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Old 07-02-2006, 08:32 PM   #1
Registered: Jan 2004
Location: California
Distribution: Ubuntu 10.04
Posts: 145

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nvidia driver problems

I just installed Dapper yesterday. I followed the instructions at and edited my xorg.conf file so Driver "nv" is Driver "nvidia". When I restart X with this one change I hear the Gnome startup sound and the screen goes black. I am guessing this means my monitor doesn't support a resolution or refresh rate that X is trying to use.

When I change the driver back to "nv" X starts up normally. Why can't I load X with the nvidia driver and how can I fix this?

Thanks in advance.
Old 07-02-2006, 09:31 PM   #2
Gentoo Developer
Registered: Feb 2004
Location: Fort Lauderdale FL.
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What happens when you;
sudo modprobe nvidia
Also check the log (I don't use Ubuntu but should be)
/var/log/Xorg.o.log.old (You want the one when it didn't work)
Old 07-02-2006, 10:16 PM   #3
Registered: Jan 2004
Location: California
Distribution: Ubuntu 10.04
Posts: 145

Original Poster
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running sudo modprobe nvidia rendered no output.

I checked /var/log/Xorg.0.log.old and the only section that had warnings or errors was this one:
(II) Setting vga for screen 0.
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Enabling RENDER acceleration
(WW) NVIDIA(0): Unable to read EDID for display device CRT-1
(II) NVIDIA(0): NVIDIA GPU GeForce 6600 GT at PCI:1:0:0
(--) NVIDIA(0): VideoRAM: 131072 kBytes
(--) NVIDIA(0): VideoBIOS:
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 6600 GT at PCI:1:0:0:
(--) NVIDIA(0): CRT-1
(--) NVIDIA(0): Samsung SyncMaster (DFP-0)
(--) NVIDIA(0): CRT-1: 400.0 MHz maximum pixel clock
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): 155.0 MHz maximum pixel clock
(--) NVIDIA(0): Samsung SyncMaster (DFP-0): Internal Single Link TMDS
(II) NVIDIA(0): Assigned Display Device: CRT-1
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "1280x1024"
(II) NVIDIA(0): "1024x768"
(II) NVIDIA(0): "832x624"
(II) NVIDIA(0): "800x600"
(II) NVIDIA(0): "720x400"
(II) NVIDIA(0): "640x480"
(II) NVIDIA(0): Virtual screen size determined to be 1280 x 1024
(WW) NVIDIA(0): Unable to get display device CRT-1's EDID; cannot compute DPI
(WW) NVIDIA(0): from EDID.
(==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
(--) Depth 24 pixmap format is 32 bpp
Here are some quotes from my xorg.conf file:
Section "Monitor"
Identifier "SyncMaster"
Option "DPMS"
HorizSync 31.5 - 64.3
VertRefresh 50-100
Section "Device"
Identifier "nvidia1"
Driver "nv"
BusID "PCI:1:0:0"
Old 07-03-2006, 09:16 PM   #4
Registered: Jun 2006
Posts: 33

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can you quote the section of xorg.conf that says device "screen" as well? Does it run your monitor at the right resolution/refresh rate before you change the driver from nv to nvidia? You can and should be able to get the resolution stuff sorted out before you switch drivers, so you can isolate if its a driver problem or a screen size problem.
Old 07-03-2006, 09:50 PM   #5
Registered: Jan 2004
Location: California
Distribution: Ubuntu 10.04
Posts: 145

Original Poster
Rep: Reputation: 15
I have two monitors so I will eventually have two screen sections but right now this is my only screen section in xorg.conf:

Section "Screen"
Identifier "Screen1"
Device "nvidia1"
Monitor "SyncMaster"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "832x624" "800x600" "720x400" "640x480"
Here is the ServerLayout and commented out DRI section also:
Section "ServerLayout"
Identifier "Default Layout"
# Screen 0 "Screen1" 0 0
# Screen 1 "Screen2" LeftOf "Screen1"
# Option "Xinerama" "On"
Screen "Screen1"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
# InputDevice "stylus" "SendCoreEvents"
# InputDevice "cursor" "SendCoreEvents"
# InputDevice "eraser" "SendCoreEvents"

#Section "DRI"
# Mode 0666



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