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Old 03-08-2009, 10:21 PM   #1
Matt_K
LQ Newbie
 
Registered: Mar 2009
Posts: 4

Rep: Reputation: 0
Graphical glitching with ATI HD 4850


I'm trying to fix a problem on my box, which is running Slackware 12.2. I noticed a lot of screen tearing when moving windows and especially during video playback. The video card is an ATI HD 4850 using the xf86-video-radeonhd driver, I've tried fglrx but the problem persists. Here's my xorg.conf:
Code:
Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	RgbPath      "/usr/share/X11/rgb"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "/usr/share/fonts/TTF"
	FontPath     "/usr/share/fonts/OTF"
	FontPath     "/usr/share/fonts/Type1"
	FontPath     "/usr/share/fonts/misc"
	FontPath     "/usr/share/fonts/75dpi/:unscaled"
EndSection

Section "Module"
	Load  "xtrap"
	Load  "extmod"
	Load  "glx"
	Load  "GLcore"
	Load  "dbe"
	Load  "dri"
	Load  "record"
	Load  "type1"
	Load  "freetype"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option       "XkbModel"  "pc101"
	Option       "XkbLayout"  "us"
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"
        ### [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>]
	Identifier  "Card0"
	Driver      "radeonhd"
	VendorName  "ATI Technologies Inc"
	BoardName   "Unknown Board"
	BusID       "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	DefaultDepth 24
	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
Any ideas on how to fix this?
 
Old 03-09-2009, 01:39 AM   #2
jdkaye
Senior Member
 
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 4,686

Rep: Reputation: Disabled
Hi Matt,
Are you satisfied that your "radeonhd" is the correct driver for your card? A lot of people (including) me use ATI cards on these forums and I haven't seen radeonhd before. I wonder about using "xf86-video-radeonhd driver" when your are using xorg and not xfree86. Have you tried xserver-xorg-video-radeonhd instead? That may be a better choice.
Cheers,
jdk
 
Old 03-09-2009, 04:12 PM   #3
Matt_K
LQ Newbie
 
Registered: Mar 2009
Posts: 4

Original Poster
Rep: Reputation: 0
"radeonhd"(http://www.x.org/wiki/radeonhd) is the driver that was set by the xorgsetup program on Slackware. The "radeon"(http://www.x.org/wiki/radeon) driver is supposed to support my card without video tearing, but X will not start at all when I set the driver to "ati" or "radeon"; it seems to only work with radeonhd and vesa.

EDIT: Nevermind, it seems that "radeon" doesn't actually support tear free video on R700 cards. I guess I'll just by a cheap Nvidia or older ATI card to use with Linux. Thanks for the help.

Last edited by Matt_K; 03-09-2009 at 04:16 PM.
 
  


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