Regression in resolution support MiniDP port -> DVI

[Beanow]

Using a MiniDP to DVI (active) adapter my native resolution was obtainable (1980*1080) up untill the update this morning.
The updates of this morning included:
linux-image-3.0.0-16-generic (install)
linux-headers-3.0.0-16 (install)
linux-generic (3.0.0.15.17, 3.0.0.16.19) (update)
indicator-multiload (update)
linux-headers-generic (3.0.0.15.17, 3.0.0.16.19) (update)
linux-image-generic (3.0.0.15.17, 3.0.0.16.19) (update)
linux-doc (3.0.0.15.17, 3.0.0.16.19) (update)
linux-libc-dev (3.0.0.15.17, 3.0.0.16.19) (update)

Now the maximum resolution available for this connector is 1440*900.
Which used to be the case about 1,5 month ago as well.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7.1
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,regex,gnomecompat,compiztoolbox,imgpng,move,animation,snap,grid,vpswitch,resize,unitymtgrabhandles,mousepoll,place,expo,workarounds,wall,ezoom,session,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon Feb 13 11:02:25 2012
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:04b6]
 nVidia Corporation Device [10de:0df5] (rev ff) (prog-if ff)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Dell Inc. Dell System XPS L502X
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-16-generic root=UUID=129a2b97-b7eb-43dd-9bde-8652db38f6da ro quiet splash pcie_aspm=force vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/20/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0YR8NN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd10/20/2011:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0YR8NN:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L502X
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.3 kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed by the mainline kernel, please add the following tag 'kernel-fixed-upstream-KERNEL-VERSION'. For example, if kernel version 3.3-rc2 fixed the issue, the tag would be: 'kernel-fixed-upstream-v3.3-rc2'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc2-precise/

[Beanow (beanow)]

You linked the precise kernel, do you want me to test that even though I'm running oneiric?
In the mainline directory the ones that look most recent are:
3.3 RC 3 - precise
3.2 RC 4 - oneiric

[Joseph Salisbury (jsalisbury)]

Yes, it would be great if you could test the latest v3.3 kernel, available at:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc3-precise/

[Beanow (beanow)]

Took me a long time but finally got to testing this.
In the v3.3-precise kernel the native resolution IS detected in System Settings > Displays, but I cannot apply any changes from there.

Using `xrandr --auto --output DP1 --mode 1920x1080 --right-of LVDS1`
Does work however.

[Julian Wiedmann (jwiedmann)]

This does sound like bug 899598, marking as duplicate.