Amdgpu kernel module loading/using instructions

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1

At the moment I’m booting fedora sway edition with nomodeset.
Looks like I have amdgpu kernel module (a lot of stuff at /lib/firmware/amdgpu), but it is not-loaded (“lsmod | grep amd”).
According to some existing posts here, this is expected (for nomodeset-case)

I’ve also tried to add amdgpu into dracut conf, but without success:

$ cat /etc/dracut.conf.d/amdgpu.conf
  add_drivers+=" amdgpu "
  fw_dir+=" /lib/firmware/amdgpu "
  install_items+=" /lib/firmware/amdgpu/* "

Are there any wiki/instruction regarding right installation of amdgpu stuff for fedora?

P.S. tried using GRUB_CMDLINE_LINUX=“rhgb quiet amd_iommu=on iommu=pt psi=1 amdgpu.ppfeaturemask=0xffffffff”, but ended up in a black-screen during boot

2

Why do you need the nomodeset and all the other kernel options?
I have a ampgpu, RX 7800 XT, and do not need to do anything special for it to just-work™.

What hardware do you have?
Please post the output of inxi -FGxx.

1 Like
3

Without nomodeset I’m just getting blank screen on boot every time.
I suspect, that I need to set some non-default amd-specific kernell parameters at grub, but don’t know, which ones exactly…

System:
  Host: fedora Kernel: 6.7.11-200.fc39.x86_64 arch: x86_64 bits: 64
    compiler: gcc v: 2.40-14.fc39
  Desktop: Sway v: 1.8.1 dm: SDDM Distro: Fedora Linux 39 (Sway)
Machine:
  Type: Desktop Mobo: ASRock model: B550M Pro4 serial: <superuser required>
    UEFI: American Megatrends LLC. v: P2.60 date: 02/07/2023
Battery:
  Device-1: hidpp_battery_0 model: Logitech Wireless Mouse M510
    serial: 86-a7-26-91 charge: 55% (should be ignored) status: discharging
CPU:
  Info: 8-core model: AMD Ryzen 7 5700G with Radeon Graphics bits: 64
    type: MT MCP arch: Zen 3 rev: 0 cache: L1: 512 KiB L2: 4 MiB L3: 16 MiB
  Speed (MHz): avg: 562 high: 2994 min/max: 400/4673 cores: 1: 2994 2: 400
    3: 400 4: 400 5: 400 6: 400 7: 400 8: 400 9: 400 10: 400 11: 400 12: 400
    13: 400 14: 400 15: 400 16: 400 bogomips: 121369
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Cezanne [Radeon Vega Series / Radeon Mobile Series]
    driver: N/A arch: GCN-5 pcie: speed: 8 GT/s lanes: 16 bus-ID: 06:00.0
    chip-ID: 1002:1638
  Device-2: Logitech Webcam C270 driver: snd-usb-audio,uvcvideo type: USB
    rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 3-2.1:3 chip-ID: 046d:0825
  Display: wayland server: X.org v: 1.20.14 with: Xwayland v: 23.2.4
    compositor: Sway v: 1.8.1 driver: N/A display-ID: 1
  Monitor-1: Unknown-1 res: 1024x768 size: N/A
  API: OpenGL v: 4.5 vendor: mesa v: 23.3.6 glx-v: 1.4 es-v: 3.2
    direct-render: yes renderer: llvmpipe (LLVM 17.0.6 256 bits)
    device-ID: ffffffff:ffffffff
  API: EGL Message: EGL data requires eglinfo. Check --recommends.
Audio:
  Device-1: AMD Renoir Radeon High Definition Audio driver: snd_hda_intel
    v: kernel pcie: speed: 8 GT/s lanes: 16 bus-ID: 06:00.1 chip-ID: 1002:1637
  Device-2: AMD Family 17h/19h HD Audio vendor: ASRock driver: snd_hda_intel
    v: kernel pcie: speed: 8 GT/s lanes: 16 bus-ID: 06:00.6 chip-ID: 1022:15e3
  Device-3: Logitech Webcam C270 driver: snd-usb-audio,uvcvideo type: USB
    rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 3-2.1:3 chip-ID: 046d:0825
  API: ALSA v: k6.7.11-200.fc39.x86_64 status: kernel-api
  Server-1: JACK v: 1.9.22 status: off
  Server-2: PipeWire v: 1.0.4 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: ASRock driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1
    port: f000 bus-ID: 04:00.0 chip-ID: 10ec:8168
  IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: 9c:6b:00:19:b7:f6
Drives:
  Local Storage: total: 2.27 TiB used: 4.69 GiB (0.2%)
  ID-1: /dev/nvme0n1 vendor: Seagate model: BarraCuda Q5 ZP500CV30001
    size: 465.76 GiB speed: 31.6 Gb/s lanes: 4 serial: 7YA01HZL temp: 34.9 C
  ID-2: /dev/nvme1n1 vendor: Kingston model: SFYRD2000G size: 1.82 TiB
    speed: 63.2 Gb/s lanes: 4 serial: 50026B76866DC275 temp: 37.9 C
Partition:
  ID-1: / size: 464.17 GiB used: 4.4 GiB (0.9%) fs: btrfs dev: /dev/nvme0n1p3
  ID-2: /boot size: 973.4 MiB used: 277.3 MiB (28.5%) fs: ext4
    dev: /dev/nvme0n1p2
  ID-3: /boot/efi size: 598.8 MiB used: 19 MiB (3.2%) fs: vfat
    dev: /dev/nvme0n1p1
  ID-4: /home size: 464.17 GiB used: 4.4 GiB (0.9%) fs: btrfs
    dev: /dev/nvme0n1p3
Swap:
  ID-1: swap-1 type: zram size: 8 GiB used: 0 KiB (0.0%) priority: 100
    dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 48.9 C mobo: N/A
  Fan Speeds (rpm): N/A
Info:
  Memory: total: 64 GiB note: est. available: 62.17 GiB used: 2.1 GiB (3.4%)
  Processes: 329 Power: uptime: 9m wakeups: 0 Init: systemd v: 254
    target: graphical (5) default: graphical
  Packages: Compilers: gcc: 13.2.1 Shell: Zsh v: 5.9 running-in: foot
    inxi: 3.3.33
4

