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Old 11th October 2007, 11:37 AM
Crosskeys Offline
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Join Date: Jan 2006
Location: Baile Átha Cliath, Éire
Posts: 6
Display corruption on Dell XPS 1710 (nvidia GeForce Go 7950 GTX) on F7

I'm experencing a consistent problem where my laptop display appears to lose sync with the controller. I'm not certain of the correct terminology but the details from the screen appear to be there (say, if I have a gnome-terminal open [with black text, white background] and hold down Ctrl-C, a set of vertical black lines appears). The colours are unaffected, just the content is scrambled, with defined edges. The problem appears randomly, sometimes it will happen after a few seconds, other times it will go for hours with no problems. I also experience the intermittent flicker (very short flashes of black) reported by other users.
I'm running Gnome with compiz as window manager.

When I suspend to RAM the problem is gone on restart (if it restarts - but that's probably another issue), but using Ctrl-Alt-FnPlus/FnMinus to swicth resolutions has no effect. I can see the screen content changing as I switch through the modes but they're all scrambled in the same way.

Display: 17-inch Seiko (DFP-0) 1920x1200 32 bpp.
GPU: nvidia GeForce Go 7950 GTX - 512 MiB VRAM
nvidia driver version: 100.14.19 (compiled on this machine. I was using livna 100.14.11 RPM but this had the same problem).

Other: Intel Core 2 Duo T7600 (2 x 2.33 GHz), 2 GiB RAM, ...

$ cat /etc/X11/xorg.conf

# Xorg configuration created by livna-config-display

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Synaptics" "CorePointer"

Section "Files"
ModulePath "/usr/lib/xorg/modules/extensions/nvidia"
ModulePath "/usr/lib/xorg/modules"

Section "ServerFlags"
Option "AIGLX" "on"

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"

Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1920x1200"
HorizSync 31.5 - 90.0
VertRefresh 50.0 - 75.0
Option "dpms"

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
Option "NvAGP" "1"
Option "AddARGBGLXVisuals" "True"
Option "DisableGLXRootClipping" "True"

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1920x1200" "1600x1200" "800x600" "640x480" "640x400"

Section "Extensions"
Option "Composite" "Enable"
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1710, 7950, corruption, dell, display, geforce, gtx, nvidia, xps

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