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01-07-2006, 02:40 PM
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#1
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LQ Newbie
Registered: Jan 2006
Posts: 5
Rep:
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Problems with widescreen resolutions (1280x720) on 15" widescreen TFT with nvidia
I have an nVidia GeForce 6600GT and a 15" widescreen TFT monitor. I'm using the latest release of the nvidia drivers (as 7/1/06). My distro is SuSE 9.2.
I'm having some interesting problems getting the proper resolution to work, though. I've set the config file to the correct settings, and used a modeline generator to get the right modeline for this resolution. I've also used SaX2 to set 1280x720 as my resolution. The strange thing is that when I do this the resolution is somehow stretched... items appear stretched vertically, and the screen crops like a virtual resolution; ie you can move the mouse to the top of the screen to reveal more desktop.
Now, it appears as though the widescreen (16:9) res has been stretched to a square, is this a driver issue? Do I need to set some sort of geometry option, or is there a way to turn on 16:9 ratio in xorg.conf?
Basically, I'd just like to get it working...
Any ideas or help would be appreciated. If you want any more details please ask.
Thanks in advance. 
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01-07-2006, 02:44 PM
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#2
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LQ Guru
Registered: Mar 2002
Location: Salt Lake City, UT - USA
Distribution: Gentoo ; LFS ; Kubuntu ; CentOS ; Raspbian
Posts: 12,613
Rep:
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This is odd. My first assumption is that Sax2 is doing something (or undoing something) you changed in xorg.conf with your modeline.
How do you have it connected to the monitor, VGA or DVI or something else? Also, check that your modeline isn't the culprit (try other ones that google turns up, just to see if they are closer).
I don't think it's a driver issue (although I haven't heard anything great about the new driver, I don't think it would be causing this). My guess is it's something to do with your configs, and further, with how Sax2 is treating them.
Cool
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01-07-2006, 02:53 PM
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#3
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LQ Newbie
Registered: Jan 2006
Posts: 5
Original Poster
Rep:
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Yep, I consider it to be quite strange...
The monitor is connected to the PC via VGA, and I've tried a few different modelines, and so far none have given me anything better, and I've tried commenting in and out a few different options to see if it would make a difference: so far thing has worked.
I'll just run and get a copy of my xorg.conf to see if anyone can find an obvious culprit in that.
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01-07-2006, 02:59 PM
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#4
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LQ Guru
Registered: Mar 2002
Location: Salt Lake City, UT - USA
Distribution: Gentoo ; LFS ; Kubuntu ; CentOS ; Raspbian
Posts: 12,613
Rep:
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It has been my fortunate pleasure to not need a modeline with my setup (yet). I have heard that connecting via DVI will change this, but for now, with the VGA connection, it's working just fine as is.
Here's a copy of my xorg.conf if you want to give it a try (not the whole thing, I use Gentoo and probably a different version of X.org but you could try the different lines like in the Monitor section):
Code:
# Any number of monitor sections may be present
Section "Monitor"
Identifier "Hansol"
# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.
HorizSync 31.5-50
# HorizSync 30-64 # multisync
# HorizSync 31.5, 35.2 # multiple fixed sync frequencies
# HorizSync 15-25, 30-50 # multiple ranges of sync frequencies
# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.
VertRefresh 40-90
EndSection
# **********************************************************************
# Graphics device section
# **********************************************************************
# Any number of graphics device sections may be present
# Standard VGA Device:
Section "Device"
Identifier "Standard VGA"
VendorName "Unknown"
BoardName "Unknown"
# The chipset line is optional in most cases. It can be used to override
# the driver's chipset detection, and should not normally be specified.
# Chipset "generic"
# The Driver line must be present. When using run-time loadable driver
# modules, this line instructs the server to load the specified driver
# module. Even when not using loadable driver modules, this line
# indicates which driver should interpret the information in this section.
Driver "vga"
