Public bug reported:
Multidisplay configuration randomly/unpredictably changes with each boot or
screen-unlock.
My configuration is thinkpad P50 with intel/nvidia hybrid display adapters.
"Internal" high-dpi 3840x2160px + "External" high-dpi 3840x2160px displays.
Configuration which I am trying to achieve is: both monitors in 1920x1080px
mode configured as extended desktop. This is mostly possible to achieve using
"Displays" tool even there are some strange behavior(for example changing
rotation of display when only switching resolution)
After almost each(let say 80%) boot and screen-unlock are display settings
randomly/unpredictably changed.
Some examples:
- both or one of monitor is set to native 3840x2160px resolution
- mirroring is set instead of extended desktop
- if kept in last correct 1920x1080px resolution then some weird panning is
applied for one of displays
- the same behavior occurs using any nvidia-XXX driver available in ubuntu or
launchpad repositories.
- nouveau driver seems to not support any multidisplay configuration
Description: Ubuntu 15.10
Release: 15.10
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: lightdm 1.16.7-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Mar 26 16:22:26 2016
InstallationDate: Installed on 2016-03-25 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug wily
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https://bugs.launchpad.net/bugs/1562335
Title:
Multidisplay configuration randomly/unpredictably changes with each
boot or screen-lock(screen-dim) recovery
Status in lightdm package in Ubuntu:
New
Bug description:
Multidisplay configuration randomly/unpredictably changes with each boot or
screen-unlock.
My configuration is thinkpad P50 with intel/nvidia hybrid display adapters.
"Internal" high-dpi 3840x2160px + "External" high-dpi 3840x2160px displays.
Configuration which I am trying to achieve is: both monitors in 1920x1080px
mode configured as extended desktop. This is mostly possible to achieve using
"Displays" tool even there are some strange behavior(for example changing
rotation of display when only switching resolution)
After almost each(let say 80%) boot and screen-unlock are display settings
randomly/unpredictably changed.
Some examples:
- both or one of monitor is set to native 3840x2160px resolution
- mirroring is set instead of extended desktop
- if kept in last correct 1920x1080px resolution then some weird panning is
applied for one of displays
- the same behavior occurs using any nvidia-XXX driver available in ubuntu or
launchpad repositories.
- nouveau driver seems to not support any multidisplay configuration
Description: Ubuntu 15.10
Release: 15.10
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: lightdm 1.16.7-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Mar 26 16:22:26 2016
InstallationDate: Installed on 2016-03-25 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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