My graphics card, an ATI radeon 9500 has gone to graphicscardheaven
With this card 3d acceleeration and Compiz worked fine in Hardy.

I replaced this card with an ATI Radeon HD2600 pro agp. (RV630)
Now when using the restricted driver the screen goes black after startup and before the login.

When I use the command
Code:
sudo dpkg-reconfigure -phigh xserver-xorg
the restricted driver is uninstalled and the xorg.conf looks like this:

Code:
# xorg.conf (X.Org 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 "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "kbd"
        Option          "XkbRules"      "xorg"
        Option          "XkbModel"      "pc105"
        Option          "XkbLayout"     "be"
        Option          "XkbOptions"    "lv3:ralt_switch"
EndSection

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
EndSection

Section "Device"
        Identifier      "Configured Video Device"
EndSection

Section "Monitor"
        Identifier      "Configured Monitor"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Monitor         "Configured Monitor"
        Device          "Configured Video Device"
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
EndSection
fglrxinfo returns the fololwing:

Code:
display: :0.0  screen: 0
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.4 (2.1 Mesa 7.0.3-rc2)
lshw returns the following:

Code:
description: Computer
    width: 32 bits
  *-core
       description: Motherboard
       physical id: 0
     *-generic UNCLAIMED
          physical id: 2008
          bus info: parisc@2008
        *-generic:0 UNCLAIMED
             physical id: 2
             bus info: parisc@02
           *-generic UNCLAIMED
                physical id: 1
                bus info: parisc@01
        *-generic:1 UNCLAIMED
             physical id: 4
             bus info: parisc@04
           *-generic UNCLAIMED
                physical id: 5
                bus info: parisc@05
     *-memory
          description: System memory
          physical id: 0
          size: 511MiB
     *-cpu
          product: AMD Athlon(TM) MP 2400+
          vendor: Advanced Micro Devices [AMD]
          physical id: 1
          bus info: cpu@0
          version: 6.8.1
          size: 2GHz
          width: 32 bits
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow up ts
        *-cache:0
             description: L1 cache
             physical id: 0
             size: 128KiB
        *-cache:1
             description: L2 cache
             physical id: 1
             size: 256KiB
     *-pci
          description: Host bridge
          product: VT8377 [KT400/KT600 AGP] Host Bridge
          vendor: VIA Technologies, Inc.
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 80
          width: 32 bits
          clock: 66MHz
          configuration: driver=agpgart-via module=via_agp
        *-pci
             description: PCI bridge
             product: VT8237 PCI Bridge
             vendor: VIA Technologies, Inc.
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 00
             width: 32 bits
             clock: 66MHz
             capabilities: pci normal_decode bus_master cap_list
           *-display UNCLAIMED
                description: VGA compatible controller
                product: RV630 [Radeon HD 2600 AGP Series]
                vendor: ATI Technologies Inc
                physical id: 0
                bus info: pci@0000:01:00.0
                version: 00
                width: 32 bits
                clock: 66MHz
                capabilities: vga_controller bus_master cap_list
                configuration: latency=64 mingnt=8
        *-network
             description: Ethernet interface
             product: 88E8001 Gigabit Ethernet Controller
             vendor: Marvell Technology Group Ltd.
             physical id: 9
             bus info: pci@0000:00:09.0
             logical name: eth0
             version: 13
             serial: 00:0e:a6:92:e0:fd
             width: 32 bits
             clock: 66MHz
             capabilities: bus_master cap_list ethernet physical
             configuration: broadcast=yes driver=skge driverversion=1.13 firmware=N/A ip=192.168.1.2 latency=32 maxlatency=31 mingnt=23 module=skge multicast=yes
        *-firewire
             description: FireWire (IEEE 1394)
             product: FW323
             vendor: Agere Systems
             physical id: b
             bus info: pci@0000:00:0b.0
             version: 61
             width: 32 bits
             clock: 33MHz
             capabilities: ohci bus_master cap_list
             configuration: driver=ohci1394 latency=32 maxlatency=24 mingnt=12 module=ohci1394
