After upgrade from vivid to wily external monitor has only limited resolutions

[Gareth Woolridge]

In Vivid on connection of external display using displayport to VGA adaptor all resolutions upto max of my monitor were supported.

Since upgrade to Wily while my internal display operates correctly the external display only shows resolutions up to 1024x768 as available, eg:

xrandr
Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767
eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 256mm x 144mm
   1366x768 60.00*+
   1360x768 59.80 59.96
   1280x720 60.00
   1024x768 60.00
   1024x576 60.00
   960x540 60.00
   800x600 60.32 56.25
   864x486 60.00
   640x480 59.94
   720x405 60.00
   680x384 60.00
   640x360 60.00
DP1 connected (normal left inverted right x axis y axis)
   1024x768 60.00
   800x600 60.32 56.25
   848x480 60.00
   640x480 59.94

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CurrentDesktop: MATE
Date: Mon Oct 26 10:00:40 2015
InstallationDate: Installed on 2015-07-29 (88 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to wily on 2015-10-22 (3 days ago)
---
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
BootLog:
 fsck from util-linux 2.26.2
 /dev/mapper/sda4_crypt: clean, 381687/6053888 files, 5930344/24196096 blocks
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: MATE
DistUpgraded: 2015-10-22 21:49:51,050 DEBUG enabling apt cron job
DistroCodename: wily
DistroRelease: Ubuntu 15.10
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.248+bdcom, 3.19.0-31-generic, x86_64: installed
 bcmwl, 6.30.223.248+bdcom, 4.2.0-16-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:00fd]
InstallationDate: Installed on 2015-07-29 (98 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
MachineType: Apple Inc. MacBookAir5,1
NonfreeKernelModules: wl
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=9a4f85f8-6215-4430-8874-d6c52eeea39c ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Tags: wily ubuntu
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
Uname: Linux 4.2.0-16-generic x86_64
UpgradeStatus: Upgraded to wily on 2015-10-22 (12 days ago)
UserGroups: adm cdrom dip libvirtd lpadmin mojo plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/08/2015
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA51.88Z.00EF.B03.1506081623
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-66F35F19FE2A0D05
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir5,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-66F35F19FE2A0D05
dmi.modalias: dmi:bvnAppleInc.:bvrMBA51.88Z.00EF.B03.1506081623:bd06/08/2015:svnAppleInc.:pnMacBookAir5,1:pvr1.0:rvnAppleInc.:rnMac-66F35F19FE2A0D05:rvrMacBookAir5,1:cvnAppleInc.:ct10:cvrMac-66F35F19FE2A0D05:
dmi.product.name: MacBookAir5,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Mon Oct 26 09:17:33 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 40976
 vendor APP
xserver.version: 2:1.17.2-1ubuntu9

[penalvch (penalvch)]

Gareth Woolridge, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1510021

Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information.

When reporting xorg related bugs in the future, please do so via the above method. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Maarten (maarten-dirkse)]

+1

[Maarten (maarten-dirkse)]

Little more context: I have the same issue and, like Gareth, am also using Ubuntu on Mac hardware (Macbook Pro in my case). That means the external monitor connects via a Thunderbolt port.

[Gareth Woolridge (moon127)]

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[Gareth Woolridge (moon127)]

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[Gareth Woolridge (moon127)]

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[Gareth Woolridge (moon127)]

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[Gareth Woolridge (moon127)]

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[Gareth Woolridge (moon127)]

Run as requested (with the MiniDP to VGA) adaptor connected.

Interestingly I tried this with a colleagues generic el cheapo MiniDP to {VGA,HDMI,DVI} adaptor and successfully got my monitors native resolution.

So for me at least it appears that the limited resolution issue only occurs with an official Apple MiniDP to VGA adaptor. But said adaptor worked fine in Vivid!

[Maarten (maarten-dirkse)]

Interesting indeed! Seeing as things worked fine in Vivid I'm assuming it's
some sort of kernel thing.
Thanks for adding the info.

Regards,
Maarten

On Wed, Nov 4, 2015 at 6:01 PM Gareth Woolridge <
<email address hidden>> wrote:

