AutomaticLogin: Not responding to input after switch user to auto-login account

[Fikrul Arif]

Step:

1. There are two users, A and B. A is adminstrator, B is standard user, B is automatic login.
2. Boot into Ubuntu 18.04.1 LTS, it will automatically login to user B.
3. Switch User to user A without logging out.
4. Switch User back to user B, either by logging out from user A or not.

Expected: it will be back to user B normally.

Actual: it backs to user B but become not responding to keyboard, touchpad, or mouse input. Closing the lid is responded normally, which is locking the screen, the three-arrows in the lock screen is animated normally, clock is updated.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Dec 25 14:19:34 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company 3rd Gen Core processor Graphics Controller [103c:183a]
 Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] [1002:6840] (rev ff) (prog-if ff)
InstallationDate: Installed on 2018-12-23 (2 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Hewlett-Packard HP Pavilion g4 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=3182b497-aa0e-491d-aad5-e1c8e049dda1 ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/18/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.01
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 183A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 56.0E
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.01:bd01/18/2012:svnHewlett-Packard:pnHPPaviliong4NotebookPC:pvr0791100000205610000620100:rvnHewlett-Packard:rn183A:rvr56.0E:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion g4 Notebook PC
dmi.product.version: 0791100000205610000620100
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Daniel van Vugt (vanvugt)]

If you're using a Xorg session (the default one named "Ubuntu") then the mouse pointer is moved by xorg-server independently of gnome-shell. This means that if the mouse pointer is frozen then it's either Xorg or the kernel that's freezing.

If you're using Wayland and not using a Xorg session then please try using the latter.

Can you please reproduce the problem again, recover using the lid trick and then without rebooting run:

   dmesg > dmesg.txt
   journalctl > cur_boot.txt

If you need to reboot to recover then instead please run this immediately after rebooting:

   journalctl -b-1 > prev_boot.txt

and send us the resulting text file(s).

[Daniel van Vugt (vanvugt)]

These look most relevant:

Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): flip queue failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): Page flip failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (EE) modeset(0): present flip failed
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): flip queue failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): Page flip failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (EE) modeset(0): present flip failed
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): flip queue failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (WW) modeset(0): Page flip failed: Permission denied
Jan 19 19:38:47 shehadeh /usr/lib/gdm3/gdm-x-session[1140]: (EE) modeset(0): present flip failed

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 18.04 (bionic) reached end-of-standard-support on May 31, 2023.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it anymore. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.