Артефакты не понятного происхождения на мониторе.

[[email protected] ~]$ uname -a
Linux ungaminga-U210 2.6.37-ARCH #1 SMP PREEMPT Fri Feb 25 09:07:57 UTC 2011 i686 AMD Athlon(tm) Neo Processor MV-40 AuthenticAMD GNU/Linux

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "/usr/share/fonts/misc/"
	FontPath     "/usr/share/fonts/TTF/"
	FontPath     "/usr/share/fonts/OTF/"
	FontPath     "/usr/share/fonts/Type1/"
	FontPath     "/usr/share/fonts/100dpi/"
	FontPath     "/usr/share/fonts/75dpi/"
EndSection
Section "Module"
#	Load  "drm"
	Load  "dbe"
	Load  "dri"
	Load  "dri2"
	Load  "extmod"
	Load  "glx"
	Load  "record"
EndSection
Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection
Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection
Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "NoAccel"            	# [<bool>]
        #Option     "AccelMethod"        	# [<str>]
        #Option     "offscreensize"      	# [<str>]
        #Option     "SWcursor"           	# [<bool>]
        #Option     "ignoreconnector"    	# [<str>]
        #Option     "forcereduced"       	# [<bool>]
        #Option     "forcedpi"           	# <i>
        #Option     "useconfiguredmonitor" 	# [<bool>]
        #Option     "HPD"                	# <str>
        #Option     "NoRandr"            	# [<bool>]
        #Option     "RROutputOrder"      	# [<str>]
        #Option     "DRI"                	# [<bool>]
        #Option     "TVMode"             	# [<str>]
        #Option     "ScaleType"          	# [<str>]
        #Option     "UseAtomBIOS"        	# [<bool>]
        #Option     "AtomBIOS"           	# [<str>]
        #Option     "UnverifiedFeatures" 	# [<bool>]
        #Option     "Audio"              	# [<bool>]
        #Option     "AudioStreamSilence" 	# [<str>]
        #Option     "HDMI"               	# [<str>]
        #Option     "COHERENT"           	# [<str>]
        #Option     "ForceLowPowerMode"  	# [<bool>]
        #Option     "LowPowerModeEngineClock" 	# <i>
	Identifier  "Card0"
        Option      "DRI" "on" 
#        Option      "DynamicPM" "on"      # Динамический режим экномии питания.
#        Option      "ClockGating" "on"    # Сопутствующие опции для режима экномии питания.
#        Option      "AccelMethod" "EXA"   # EXA должна быть включена в большинстве случаев.
#        Option      "EXAVSync" "on"       # EXAVSync описано выше.
#        Option      "DMAForXv" "on"       # Принудительная опция, дополнение к включению Xv.
#        Option      "ScalerWidth" "2048"  # Поможет решить несколько очень редких ошибок.
#        Option      "EnablePageFlip" "on" # Это не должно быть включено на картах R5xx.
#        Option      "RenderAccel" "on"    # Опционально. Это должно быть включено по умолчанию.
#        Option      "AccelDFS" "on"       # Опционально. Смотрите страницы man.
#        Option      "BusType"    "PCIE"
	Driver      "radeonhd"
	BusID       "PCI:1:5:0"
EndSection
Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection