Can't get x server to work after switching from nvidia to ati card

[pavelthesecond]

Hi,
I have just purchased a new radeon HD4850 card (my previous one was Geforce 8800GT), but I can't get the Xserver to work. It worked fine (including compiz-fusion) on the nvidia card and I'm writing this while running the nvidia card again.

I tried the instruction posted here http://forums.fedoraforum.org/showth...ighlight=fglrx (except I installed kmod-2.6.27.9-79 instead of akmod ones due to a bunch of other unrelated problems I won't go into at the moment for simplicity's sake) and as far as I can tell the drivers are installed correctly. However, the monitor goes completely black right after starting udev (but its still booting in the background because I can get to tty1 after about 30 sec). Alternatively, if I boot into text mode and then execute startx then it crashes immediately

(WW) fglrx: No matching Device section for instance (BusID PCI:0@2:0:1) found
Failed to set aperture, res=0x00000001
expected keysum, got XF86Info: line 914 of inet

looking at log file, there are no errors, so I am confused as to why the x server is crashing/no showing anything?

my xorg.conf file:

# Xorg configuration created by livna-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	ModulePath   "/usr/lib64/xorg/modules/extensions/fglrx"
	ModulePath   "/usr/lib64/xorg/modules"
EndSection

Section "ServerFlags"
	Option	    "AIGLX" "on"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "Emulate3Buttons" "no"
	Option	    "ZAxisMapping" "4 5"
EndSection

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

Section "Monitor"
	Identifier   "Monitor0"
	ModelName    "LCD Panel 1680x1050"
	HorizSync    31.5 - 65.5
	VertRefresh  56.0 - 65.0
	Option	    "dpms"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "fglrx"
	Option	    "OpenGLOverlay" "off"
	Option	    "VideoOverlay" "on"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
EndSection

Section "DRI"
	Mode         0666
EndSection

Section "Extensions"
	Option	    "Composite" "Enable"
EndSection

Any help would be really appreciated, I've spent well over 6 hours trying to fix this and its starting to become... problematic

[marcrblevins]

Try this?:
http://forums.fedoraforum.org/showthread.php?t=155503

[pavelthesecond]

yes, as I posted in the original thread I tried those instructions (the ones for F9)

[pavelthesecond]

Managed to get the X server to work by installing the official AMD drivers and then doing that trick with the i386 fglrx_dri.so thing to get compiz to work.
But now compiz starts with the indirect rendering option enabled and greyed out (so I can't turn it off). I read a few post here on people having the same problem but couldn't find any solutions (except reinstalling the drivers which I've already tried a bunch of times). Anybody managed to figure out this problem?

glxinfo:

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes

xorg.conf:

# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "aticonfig-Screen[0]-0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	ModulePath   "/usr/lib64/xorg/modules"
EndSection

Section "Module"
EndSection

Section "ServerFlags"
	Option	    "AIGLX" "on"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "Emulate3Buttons" "no"
	Option	    "ZAxisMapping" "4 5"
EndSection

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

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:2:0:0"
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[0]-0"
	Device     "aticonfig-Device[0]-0"
	Monitor    "aticonfig-Monitor[0]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "DRI"
	Mode         0666
EndSection

Section "Extensions"
	Option	    "Composite" "Enable"
EndSection