On shutdown, peripherals turn off, but fans keep spinning, power LED is lit and screen is frozen at the plymouth screen

[Douglas Silva]

On shutdown, peripherals turn off (keyboard, mouse), but fans keep spinning, motherboard LEDs are lit and screen is frozen at the Ubuntu plymouth screen (no animations, frozen frame). The keyboard is turned off at this point, so the only way to properly shut down the computer is to press the power switch on the case for a few seconds.

Without plymouth, the screen turns off as it should, but the other symptoms persist, such as fans never stop, power LED never turns off.

Reboot works flawlessly. So does suspending and hibernating.

This is currently reproducible on Arch Linux (Linux 5.1.4.arch1-1). See bug report: https://bugs.archlinux.org/task/62539.

This is NOT reproducible on Ubuntu 18.10 or older. It started somewhere after Linux 5.0.X.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-15-generic 5.0.0-15.16
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Uname: Linux 5.0.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: dsilva 1883 F.... pulseaudio
 /dev/snd/controlC1: dsilva 1883 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon May 27 18:27:29 2019
InstallationDate: Installed on 2019-05-26 (1 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
IwConfig:
 enp2s0 no wireless extensions.

 lo no wireless extensions.
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 0951:16bc Kingston Technology
 Bus 001 Device 002: ID 0951:16d2 Kingston Technology
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. B360M GAMING HD
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-15-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-5.0.0-15-generic N/A
 linux-backports-modules-5.0.0-15-generic N/A
 linux-firmware 1.178.1
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/14/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F12
dmi.board.asset.tag: Default string
dmi.board.name: B360M GAMING HD
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF12:bd03/14/2019:svnGigabyteTechnologyCo.,Ltd.:pnB360MGAMINGHD:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB360MGAMINGHD:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: B360M GAMING HD
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Douglas Silva (o-alquimista)]

I can no longer reproduce this with kernel 5.1.5.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 19.04 (disco) reached end-of-life on January 23, 2020.

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 any more. 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.