Can't start X with Radeon cards

[Jason Kim]

Hello,

X version:   X11R7.0
Video cards: Three radeon 7000 cards 
            (1 AGP and 2 PCI, multi-heads Xinerama configuration)

Problem:
I can't start X with multiple radeon cards, same configuration was
working well with X11R6.8.2  by the way.

Here is the log and xorg.conf.  

**** part of Xorg.0.log ****
...

(EE) RADEON(1): Cannot read V_BIOS
Requesting insufficient memory window!: start: 0xd0000000 end:
0xd7ffffff size 0xed020000
Requesting insufficient memory window!: start: 0xed000000 end:
0xeeffffff size 0xed020000
Requesting insufficient memory window!: start: 0xd0000000 end:
0xd7ffffff size 0xed020000
Requesting insufficient memory window!: start: 0xed000000 end:
0xeeffffff size 0xed020000
Requesting insufficient memory window!: start: 0xd0000000 end:
0xd7ffffff size 0xed020000
Requesting insufficient memory window!: start: 0xed000000 end:
0xeeffffff size 0xed020000
(EE) RADEON(2): Cannot read V_BIOS
Requesting insufficient memory window!: start: 0xd0000000 end:
0xd7ffffff size 0xed020000
Requesting insufficient memory window!: start: 0xed000000 end:
0xeeffffff size 0xed020000
Requesting insufficient memory window!: start: 0xd0000000 end:
0xd7ffffff size 0xed020000
Requesting insufficient memory window!: start: 0xed000000 end:
0xeeffffff size 0xed020000
(EE) RADEON(1): Idle timed out, resetting engine...
(EE) RADEON(1): Idle timed out, resetting engine...
(EE) RADEON(1): Idle timed out, resetting engine...
(EE) RADEON(1): Idle timed out, resetting engine...
(EE) RADEON(1): Idle timed out, resetting engine...

...


*****xorg.conf*****

Section "Files"
        FontPath        "unix/:7100"
EndSection

Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
EndSection

###########
# keyboard
###########
Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option "XkbLayout" "us"
        Option "XkbModel" "pc105"
EndSection

########
# mouse
########
Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Device" "/dev/input/mice"
        Option      "Protocol" "ImPS/2"
        Option      "Emulate3Buttons" "off"
        Option      "ZAxisMapping" "4 5"
EndSection

##########
# Monitor
##########
Section "Monitor"
        Identifier "Monitor"
        VendorName "Monitor Vendor"
        ModelName "Monitor Model"
        HorizSync 28-78
        VertRefresh 43-75
EndSection

#########
# Device
#########
Section "Device"
        Identifier "Videocard0"
        Driver "radeon"
        VendorName ""
        BoardName "ATI Radeon 7000"
        BusID "PCI:0:8:0"        
EndSection
Section "Device"
        Identifier "Videocard1"
        Driver "radeon"
        VendorName ""
        BoardName "ATI Radeon 7000"
        BusID "PCI:0:9:0"        
EndSection
Section "Device"
        Identifier "Videocard2"
        Driver "radeon"
        VendorName ""
        BoardName "ATI Radeon 7000"
        BusID "PCI:1:0:0"	
EndSection

#################
# Screen section
#################
Section "Screen"
        Identifier "Screen0"
        Device "Videocard0"
        Monitor "Monitor"
        DefaultDepth 16
        SubSection "Display"
                Depth 8
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 15
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 16
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 24
                Modes "640x480"
        EndSubSection
EndSection
Section "Screen"
        Identifier "Screen1"
        Device "Videocard1"
        Monitor "Monitor"
        DefaultDepth 16
        SubSection "Display"
                Depth 8
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 15
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 16
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 24
                Modes "640x480"
        EndSubSection
EndSection
Section "Screen"
        Identifier "Screen2"
        Device "Videocard2"
        Monitor "Monitor"
        DefaultDepth 16
        SubSection "Display"
                Depth 8
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 15
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 16
                Modes "640x480"
        EndSubSection
        SubSection "Display"
                Depth 24
                Modes "640x480"
        EndSubSection
EndSection

#######################
# Server Layout section
#######################
Section "ServerLayout"
        Identifier     "xorg.conf"
        Screen "Screen0"
        Screen "Screen1" RightOf "Screen0"
        Screen "Screen2" RightOf "Screen1"
        InputDevice     "Keyboard0"     "CoreKeyboard"
        InputDevice     "Mouse0"        "CorePointer"
        Option "Xinerama" "on"
EndSection