> Run as requested (with the MiniDP to VGA) adaptor connected.
>
> Interestingly I tried this with a colleagues generic el cheapo MiniDP to
> {VGA,HDMI,DVI} adaptor and successfully got my monitors native
> resolution.
>
> So for me at least it appears that the limited resolution issue only
> occurs with an official Apple MiniDP to VGA adaptor. But said adaptor
> worked fine in Vivid!
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1510021
>
> Title:
> After upgrade from vivid to wily external monitor has only limited
> resolutions
>
> Status in xorg package in Ubuntu:
> Incomplete
>
> Bug description:
> In Vivid on connection of external display using displayport to VGA
> adaptor all resolutions upto max of my monitor were supported.
>
> Since upgrade to Wily while my internal display operates correctly the
> external display only shows resolutions up to 1024x768 as available,
> eg:
>
> xrandr
> Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767
> eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y
> axis) 256mm x 144mm
> 1366x768 60.00*+
> 1360x768 59.80 59.96
> 1280x720 60.00
> 1024x768 60.00
> 1024x576 60.00
> 960x540 60.00
> 800x600 60.32 56.25
> 864x486 60.00
> 640x480 59.94
> 720x405 60.00
> 680x384 60.00
> 640x360 60.00
> DP1 connected (normal left inverted right x axis y axis)
> 1024x768 60.00
> 800x600 60.32 56.25
> 848x480 60.00
> 640x480 59.94
>
> ProblemType: Bug
> DistroRelease: Ubuntu 15.10
> Package: xorg 1:7.7+7ubuntu4
> ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
> Uname: Linux 4.2.0-16-generic x86_64
> NonfreeKernelModules: wl
> ApportVersion: 2.19.1-0ubuntu3
> Architecture: amd64
> CurrentDesktop: MATE
> Date: Mon Oct 26 10:00:40 2015
> InstallationDate: Installed on 2015-07-29 (88 days ago)
> InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release amd64
> (20150422.1)
> SourcePackage: xorg
> Symptom: display
> UpgradeStatus: Upgraded to wily on 2015-10-22 (3 days ago)
> ---
> ApportVersion: 2.19.1-0ubuntu4
> Architecture: amd64
> BootLog:
> fsck from util-linux 2.26.2
> /dev/mapper/sda4_crypt: clean, 381687/6053888 files, 5930344/24196096
> blocks
> CompizPlugins: No value set for
> `/apps/compiz-1/general/screen0/options/active_plugins'
> CompositorRunning: None
> CurrentDesktop: MATE
> DistUpgraded: 2015-10-22 21:49:51,050 DEBUG enabling apt cron job
> DistroCodename: wily
> DistroRelease: Ubuntu 15.10
> DistroVariant: ubuntu
> DkmsStatus:
> bcmwl, 6.30.223.248+bdcom, 3.19.0-31-generic, x86_64: installed
> bcmwl, 6.30.223.248+bdcom, 4.2.0-16-generic, x86_64: installed
> ExtraDebuggingInte...

[Maarten (maarten-dirkse)]

Output of "sudo apport-cli -f -p xorg --save bug.apport" on my machine.

[Jocelyn (akear)]

I had the same issue with a Dell XPS 13 and Apple MiniDP to VGA adapter. Updating to kernel 4.3.0 fixed it.

[penalvch (penalvch)]

Gareth Woolridge, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue.

If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where X, Y, and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix the issue, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream.

Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

[penalvch (penalvch)]

Maarten / Jocelyn Boullier, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.3 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

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

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-unstable/

[Jose C. Massón (jose-masson)]

.tmp.unity.support.test.0:

ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
DistUpgraded: Fresh install
DistroCodename: wily
DistroRelease: Ubuntu 15.10
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.248+bdcom, 4.2.0-16-generic, x86_64: installed
 bcmwl, 6.30.223.248+bdcom, 4.2.0-18-generic, x86_64: installed
 virtualbox, 5.0.4, 4.2.0-18-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:00db]
InstallationDate: Installed on 2015-11-11 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Apple Inc. MacBookPro8,1
NonfreeKernelModules: wl
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.2.0-18-generic.efi.signed root=UUID=a5b5f85d-0b2b-4591-a3e2-02f2c83525f7 ro rootflags=subvol=@
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Tags: wily ubuntu compiz-0.9
UdevLog: Error: [Errno 2] No existe el archivo o el directorio: '/var/log/udev'
Uname: Linux 4.2.0-18-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B27.1201241646
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245B3640C91C81
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245B3640C91C81
dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,1:pvr1.0:rvnAppleInc.:rnMac-94245B3640C91C81:rvrMacBookPro8,1:cvnAppleInc.:ct10:cvrMac-94245B3640C91C81:
dmi.product.name: MacBookPro8,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Wed Nov 11 19:13:25 2015
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 40139
 vendor APP
xserver.version: 2:1.17.2-1ubuntu9

[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

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[Jose C. Massón (jose-masson)]

I have updated the bios, for that I have to update OSX.

The bug is still reproducible with:

$ uname -a
Linux manolito 4.2.0-18-generic #22-Ubuntu SMP Fri Nov 6 18:25:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

The bios info:

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
MBP81.88Z.0047.B2A.1506082203
06/08/15

[penalvch (penalvch)]

Jose, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[Gareth Woolridge (moon127)]

Tested mainline and the Mini-DP to VGA adaptor behaved correctly allowing me 1920x1200 on my external display.

uname -a
Linux moon127-MacBookAir 4.3.0-040300-generic #201511020949 SMP Mon Nov 2 14:50:44 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
MBA51.88Z.00EF.B03.1506081623
06/08/2015

[penalvch (penalvch)]

Gareth Woolridge, the next step is to fully reverse commit bisect from kernel 4.2 to 4.3 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?

Please note, finding adjacent kernel versions is not fully commit bisecting.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Gareth Woolridge (moon127)]

Kernel bisecting:
We know it's fixed in 4.3.0-040300-201511020949

Stepping up through kernels:

Current wily kernel (with displayport issue):
4.2.0-17.21 Ubuntu-4.2.0-17.21 4.2.3

dist-upgrade gets us to:
4.2.0-18.22 Ubuntu-4.2.0-18.22 4.2.3 - same displayport issue

v4.2.6-wily - 4.2.6-040206.201511091832 - same displayport issue

v4.3-rc1-unstable - 4.3.0-040300rc1.201509160642 - displayport working correctly, eg 1920x1200 on external display.

[Launchpad Janitor (janitor)]

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