Using secondary monitors with modesetting driver causes system crash
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
Setup:
1. Use modesetting driver for X11.
2. Enable a secondary monitor, either VGA, HDMI or DisplayPort.
Observe:
a. Screen flickers, loses hsync, goes weird every few seconds.
b. After a few minutes, system freezes, no logs, no recovery, no nothing, but display still on screen.
Workaround:
Switching to intel driver system still crashes, but less often, and differently.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: XFCE
Date: Sun Jul 3 16:13:54 2016
HibernationDevice: RESUME=
InstallationDate: Installed on 2015-05-18 (412 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
MachineType: LENOVO 20CKCT01WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.157.1
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-06-23 (10 days ago)
dmi.bios.date: 08/20/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N11ET34W (1.10 )
dmi.board.
dmi.board.name: 20CKCT01WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98417 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20CKCT01WW
dmi.product.
dmi.sys.vendor: LENOVO
This change was made by a bot.