# The BusID line is used to specify which of possibly multiple devices
# this section is intended for. When this line isn't present, a device
# section can only match up with the primary video device. For PCI
# devices a line like the following could be used. This line should not
# normally be included unless there is more than one video device
# intalled.
# BusID "PCI:0:10:0"
# VideoRam 256
# Clocks 25.2 28.3
EndSection
# Device configured by xorgconfig:
Section "Device"
Identifier "GF4"
Driver "nvidia"
# Driver "nv"
#VideoRam 131072
# Insert Clocks lines here if appropriate
Option "NvAGP" "1"
# Option "XvMCUsesTextures" "1"
EndSection
# **********************************************************************
# Screen sections
# **********************************************************************
# Any number of screen sections may be present. Each describes
# the configuration of a single screen. A single specific screen section
# may be specified from the X server command line with the "-screen"
# option.
Section "Screen"
Identifier "Screen 1"
Device "GF4"
Monitor "Hansol"
DefaultDepth 24
Subsection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
EndSubsection
What's even funnier now that I look at that is that this is the old xorg.conf from my 19" CRT monitor, I suppose I have only changed the Modes since then to add the 1280x1024 (which I don't understand, it should be 1280x720).
Lucky me that things just 'work' eh
Must be my TV that loves me. (In a Yoda voice)Some tweaking I'll do...
Cool
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01-07-2006, 04:48 PM
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#5
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LQ Newbie
Registered: Jan 2006
Posts: 5
Original Poster
Rep:
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Heh, i'll try that config, thanks.
Heres mine if anyone wants to look through it:
Quote:
# /.../
# SaX generated X11 config file
# Created on: 2006-01-07T20:20:05+0000.
#
# Version: 4.8
# Contact: Marcus Schaefer <sax@suse.de>, 2002
#
# Automatically generated by [ISaX] (4.8)
# PLEASE DO NOT EDIT THIS FILE!
#
Section "Files"
FontPath "/usr/X11R6/lib/X11/fonts/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/local"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/Type1"
FontPath "/usr/X11R6/lib/X11/fonts/URW"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo"
FontPath "/usr/X11R6/lib/X11/fonts/PEX"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic"
FontPath "/usr/X11R6/lib/X11/fonts/latin2/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/latin2/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/latin2/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/latin2/Type1"
FontPath "/usr/X11R6/lib/X11/fonts/latin7/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/baekmuk:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/japanese:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/kwintv"
FontPath "/usr/X11R6/lib/X11/fonts/truetype"
FontPath "/usr/X11R6/lib/X11/fonts/uni:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/CID"
FontPath "/usr/X11R6/lib/X11/fonts/ucs/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/ucs/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/ucs/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/hellas/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/hellas/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/hellas/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/hellas/Type1"
FontPath "/usr/X11R6/lib/X11/fonts/misc/sgi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/xtest"
FontPath "/opt/kde3/share/fonts"
InputDevices "/dev/ttyS0"
InputDevices "/dev/ttyS1"
InputDevices "/dev/ttyS2"
InputDevices "/dev/ttyS3"
InputDevices "/dev/ttyS4"
InputDevices "/dev/ttyS5"
InputDevices "/dev/ttyS6"
InputDevices "/dev/ttyS7"
InputDevices "/dev/ttyS8"
InputDevices "/dev/psaux"
InputDevices "/dev/logibm"
InputDevices "/dev/sunmouse"
InputDevices "/dev/atibm"
InputDevices "/dev/amigamouse"
InputDevices "/dev/atarimouse"
InputDevices "/dev/inportbm"
InputDevices "/dev/gpmdata"
InputDevices "/dev/mouse"
