please explain me what should I do?

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up vote 1 down vote

Install the latest stable NVIDIA drivers supporting GT 740 from the Proprietary GPU drivers PPA.

Before you install new drivers uninstall every NVIDIA related software you have installed before.

Open a terminal and execute :

sudo apt-get purge nvidia*  
sudo reboot

Then install the latest current stable NVIDIA drivers from the long-lived branch by executing :

sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get update
sudo apt-get install nvidia-352 nvidia-prime
sudo reboot

To switch between intel and nvidia graphics - open NVIDIA X Server Settings -> Prime Profiles.

After switching to NVIDIA run sudo lspci again and the output shows your NVIDIA GT 740 GPU.

Note :

In case you use Ubuntu 15.10 there is no need to add the Proprietary GPU drivers repository (sudo add-apt-repository ppa:graphics-drivers/ppa) - the drivers are already included in the Ubuntu repositories. If you had bumblebee installed before you have to remove it as well.

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I am doing what you said. Let me test your answer :) Thanks anyway. – Hossein Mobasher Oct 29 '15 at 11:04
    
Still lspci didn't list the NVIDIA GT 740 GPU. – Hossein Mobasher Oct 29 '15 at 11:21
    
@HosseinMobasher : Did you logout and back in after switching to nvidia ? – cl-netbox Oct 29 '15 at 11:23
    
Yes, I've restarted the system. – Hossein Mobasher Oct 29 '15 at 11:24
    
@HosseinMobasher : Try to change the BIOS settings from switchable graphics to nvidia graphics. – cl-netbox Oct 29 '15 at 12:01
up vote 0 down vote

You need to update your PCI ID database use this command. 

sudo update-pciids

then 

sudo lspci -nn | grep VGA

let me know if it works.

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Thanks, I've tested it and the output didn't changed. Output of sudo update-pciids is Downloaded daily snapshot dated 2015-10-29 03:15:02 and output of sudo lspci -nn | grep VGA is 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) – Hossein Mobasher Oct 29 '15 at 10:34
    
try this command sudo nvidia-smi --query-gpu=name --format=csv,noheader – Neil Oct 29 '15 at 10:41
    
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running. – Hossein Mobasher Oct 29 '15 at 11:16
up vote 0 down vote

I face similar situation and consulted an expert , looks like there are limitation about the match of graphical card and compiler / cuda version support. looks like my card is supported up to Ubuntu 13.04 so 15.10 is not supporting it. In addition I suspect the g++ library on kernel does not fit the kernel g++ that support cuda 6.0.37 for my card and cuda version cc1.0 that is supporten only until gcc/g++ version 4.8.x while ubuntu 15.10 kernel use gcc/g++ 5.0.X version.

you might have been facing compatibility issue with your hardware that is not supposed to function properly on 15.10.

I have a similar problem my system construct is:

:~$ sudo lshw -C display
  *-display               
   description: VGA compatible controller
   product: G96 [GeForce 9400 GT]
   vendor: NVIDIA Corporation
   physical id: 0
   bus info: pci@0000:01:00.0
   version: a1
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
   configuration: driver=nvidia latency=0
   resources: irq:30 memory:fa000000-faffffff memory:d0000000-dfffffff memory:f8000000-f9ffffff ioport:e000(size=128) memory:fb000000-fb07ffff

:~$ /usr/bin/nvidia-smi
Tue Nov  3 13:29:21 2015       
+------------------------------------------------------+                       
| NVIDIA-SMI 340.93     Driver Version: 340.93         |                       
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce 9400 GT     On   | 0000:01:00.0     N/A |                  N/A |
|  0%   50C   P12    N/A /  N/A |     57MiB /   511MiB |     N/A      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Compute processes:                                               GPU Memory |
|  GPU       PID  Process name                                     Usage      |
|=============================================================================|
|    0            Not Supported                                               |
+-----------------------------------------------------------------------------+

    :~$ ubuntu-drivers devices
== cpu-microcode.py ==
driver   : intel-microcode - distro non-free

== /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0 ==
modalias : pci:v000010DEd00000641sv00001043sd00008296bc03sc00i00
vendor   : NVIDIA Corporation
model    : G96 [GeForce 9400 GT]
driver   : xserver-xorg-video-nouveau - distro free builtin
driver   : nvidia-340-updates - distro non-free
driver   : nvidia-304-updates - distro non-free
driver   : nvidia-304 - distro non-free
driver   : nvidia-340 - distro non-free recommended

when I change the display to use onboard intel d type display cable output the SMI module is not loaded and connamd "/usr/bin/nvidia-smi" failes because it can not comunicate the driver.

mybe someone can help with a solution how to drive display from onboard intel graphics hardware ( i5 processor 4 threads) and yet keep the NVIDIA 340.96 driver loaded on kernel?

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