Kernel needs a special workaround argument to boot

[Ilgaz]

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
Description: Ubuntu 19.04
Release: 19.04

2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center

3) What you expected to happen

Boot

4) What happened instead

Freezes (see below for workaround), no visible sign of interaction possible. Caps lock "led" doesn't work indicating keyboard isn't working. Just a white cursor (non blinking) on screen, CPU doesn't seem to do anything since fan stops after a while.

This is more likely a Linux "bug". Unless you pass acpi_osi= argument to Linux kernel, it won't boot, appear and behave frozen with a (non blinking) cursor on top left. There is no further information given to user further complicating things.

Previously on 4.x kernels, system would boot using acpi=off argument creating more problems on this particular laptop model (HP Pavilion X360 13 inch).

As they are for proprietary broadcom bcm43142 chip, I am not adding further arguments in this bug report. Can tell on request if needed.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-31-generic 5.0.0-31.33
ProcVersionSignature: Ubuntu 5.0.0-31.33-generic 5.0.21
Uname: Linux 5.0.0-31-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ilgaz 1897 F.... pulseaudio
 /dev/snd/controlC1: ilgaz 1897 F.... pulseaudio
 /dev/snd/pcmC1D0p: ilgaz 1897 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 14 15:33:41 2019
HibernationDevice: RESUME=UUID=f34af719-8757-473b-848b-7db85d6fefae
InstallationDate: Installed on 2019-10-13 (1 days ago)
InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227)
MachineType: Hewlett-Packard HP Pavilion 13 x360 PC
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-31-generic root=UUID=f6787f82-d072-410e-8058-2b7f14d012b9 ro verbose pci=biosirq acpi_osi=
RelatedPackageVersions:
 linux-restricted-modules-5.0.0-31-generic N/A
 linux-backports-modules-5.0.0-31-generic N/A
 linux-firmware 1.178.3
SourcePackage: linux
UpgradeStatus: Upgraded to disco on 2019-10-13 (0 days ago)
dmi.bios.date: 06/21/2018
dmi.bios.vendor: Insyde
dmi.bios.version: F.41
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 2341
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 07.0A
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.41:bd06/21/2018:svnHewlett-Packard:pnHPPavilion13x360PC:pvr0977120000405F00000410180:rvnHewlett-Packard:rn2341:rvr07.0A:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion 13 x360 PC
dmi.product.sku: L0B89EA#AB8
dmi.product.version: 0977120000405F00000410180
dmi.sys.vendor: Hewlett-Packard

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Please remove all kernel parameters, let the system freeze, and attach `journalctl -b -1 -k` at next normal boot.