[amdgpu] Unable to Login

[dundir]

Currently I'm using a 4K AOC monitor on 20.04 LTS with a DisplayPort cable.

Normally, there is a gear widget in the lower right corner of the screen that allows me to select between XServer and Wayland. This gear is missing. Switching to an HDMI cable corrects the issue but doesn't allow the display to work at higher than 30hz.

Additionally, attempting to login throws a session error which hangs. You need to switch to a separate tty to do anything.

The specific error is a popup right after entering your password.

This is the text:

Error found when loading /home/user/.xprofile:
warning: output HDMI-A-1 not found: ignoring
X Error of failed request: BadRROutput (invalid Output parameter)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 15 (RRGetOutputProperty)
Serial number of failed request: 37
Current serial number in output stream: 37

As a result the session will not be configured correctly.
You should fix the problem as soon as feasible. <OK button>

Mouse and Keyboard are fully unresponsive except for the magic keys (switching TTY and various other kernel functions).

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 19 17:55:47 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X] [1002:67ef] (rev e5) (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Polaris 21 XL [Radeon RX 560D] [1682:956d]
 Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15dd] (rev c6) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [1043:876b]
InstallationDate: Installed on 2020-04-26 (84 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: System manufacturer System Product Name
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic root=/dev/mapper/hostname--vg-base ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/14/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2202
dmi.board.asset.tag: Default string
dmi.board.name: PRIME B450-PLUS
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2202:bd07/14/2020:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEB450-PLUS:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[dundir (dundir)]

After a bit more troubleshooting, working with xrandr and the xorg.conf doesn't seem to have any effect when on the tty, and xrandr throws a cannot connect to display error.

[Daniel van Vugt (vanvugt)]

You seem to be describing multiple problems. Please choose a single problem for this bug to be about.

[dundir (dundir)]

Hi Daniel,

Unfortunately, it would have taken too long to upload identical sets of apport files and both of these bugs are related to using a physical DisplayPort 1.2 cable. Both issues disappear when switching cables.

I erred on the side of reporting the issue so it could be addressed but I don't really have the time or energy to troubleshoot this further. I'm having to switch to Manjaro because it just works, and there are too many issues with 20.04 for my daily driver needs so this will likely be my last bug report for awhile.

Best Regards,
Nathan