Regression over Karmic on detection of physical screen size and resolution

Binary package hint: xorg

On a Dell E6500 with intel graphics and a 1920x1080 panel, with kubuntu.

On Karmic, xorg was detecting the correct physical screen size (about 30cm x 20cm) and resolution and thus setting the dots-per-inch correctly.

On Lucid, the physical screen size is set at over 50cm x 32cm to always give a dpi of 96, which gives ridiculously small fonts on this machine. The xorg log indicates

(II) intel(0): Setting screen physical size to 508 x 317

please, avoid hardwiring the dpi to 96 since it makes no sense at all. Why should my laptop believe that it has a screen as big as a huge TV set?

If there are machines where edid reports incorrect data, then default to having some reasonable dpi there, but provide a means so that one can specify to use edid on his machine.

If this is an upstream bug with intel graphics, please be so kind to report upstream.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Sat May 1 12:40:03 2010
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: Dell Inc. Latitude E6500
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-21-generic root=/dev/mapper/group00-root ro quiet splash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 10/30/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A18
dmi.board.name: 0W612R
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA18:bd10/30/2009:svnDellInc.:pnLatitudeE6500:pvr:rvnDellInc.:rn0W612R:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6500
dmi.sys.vendor: Dell Inc.
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.32-21-generic