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 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs