[amdgpu] display and input freeze

[Sarah Easton]

Newly installed Ubuntu on a Lenovo laptop - less than 24 hours old. Just now, I revived laptop from sleep or hibernate and the display was frozen and corrupted. The bottom 1/3 of display was a patchwork of small squares of junk in green, pink, blue; top 2/3 of screen was a slightly distorted version of the default orange/purple background and the clock. I couldn't interact with the computer with mouse or keyboard - no mouse pointer, no control-alt-delete, no control-backspace. I found alt-PrtSc-reisub on google and was able to reboot from the keyboard. I'm running 18.04.4 LTS, on 2017ish Lenovo E450 with AMD Carrizo graphics card

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-108.109-generic 4.15.18
Uname: Linux 4.15.0-108-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Jun 28 18:33:57 2020
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: This is the first time
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Wani [Radeon R5/R6/R7 Graphics] [1002:9874] (rev cb) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Radeon R5 Graphics [17aa:5118]
MachineType: LENOVO 20H4CTO1WW
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-108-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/06/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: R0EET41W (1.15)
dmi.board.asset.tag: Not Available
dmi.board.name: 20H4CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrR0EET41W(1.15):bd06/06/2017:svnLENOVO:pn20H4CTO1WW:pvrThinkPadE475:rvnLENOVO:rn20H4CTO1WW:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad E475
dmi.product.name: 20H4CTO1WW
dmi.product.version: ThinkPad E475
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.3
version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.8-0ubuntu0~18.04.3
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.4
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

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Possible to use 20.04 instead? If 18.04 is required, please use HWE stack:
https://wiki.ubuntu.com/Kernel/LTSEnablementStack

And please keep BIOS up-to-date.