InputDevices "/dev/usbmouse"
InputDevices "/dev/adbmouse"
InputDevices "/dev/input/mice"
InputDevices "/dev/input/event0"
InputDevices "/dev/pointer0"
InputDevices "/dev/pointer1"
InputDevices "/dev/pointer2"
InputDevices "/dev/pointer3"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail"
Option "RandR" "on"
EndSection
Section "Module"
Load "freetype"
Load "type1"
Load "dbe"
Load "glx"
Load "extmod"
Load "v4l"
EndSection
Section "InputDevice"
Driver "kbd"
Identifier "Keyboard[0]"
Option "Protocol" "Standard"
Option "XkbLayout" "gb"
Option "XkbModel" "pc105"
Option "XkbRules" "xfree86"
EndSection
Section "InputDevice"
Driver "mouse"
Identifier "Mouse[1]"
Option "Buttons" "7"
Option "Device" "/dev/input/mice"
Option "Name" "ImExPS/2 Generic Explorer Mouse"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
# Option "CalcAlgorithm" "CheckDesktopGeometry"
# DisplaySize 356 304
HorizSync 30-62
Identifier "Monitor[0]"
ModelName "<UNDEFINED>"
Option "DPMS"
VendorName "NUL"
VertRefresh 56-75
UseModes "Modes[0]"
EndSection
Section "Modes"
Identifier "Modes[0]"
ModeLine "1280x720" 74.160 1280 1352 1392 1648 720 725 730 750 -hsync -vsync
Modeline "1024x768" 61.90 1024 1080 1184 1344 768 769 772 794
Modeline "800x600" 36.90 800 832 912 1024 600 601 604 621
Modeline "640x480" 23.10 640 656 720 800 480 481 484 497
ModeLine "1280x720" 74.160 1280 1352 1392 1648 720 725 730 750 -hsync -vsync
Modeline "1280x1024" 103.20 1280 1360 1496 1712 1024 1025 1028 1058
Modeline "1024x768" 61.90 1024 1080 1184 1344 768 769 772 794
Modeline "800x600" 36.90 800 832 912 1024 600 601 604 621
Modeline "640x480" 23.10 640 656 720 800 480 481 484 497
Modeline "1280x768" 77.40 1280 1344 1480 1680 768 769 772 794
ModeLine "1280x720" 74.160 1280 1352 1392 1648 720 725 730 750 -hsync -vsync
Modeline "1024x768" 61.90 1024 1080 1184 1344 768 769 772 794
Modeline "800x600" 36.90 800 832 912 1024 600 601 604 621
Modeline "640x480" 23.10 640 656 720 800 480 481 484 497
ModeLine "1280x720" 74.160 1280 1352 1392 1648 720 725 730 750 -hsync -vsync
Modeline "1280x768" 77.40 1280 1344 1480 1680 768 769 772 794
Modeline "1024x768" 61.90 1024 1080 1184 1344 768 769 772 794
Modeline "800x600" 36.90 800 832 912 1024 600 601 604 621
Modeline "640x480" 23.10 640 656 720 800 480 481 484 497
EndSection
Section "Screen"
DefaultDepth 24
SubSection "Display"
Depth 15
Modes "1280x720" "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x720" "1280x768" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x720" "1024x768" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 32
Modes "1280x720" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x720" "1024x768" "800x600" "640x480"
EndSubSection
Device "Device[0]"
Identifier "Screen[0]"
Monitor "Monitor[0]"
EndSection
Section "Device"
BoardName "GeForce 6600GT"
Driver "nvidia"
Identifier "Device[0]"
Screen 0
VendorName "NVidia"
Option "Coolbits" "1"
EndSection
Section "ServerLayout"
Identifier "Layout[all]"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "off"
Screen "Screen[0]"
EndSection
Section "DRI"
Group "video"
Mode 0660
EndSection
Section "Extensions"
EndSection
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01-08-2006, 08:27 AM
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#6
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LQ Newbie
Registered: Jan 2006
Posts: 5
Original Poster
Rep:
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Still no luck here... any other ideas?
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02-18-2006, 09:21 AM
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#7
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LQ Newbie
Registered: Jan 2006
Posts: 5
Original Poster
Rep:
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Just rebumped this thread to see if anyone has any more ideas...
I found that the xorg.0.log file is showing a line from the nvidia driver. It says that "Virtual resolution has been determined to be 1280x768".
That is clearly the problem. Any idea how I switch off that auto-detection? There is no virtual resolution set in the file 
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