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View Full Version : mac pro dual monitors tearing


jokr004
February 28th, 2008, 09:41 PM
I've installed ubuntu 7.10 on an 8 core mac pro with a ATI Radeon HD 2600 XT graphics card. I installed the proprietary ATI driver and configured dual monitors with xinerama, the monitor on the left 1280x1024 and the right one 1600x1200. The problem is that when I have windows on the left monitor, I get horrible tearing when I move windows. Does anyone know why this might happen?


Here's a copy of my xorg.conf
# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"

# Uncomment if you have a wacom tablet
# InputDevice "stylus" "SendCoreEvents"
# InputDevice "cursor" "SendCoreEvents"
# InputDevice "eraser" "SendCoreEvents"
Identifier "Default Layout"
Screen 0 "Default Screen" 0 0
Screen 1 "aticonfig-Screen[1]" LeftOf "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "Files"
EndSection

Section "Module"
Load "glx"
Load "dbe"
Load "v4l"
EndSection

Section "ServerFlags"
Option "Xinerama" "true"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
EndSection

Section "InputDevice"
Identifier "stylus"
Driver "wacom"
Option "Device" "/dev/input/wacom"
Option "Type" "stylus"
Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
Identifier "eraser"
Driver "wacom"
Option "Device" "/dev/input/wacom"
Option "Type" "eraser"
Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "InputDevice"
Identifier "cursor"
Driver "wacom"
Option "Device" "/dev/input/wacom"
Option "Type" "cursor"
Option "ForceDevice" "ISDV4"# Tablet PC ONLY
EndSection

Section "Monitor"
Identifier "DELL E772c"
VendorName "Generic LCD Display"
ModelName "LCD Panel 1600x1200"
HorizSync 31.5 - 74.7
VertRefresh 56.0 - 65.0
Gamma 1
ModeLine "640x480@60" 25.2 640 656 752 800 480 490 492 525 -hsync -vsync
ModeLine "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
ModeLine "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
ModeLine "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
ModeLine "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
ModeLine "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
ModeLine "1400x1050@60" 122.6 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
ModeLine "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[1]"
VendorName "Generic LCD Display"
ModelName "LCD Panel 1280x1024"
HorizSync 31.5 - 64.0
VertRefresh 56.0 - 65.0
Gamma 1
ModeLine "640x480@60" 25.2 640 656 752 800 480 490 492 525 -hsync -vsync
ModeLine "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
ModeLine "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
ModeLine "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
ModeLine "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
ModeLine "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
EndSection

Section "Device"
Identifier "ATI Technologies Inc ATI Default Card"
Driver "fglrx"
BoardName "ati"
Option "DisplayPriority" "auto"
Option "PairModes" ""
BusID "PCI:2:0:0"
EndSection

Section "Device"
Identifier "aticonfig-Device[1]"
Driver "fglrx"
BoardName "ati"
Option "DisplayPriority" "auto"
BusID "PCI:2:0:0"
Screen 1
EndSection

Section "Screen"
Identifier "Default Screen"
Device "ATI Technologies Inc ATI Default Card"
Monitor "DELL E772c"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1600x1200@60" "1400x1050@60" "1280x1024@60" "1280x960@60" "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[1]"
Device "aticonfig-Device[1]"
Monitor "aticonfig-Monitor[1]"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024@60" "1280x960@60" "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
EndSubSection
EndSection

Section "Extensions"
Option "Composite" "0"
EndSection