        *-storage
             description: RAID bus controller
             product: VIA VT6420 SATA RAID Controller
             vendor: VIA Technologies, Inc.
             physical id: f
             bus info: pci@0000:00:0f.0
             version: 80
             width: 32 bits
             clock: 33MHz
             capabilities: storage bus_master cap_list
             configuration: driver=sata_via latency=32 module=sata_via
        *-ide
             description: IDE interface
             product: VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE
             vendor: VIA Technologies, Inc.
             physical id: f.1
             bus info: pci@0000:00:0f.1
             version: 06
             width: 32 bits
             clock: 33MHz
             capabilities: ide bus_master cap_list
             configuration: driver=pata_via latency=32 module=pata_via
        *-usb:0
             description: USB Controller
             product: VT82xxxxx UHCI USB 1.1 Controller
             vendor: VIA Technologies, Inc.
             physical id: 10
             bus info: pci@0000:00:10.0
             version: 81
             width: 32 bits
             clock: 33MHz
             capabilities: uhci bus_master cap_list
             configuration: driver=uhci_hcd latency=32 module=uhci_hcd
        *-usb:1
             description: USB Controller
             product: VT82xxxxx UHCI USB 1.1 Controller
             vendor: VIA Technologies, Inc.
             physical id: 10.1
             bus info: pci@0000:00:10.1
             version: 81
             width: 32 bits
             clock: 33MHz
             capabilities: uhci bus_master cap_list
             configuration: driver=uhci_hcd latency=32 module=uhci_hcd
        *-usb:2
             description: USB Controller
             product: VT82xxxxx UHCI USB 1.1 Controller
             vendor: VIA Technologies, Inc.
             physical id: 10.2
             bus info: pci@0000:00:10.2
             version: 81
             width: 32 bits
             clock: 33MHz
             capabilities: uhci bus_master cap_list
             configuration: driver=uhci_hcd latency=32 module=uhci_hcd
        *-usb:3
             description: USB Controller
             product: VT82xxxxx UHCI USB 1.1 Controller
             vendor: VIA Technologies, Inc.
             physical id: 10.3
             bus info: pci@0000:00:10.3
             version: 81
             width: 32 bits
             clock: 33MHz
             capabilities: uhci bus_master cap_list
             configuration: driver=uhci_hcd latency=32 module=uhci_hcd
        *-usb:4
             description: USB Controller
             product: USB 2.0
             vendor: VIA Technologies, Inc.
             physical id: 10.4
             bus info: pci@0000:00:10.4
             version: 86
             width: 32 bits
             clock: 33MHz
             capabilities: ehci bus_master cap_list
             configuration: driver=ehci_hcd latency=32 module=ehci_hcd
        *-isa
             description: ISA bridge
             product: VT8237 ISA bridge [KT600/K8T800/K8T890 South]
             vendor: VIA Technologies, Inc.
             physical id: 11
             bus info: pci@0000:00:11.0
             version: 00
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master cap_list
             configuration: latency=0
        *-multimedia
             description: Multimedia audio controller
             product: VT8233/A/8235/8237 AC97 Audio Controller
             vendor: VIA Technologies, Inc.
             physical id: 11.5
             bus info: pci@0000:00:11.5
             version: 60
             width: 32 bits
             clock: 33MHz
             capabilities: cap_list
             configuration: driver=VIA 82xx Audio latency=0 module=snd_via82xx
        *-communication UNCLAIMED
             description: Communication controller
             product: AC'97 Modem Controller
             vendor: VIA Technologies, Inc.
             physical id: 11.6
             bus info: pci@0000:00:11.6
             version: 80
             width: 32 bits
             clock: 33MHz
             capabilities: cap_list
             configuration: latency=0
When Compiz turned on, the screen goes white and I have to rest by using ALT-F2 and metacity --replace.

I also reinstalled Hardy from scratch but that didn't help.

At http://www2.ati.com/drivers/linux/ca..._86_linux.html this note looks promissing:
Note: AGP variants for the ATI Radeon™ HD 2400 and 2600 series of products is now supported with this release of the AMD Proprietary Linux driver.
How do I install this driver and do I risk to ruin my system?