FBDEV in use with amdgpu and there is no /dev/dri/card0 (hardware is AMD/ATI Renoir [1002:1636])

Bug #1906601 reported by Blaise Mariner
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
linux-meta-hwe-5.8 (Ubuntu)
Fix Released
xorg-server (Ubuntu)

Bug Description

New bug from: https://bugs.launchpad.net/ubuntu/+bug/1906525.

lshw -c video gives same result of unclaimed video. Night light and HDMI still do not work.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-56.62-generic 5.4.73
Uname: Linux 5.4.0-56-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Dec 2 22:09:04 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus: rtl8821ce,, 5.4.0-56-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
 Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c2) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Renoir [1043:1352]
InstallationDate: Installed on 2020-12-01 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop X513IA_M513IA
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-56-generic root=UUID=9f7c4a34-4508-4d48-9c26-c7bf0045826a ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/05/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X513IA.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X513IA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX513IA.300:bd06/05/2020:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX513IA_M513IA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX513IA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: VivoBook
dmi.product.name: VivoBook_ASUSLaptop X513IA_M513IA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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 20.0.8-0ubuntu1~20.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.6
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

Revision history for this message
Blaise Mariner (bmariner) wrote :
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

It appears "UNCLAIMED" in lshw is somewhat common. So I wouldn't take that to be evidence of a problem although it is suspicious.

What is evidence of a real problem is the Xorg log shows software rendering is in use:

  [ 3.872] (II) FBDEV(0): hardware: EFI VGA (video memory: 8100kB)

and the correct hardware device node is missing:

  [ 3.872] (EE) open /dev/dri/card0: No such file or directory

This makes me think the kernel version is slightly too old for your GPU.

Please try booting Ubuntu 20.10 or 20.04.1: https://ubuntu.com/download/desktop

affects: xorg (Ubuntu) → xorg-server (Ubuntu)
summary: - Display + HDMI not working properly. I suspect the automatically
- installed driver.
+ FBDEV in use with amdgpu and there is no /dev/dri/card0
summary: - FBDEV in use with amdgpu and there is no /dev/dri/card0
+ FBDEV in use with amdgpu and there is no /dev/dri/card0 (hardware is
+ AMD/ATI Renoir [1002:1636])
tags: added: amdgpu
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Timo Aaltonen (tjaalton) wrote :

you need at least v5.5 or up for Renoir

install linux-generic-hwe-20.04-edge which will install the HWE kernel from 20.10 which is based on 5.8

Changed in xorg-server (Ubuntu):
status: New → Invalid
Changed in linux (Ubuntu):
status: Confirmed → Fix Released
Changed in linux-meta-hwe-5.8 (Ubuntu):
status: New → Fix Released
Revision history for this message
Blaise Mariner (bmariner) wrote :

Thanks Daniel and Timo, your help is greatly appreciated.

I updated to 20.10 and things appear to be a lot different in my display. The HDMI works, the night light works, and now xrandr shows an extensive output for my display. I wish I knew it was this simple awhile ago haha! Let me know if you would like me to attach any of the output commands in my new system.

I did not need to update to the hwe kernal. I am just using the generic kernal (I will paste the version of the kernal that I am running below). I was going to do the hwe kernal update like you recommended, however, I don't want to fix what is not broken. Unless you recommend that I update to the linux-generic-hwe-20.04-edge like recommended above. Let me know if that is the case (if this is the case, please confirm that you would recommend installing linux-generic-hwe-20.04-edge opposed to installing linux-generic-hwe-20.10-edge, if that is a thing).

Again, thank you both so much.

blaise@blaise-V:~$ cat /proc/version
Linux version 5.8.0-31-generic (buildd@lgw01-amd64-038) (gcc (Ubuntu 10.2.0-13ubuntu1) 10.2.0, GNU ld (GNU Binutils for Ubuntu) 2.35.1) #33-Ubuntu SMP Mon Nov 23 18:44:54 UTC 2020

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

It's a little bit cryptic but at the top of this page:

linux (Ubuntu) Fix Released refers to the fix being in Ubuntu 20.10.

linux-meta-hwe-5.8 (Ubuntu) Fix Released refers to the fix being optional in Ubuntu 20.04. Only if you were using 20.04 would you need to install linux-generic-hwe-20.04-edge.

Revision history for this message
Daniel van Vugt (vanvugt) wrote :


The release notes incorrectly(?) suggest Renoir support is in kernel 5.4:

Revision history for this message
Timo Aaltonen (tjaalton) wrote :

Right, it still needs amdgpu.exp_hw_support=1 on 5.4.

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