Comment 0 for bug 1724911

After upgrading my laptop to Ubuntu 17.10, I am unable to access gettys on any of the text-mode VTs on my system.

gdm3 is running on VT1, my user session is running on VT2. I can switch between these. If I switch to VT3, I know that the VT switch has happened in the kernel because the X cursor disappears; but the display retains the output of my X session, and the text console with getty never appears.

Switching back to VT2 works fine.

The same problem occurs with either Wayland or X.

My laptop is docked with an external monitor, which could be a factor. (I also notice that during boot, plymouth is only rendered on the internal monitor, not the external monitor; this may be related). I have not yet tested whether this problem is reproducible if I undock.

The system is booting with vt.handoff=7, which I believe is still the default in Ubuntu 17.10.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-16-generic 4.13.0-16.19
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: vorlon 24080 F.... pulseaudio
 /dev/snd/controlC0: vorlon 24080 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 19 09:57:59 2017
HibernationDevice: RESUME=UUID=6df76279-19ea-45a4-bec9-e4fdc858729a
InstallationDate: Installed on 2010-09-24 (2582 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: LENOVO 2306CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-generic.efi.signed root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.13.0-16-generic N/A
 linux-backports-modules-4.13.0-16-generic N/A
 linux-firmware 1.169
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to artful on 2017-10-19 (0 days ago)
dmi.bios.date: 10/25/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET97WW (2.57 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2306CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X230
dmi.product.name: 2306CTO
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO