Public bug reported:
I upgraded my Karmic kernel from 2.6.30-13 to 2.6.31-1, which caused
high resolution to stop being detected. Despite the external monitor
having a native resolution of 1920 x 1200, xrandr reports only a max
resolution of 1280 x 1024:
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2048 x 2048
VGA1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 519mm x
324mm
1280x1024 75.0*
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS1 connected 1280x768+0+0 (normal left inverted right x axis y axis) 264mm x
159mm
1280x768 59.9*
0x0 0.0
TV1 disconnected (normal left inverted right x axis y axis)
I can confirm the regression by going back to the still installed 2.6.30
kernel, which works as expected. I was inclined to report this problem
to bug 391720, but their problem is with 2.6.30 rather than 2.6.31.
ProblemType: Bug
Architecture: i386
Date: Wed Jul 1 09:27:25 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=500a11a1-86bd-4609-96ca-78797dfb772b
MachineType: Dell Inc. Latitude X1
Package: linux-image-2.6.31-1-generic 2.6.31-1.13
ProcCmdLine: root=UUID=b17e1aff-9f02-4fbd-81e5-9b1e6899baad ro quiet splash
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-1.13-generic
RelatedPackageVersions:
SourcePackage: linux
Uname: Linux 2.6.31-1-generic i686
dmi.bios.date: 04/05/2005
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0G6951
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA02:bd04/05/2005:svnDellInc.:pnLatitudeX1:pvr:rvnDellInc.:rn0G6951:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude X1
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
2.6.31-1 does not detect high resolutions
https://bugs.launchpad.net/bugs/394154
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