External monitors are not detected

[Jose C. Massón]

Related to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1510021

Ubuntu 15.10 don't detect external monitors. Ubuntu 15.04 did it well.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-18-generic 4.2.0-18.22
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jose 1739 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Nov 11 19:41:45 2015
HibernationDevice: RESUME=UUID=c1967c1f-cf6a-49ac-95bf-5da28a8e0929
InstallationDate: Installed on 2015-11-11 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Apple Inc. MacBookPro8,1
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.2.0-18-generic.efi.signed root=UUID=a5b5f85d-0b2b-4591-a3e2-02f2c83525f7 ro rootflags=subvol=@
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-18-generic N/A
 linux-backports-modules-4.2.0-18-generic N/A
 linux-firmware 1.149.1
SourcePackage: linux
UdevLog: Error: [Errno 2] No existe el archivo o el directorio: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
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.

[Jose C. Massón (jose-masson)]

I'm running Ubuntu in a MacBookPro8,1

[Brad Figg (brad-figg)]

This change was made by a bot.

[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-wily/

[Locky (locky1138)]

I am having the same issue, on a Dell latitude e7450

I installed the latest upstream kernel:
 "Linux ***** 4.3.0-040300-generic #201511020949 SMP Mon Nov 2 14:50:44 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux"
which did not solve the problem.

[Jose C. Massón (jose-masson)]

With current kernel, do not works

[Jose C. Massón (jose-masson)]

With upstream kernel works. :D

[Jose C. Massón (jose-masson)]

Now the question is when the upstream kernel will be released ? ;-)

[penalvch (penalvch)]

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

As per https://support.apple.com/en-us/HT201518 an update to your computer's buggy and outdated BIOS is available (MBP81.0047.2AB (2015-001)). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it address the issue?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

Also, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status Confirmed. Otherwise, please mark this as Invalid.

Thank you for your understanding.

[penalvch (penalvch)]

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

Please feel free to subscribe me to it.

[Jose C. Massón (jose-masson)]

Christopher here is the new issue:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1517048

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]