Public bug reported:
After kernel update to 3.13.0-143, my second monitor stopped working and
was no longer detected. Reverting to 3.13.0-142 fixed the problem.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-142-generic 3.13.0-142.191
ProcVersionSignature: Ubuntu 3.13.0-142.191-generic 3.13.11-ckt39
Uname: Linux 3.13.0-142-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: arthur 2709 F.... pulseaudio
/dev/snd/controlC0: arthur 2709 F.... pulseaudio
CurrentDesktop: KDE
Date: Thu Mar 8 21:25:35 2018
HibernationDevice: RESUME=UUID=42a1f364-19f8-4690-81ba-8c97b8f1afa4
InstallationDate: Installed on 2012-06-12 (2096 days ago)
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120423)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: System manufacturer System Product Name
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-142-generic
root=UUID=4dea4806-cb28-4556-949b-077dbda4b9ae ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-142-generic N/A
linux-backports-modules-3.13.0-142-generic N/A
linux-firmware 1.127.24
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-07-04 (1344 days ago)
dmi.bios.date: 08/02/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1304
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: SABERTOOTH X58
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1304:bd08/02/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnSABERTOOTHX58:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug third-party-packages trusty
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https://bugs.launchpad.net/bugs/1754551
Title:
Kernel 3.13.0-143 breaks multi-monitor support
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