[RV280] Karmic: Nokia Multigraph 445Xpro monitor not correctly detected, full resolution not supported

Binary package hint: xorg

Monitor is Nokia Multigraph 445Xpro 21", capable of resolutions up to 2048 x1536.
Under 9.04 the monitor was correctly detected, but max resolution was limited to 1600x1200.
After upgrade to 9.10: It is detected as Nokia 19" monitor, right after upgrade the
max resolution or 2048 x 1536 was supported (note while desktop effects caused all windows
to be black, it worked fine with desktop effects disabled).
After latest update, max resolution offered is now 1280 x 1024, the monitor is still
incorrectly detected as Nokia 19".

Finding Technical Specs on this monitor is tough now, I did come up with:

Aspect Ratio 5:4
Max. Resolution 1800 x 1440

Resolutions supported 1280 x 1024 • 1600 x 1200 • 1800 x 1350 •
                    1800 x 1440 • 640 x 480 • 800 x 600
Sync Range - Vertical 50 - 150 Hz
Sync Range - Horizontal 30 - 121 kHz
Dot Pitch 0.21 mm
Native Resolution 1800 x 1440

While it claims max resolution of 1800 x 1440, I can drive at higher resolution
from Win2k, and it was working, albeit briefly, at a higher resolution under karmic.

$ lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV280 [Radeon 9200 PRO] [1002:5960] (rev 01)

$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1360 x 1360
VGA-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 387mm x 290mm
   1280x1024 85.0 75.0 60.0*
   1280x960 85.0 60.0
   1360x768 59.8
   1152x864 100.0 85.1 85.0 75.0 75.0 70.0 60.0
   1024x768 85.0 75.0 70.1 60.0 43.5
   832x624 74.6
   800x600 85.1 72.2 75.0 60.3 56.2
   640x480 85.0 75.0 72.8 75.0 66.7 59.9
   720x400 87.8 85.0 70.1
   640x400 85.1
   640x350 85.1
DVI-0 disconnected (normal left inverted right x axis y axis)
S-video disconnected (normal left inverted right x axis y axis)

$ sudo ddcprobe
[sudo] password for a:
sudo: ddcprobe: command not found

There was no xorg.conf found in /etc/X11

ProblemType: Bug
Architecture: i386
Date: Mon Nov 2 19:46:57 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Hewlett-Packard HP d530 SFF(DU658C)
Package: xorg 1:7.4+3ubuntu7
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=c563db44-8588-4dd5-8a6c-b065a95280b7 ro quiet splash
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu7
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg
Uname: Linux 2.6.31-14-generic i686
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 08/07/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786B2 v2.44
dmi.board.name: 085Ch
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: USU4350RDB
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786B2v2.44:bd08/07/2008:svnHewlett-Packard:pnHPd530SFF(DU658C):pvr:rvnHewlett-Packard:rn085Ch:rvr:cvnHewlett-Packard:ct4:cvr:
dmi.product.name: HP d530 SFF(DU658C)
dmi.sys.vendor: Hewlett-Packard
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.31-14-generic