installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

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RobbieTheK
Posts: 19
Joined: 2016/07/31 04:26:10

installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

Post by RobbieTheK » 2021/09/15 19:55:42

We are using the GTX 1050 as a GPU accelerator so it's not needed for display purposes. It appears the internal VGA is disabled. How can I re-enable the VGA? We are on Rocks Cluster 6.1.1 in Centos 6.10 and yes we're trying to upgrade.

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cat /etc/X11/xorg.conf
Section "ServerFlags"
   Option "RandR" "on"
 EndSection
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 430.40

Section "ServerLayout"
	Identifier     "Layout0"
	Screen      0  "Screen0" 0 0
	InputDevice    "Keyboard0" "CoreKeyboard"
	InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
	ModulePath   "/usr/lib64/xorg/modules/extensions/nvidia"
	ModulePath   "/usr/lib64/xorg/modules"
	FontPath     "/usr/share/fonts/default/Type1"
EndSection

Section "InputDevice"

    # generated from default
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "Emulate3Buttons" "no"
	Option	    "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from data in "/etc/sysconfig/keyboard"
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbLayout" "us"
	Option	    "XkbModel" "pc105"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Unknown"
	ModelName    "Unknown"
	Option	    "DPMS"
EndSection

Section "Device"
	Identifier  "Device0"
	Driver      "nvidia"
	VendorName  "NVIDIA Corporation"
	Option "AllowEmptyInitialConfiguration" "true"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Device0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
	EndSubSection
EndSection

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 lspci|grep -i vga
01:04.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 (rev 0a)
03:00.0 VGA compatible controller: NVIDIA Corporation GP107 [GeForce GTX 1050] (rev a1)

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lshw -numeric -C display
  *-display               
       description: VGA compatible controller
       product: GP107 [GeForce GTX 1050] [10DE:1C81]
       vendor: NVIDIA Corporation [10DE]
       physical id: 0
       bus info: pci@0000:03:00.0
       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:24 memory:df000000-dfffffff memory:c0000000-cfffffff(prefetchable) memory:be000000-bfffffff(prefetchable) ioport:d800(size=128) memory:def80000-deffffff(prefetchable)
  *-display UNCLAIMED
       description: VGA compatible controller
       product: MGA G200eW WPCM450 [102B:532]
       vendor: Matrox Electronics Systems Ltd. [102B]
       physical id: 4
       bus info: pci@0000:01:04.0
       version: 0a
       width: 32 bits
       clock: 33MHz
       capabilities: pm vga_controller cap_list
       configuration: latency=64 maxlatency=32 mingnt=16
       resources: memory:db800000-dbffffff(prefetchable) memory:ddffc000-ddffffff memory:de000000-de7fffff

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xrandr --verbose --properties
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1680 x 921, maximum 4096 x 2304
default connected 1680x921+0+0 (0x15c) normal (normal) 0mm x 0mm
	Identifier: 0x151
	Timestamp:  -354028520
	Subpixel:   unknown
	Clones:    
	CRTC:       0
	CRTCs:      0
	Transform:  1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000

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inxi -G
Graphics:  Card-1: Matrox Systems MGA G200eW WPCM450 
           Card-2: NVIDIA GP107 [GeForce GTX 1050] 
           X.org: 1.17.4 driver: nvidia tty size: 179x41 Advanced Data: N/A for root
And I promise to return if/when I find a solution.

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TrevorH
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Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

Post by TrevorH » 2021/09/15 22:29:17

CentOS 6 is no longer supported. It went EOL about a year ago. Find a different distro that still has support.
CentOS 6 died in November 2020 - migrate to a new version!
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 is dead, do not use it.
Full time Geek, part time moderator. Use the FAQ Luke

RobbieTheK
Posts: 19
Joined: 2016/07/31 04:26:10

Re: installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

Post by RobbieTheK » 2021/09/15 23:24:46

We're trying to upgrade but there is an incomplete Rocks upgrade that was started by my predecessor which needs to be resolved and I'm waiting for guidance from their admins. As it's open source we rely on their responses which takes time.

So let's pretend it's CentOS 7. Any suggestions for getting the VGA working?

tunk
Posts: 1026
Joined: 2017/02/22 15:08:17

Re: installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

Post by tunk » 2021/09/16 12:51:56

Wouldn't really know, but you could see if there's any settings in the bios.

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jlehtone
Posts: 3733
Joined: 2007/12/11 08:17:33
Location: Finland

Re: installing Nvidia GPU on CentOS disables internal VGA, how to fix; display UNCLAIMED

Post by jlehtone » 2021/10/03 19:17:04

At least you do see both devices; there were boards that disable integrated chip when discrete GPU is connected.

You do have:

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Section "Device"
	Identifier  "Device0"
	Driver      "nvidia"
	VendorName  "NVIDIA Corporation"
	Option "AllowEmptyInitialConfiguration" "true"
EndSection
Which clearly loads NVidia's X11 driver. You should rather load something for the Matrox.
(Or was it that you need to load the NVidia driver too, for CUDA?
Definitely have a "Device" for Matrox and set the "Screen" to use that device.)


How about BIOS and GRUB? Do they show on both, or only via discrete's port(s)?

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