Getting dual monitors to work on Gnome 2.26.1

[Puvi Ganeshar <puvismail gmail com>]

Hello All,

I am trying to get dual monitors (2 identical HP L1940T) working on my machine but I am not having any luch at all.

I am not having the 2 screens as one virtual screen as it's mirroring one other currently.

I go to System -> Preferences -> Display, I can see the "Mirror screens" check box checked.  So I uncheck this box and click Apply, then I get a pop-up saying
"Monitor Resolution Settings has detected that the virtual resolution must be set in your configuration file in order to apply your settings.

Would you like Screen Resolution to set the virtual resolution for you? (Recommended"

When I answer "Yes" to this and get the following error:

"Your settings cannot be applied because the virtual resolution is not big enough to contain your screens"

So I am really stuck at this point so I turned to Google for help and found there are couple of people had the same problem but unfortunately the found no resolution.

I was wondering whether any of you guys will be able to help me resolve this issue.

Here are the details.

Gnome version = 2.26.1
OS = 9.04
Graphics Card = ATI Technologies Inc RV515GL [FireGL V3300]
Monitor = HP L1940T at 1280 X 1024 at 60Hz
Drivers Used: ( from /proc/modules )
radeon 342816 2 - Live 0xf81c0000
drm 96296 3 radeon, Live 0xf7eb8000
agpgart 42696 1 drm, Live 0xf7cf2000


Result of sudo lspci -vvnn
=================

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV515GL [FireGL V3300] (Primary) [1002:7152]
    Subsystem: ATI Technologies Inc Device [1002:1b02]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M]
    Region 2: Memory at e0a00000 (64-bit, non-prefetchable) [size=64K]
    Region 4: I/O ports at 2000 [size=256]
    [virtual] Expansion ROM at e0000000 [disabled] [size=128K]
    Capabilities: [50] Power Management version 2
        Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
        Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [58] Express (v1) Endpoint, MSI 00
        DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
            ExtTag+ AttnBtn- AttnInd- PwrInd- RBE- FLReset-
        DevCtl: Report errors: Correctable- Non-Fatal- Fatal+ Unsupported-
            RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 128 bytes
        DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
        LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1 <1us
            ClockPM- Suprise- LLActRep- BwNot-
        LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
            ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
        LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
    Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
        Address: 0000000000000000  Data: 0000

01:00.1 Display controller [0380]: ATI Technologies Inc RV515GL [FireGL V3300] (Secondary) [1002:7172]
    Subsystem: ATI Technologies Inc Device [1002:1b03]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Region 0: Memory at e0a10000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [50] Power Management version 2
        Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
        Status: D0 PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [58] Express (v1) Endpoint, MSI 00
        DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
            ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-
        DevCtl: Report errors: Correctable- Non-Fatal- Fatal+ Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
            MaxPayload 128 bytes, MaxReadReq 128 bytes
        DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
        LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1 <1us
            ClockPM- Suprise- LLActRep- BwNot-
        LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
            ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
        LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-


Also can anyone please tell me what is the configuration file Xorg uses these days?  My /etc/X11/xorg.conf doesn't have much info at all, this is all I could find in there:
Section "Device"
    Identifier    "Configured Video Device"
    Option        "UseFBDev"        "true"
EndSection

Section "Monitor"
    Identifier    "Configured Monitor"
EndSection

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


Thanks in advance.


-- 
~Puvi