laptop doesnt wake up

[Graham Webber]

after the latest update my laptop does not wake up if the external monitor was plugged in when it went to sleep.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
Uname: Linux 4.15.0-44-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 Jan 29 10:53:33 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell HD Graphics 5500 [1028:062c]
InstallationDate: Installed on 2018-12-03 (56 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Latitude E5550
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-44-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/18/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0THWR2
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/18/2015:svnDellInc.:pnLatitudeE5550:pvr:rvnDellInc.:rn0THWR2:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5550
dmi.sys.vendor: Dell Inc.
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)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It sounds like some part of the system has crashed. To help us find the cause of the crash please follow these steps:

1. Look in /var/crash for crash files and if found run:
    ubuntu-bug YOURFILE.crash
Then tell us the ID of the newly-created bug.

2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us.

3. If step 2 also failed then apply the workaround from bug 994921, reboot, reproduce the crash, and retry step 1.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.

[Peter Hall (peter-preacher)]

Same problem for me.
Full freeze after entering sleep mode or if I just lock my gnome-session while an external monitor is attached.
If laptop is standalone it does not freeze.

There is nothing in /var/crash
There is no match on https://errors.ubuntu.com/user/<whoopsie-id>

[Sebastien Bacher (seb128)]

Could you add your journalctl log from the session having the issue to the bug report?

[Peter Hall (peter-preacher)]

Problem disappears for me after revertering FROM linux-image-4.15.0-44-generic TO linux-image-4.15.0-43-generic

Seems to be other issues with linux-image-4.15.0-44-generic, I get lockups simply by disconnecting the USB-C cable to my monitor ("undocking", if you will).

[Daniel van Vugt (vanvugt)]

Graham,

Please follow the steps in comment #2. Please also tell us if using an older kernel fixes the problem for you like Peter says. Older kernels can be found here:

  https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D

If no older kernel fixes the problem then that means Peter needs to open a separate bug.

[MaskedDriver (maskeddriver)]

I'm having the same issue on a Dell Latitude 5289 laptop connected to a dell USB-C dock with 2 external monitors, and USB keyboard and mouse (Razer Naga Chroma).

My computer will immediately lock up upon pressing Super + L to lock the screen when it's connected to the dock. When disconnected from the dock, it wakes up fine.

This is isolated to 4.15.0-44 for me as well. I am unable to replicate in 4.15.0-43.

Related issues:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813956
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1813738
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1813902