[amdgpu] Boot into black screen without power supply (Kubuntu on AMD)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
kwin (Ubuntu) |
Expired
|
Undecided
|
Unassigned | ||
xserver-xorg-video-amdgpu (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Always when I turn on my Lenovo Thinkpad T495 (AMD CPU)- without the power supply connected - the laptop boots correctly at the beginning, but then just before going to the login screen it gets black. It can only be restarted. When I attach the power supply before the laptop boot everything works correctly. I see this behavior only on Kubuntu (with KDE desktop). On Ubuntu 20.04 everything works fine.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSign
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckR
CompositorRunning: None
CurrentDesktop: KDE
Date: Mon Apr 13 14:20:17 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingI
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev d2) (prog-if 00 [VGA controller])
Subsystem: Lenovo Picasso [17aa:5125]
InstallationDate: Installed on 2020-04-02 (10 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200401)
MachineType: LENOVO 20NKS01Y00
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/28/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: R12ET46W(1.16 )
dmi.board.
dmi.board.name: 20NKS01Y00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad T495
dmi.product.name: 20NKS01Y00
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-1
version.
version.
version.
version.
version.
version.
version.
tags: | added: amdgpu black-screen |
affects: | xorg (Ubuntu) → xserver-xorg-video-amdgpu (Ubuntu) |
summary: |
- Boot into black screen without power supply (Kubuntu on AMD / Thinkpad - T495) + [amdgpu] Boot into black screen without power supply (Kubuntu on AMD / + Thinkpad T495) |
summary: |
- [amdgpu] Boot into black screen without power supply (Kubuntu on AMD / - Thinkpad T495) + [amdgpu] Boot into black screen without power supply (Kubuntu on AMD) |
I tested again. THis time I got the login screen and logged in then the screen got distorted as the display manager would not work correctly. I did "journalctl -b 0" and found also a crash file in var/crash/...
I attach both files here.