Desktop is blank after logging in (remotely) without a monitor attached
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
GNOME Shell |
New
|
Unknown
|
|||
gnome-shell (Ubuntu) |
Triaged
|
Low
|
Unassigned | ||
mutter (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
On Ubuntu 20.04, I have an AMD system with an integrated GPU (Ryzen 3 3200G with Radeon Vega 8)
I am using lightdm instead of gdm3. My GPU is using the amdgpu driver. I have no specific xorg.conf in place. I am using x11vnc to login and view the desktop remotely. There is no monitor attached.
After logging into lightdm's greeter, I am presented with a blank desktop with the Focal Fossa background image and a mouse cursor, but no other visible interface or windows. There is no menu bar at the top of the desktop and no application bar on the left.
This all works perfectly fine if a monitor is attached before lightdm (and thus Xorg) is started.
If I change the settings at login to use fvwm for my session it works fine. This is also the case for Gnome Flashback mode (using metacity). But the default of gnome-shell/mutter does not work without the monitor. Nor does using Wayland.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSign
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckR
Date: Sun May 31 13:34:20 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
evdi, 1.6.0+dfsg, 5.4.0-31-generic, x86_64: installed
evdi, 1.6.0+dfsg, 5.4.0-33-generic, x86_64: installed
ExtraDebuggingI
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev c9) (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8]
InstallationDate: Installed on 2020-05-21 (10 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Gigabyte Technology Co., Ltd. B450 I AORUS PRO WIFI
ProcEnviron:
TERM=screen-
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/27/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F50
dmi.board.
dmi.board.name: B450 I AORUS PRO WIFI-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.family: Default string
dmi.product.name: B450 I AORUS PRO WIFI
dmi.product.sku: Default string
dmi.product.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.
version.
version.
version.
version.
version.
version.
description: | updated |
affects: | ubuntu → xorg (Ubuntu) |
Changed in gnome-shell (Ubuntu): | |
status: | Incomplete → New |
Changed in mutter (Ubuntu): | |
status: | Incomplete → Triaged |
Changed in gnome-shell (Ubuntu): | |
status: | New → Triaged |
summary: |
- Desktop is blank after logging in without a monitor attached + Desktop is blank after logging in (remotely) without a monitor attached |
Changed in gnome-shell: | |
status: | Unknown → New |
based on my research so far (and summarized in the description), I don't think this is an xorg issue. I think it's a gnome issue.