I’m not sure what you should set. Maybe someone else can help?

1 Like
5

I need to set some other kernel parameters in order to avoid “blank screen” during boot.
At the moment I know only one such parameter - “nomodeset”, but it prevents amdgpu module loading.

6

Apart from the black screen are there errors in the kernel dmesg output?

7

This time I tried a few other amdgpu options, got a blank screen issue again (on all my vt-s), then restarted with “nomodeset” and grabbed previous journal. Here it is:

8

That links does not work I get a 404 error.

9

Hello @iigon ,
The Linux Kernel command line arguments can be found at The kernel’s command-line parameters — The Linux Kernel documentation. I don’t know if that is where you can find the info you’re looking for but it is a start.

2 Likes
10

Which parameters did you try?
https://www.kernel.org/doc/html/v4.20/gpu/amdgpu.html

1 Like
11

From some URL I found and tried the following:

  • amdgpu.dc=0 amdgpu.cik_support=1

But, I’d like to know are there any guide/manual/instruction for how to determine, which options do I really need (for my Ryzen 7 5700G with Cezanne arch: GCN-5 pcie: speed: 8 GT/s lanes: 16 bus-ID: 06:00.0 chip-ID: 1002:1638)

Note: my journal is attached above

12

Hello @iigon ,
I use a 5600G and haven’t found the need to do anything, it is working fine for me.

1 Like
13

I have this issue with 5700G at all the wayland-distros (garudasway, garudahyprland, fedorasway) without nomodeset. It’s really annoying …

14

Link does not work.

1 Like
15

I’ve been using wayland over xserver for awhile (years). No problems with the 5600G since I built this systm, it has the same Cezanne architecture, so I wonder what’s different for you.

16

You may want to file an upstream bug if it’s impacting several different distros/configurations.

Thanks

1 Like
17

Pretty strange… I’ve just added the same stuff as a gist. Could you access it now?

18

Do you mean - file a bug for linux kernel amdgpu drm driver?

19

First of all, I’m going to check if there are some BIOS updates available for my MB, then - google for problems with my specific 5700G case, then (as Joe Suggested) - file a bug to linux kernel amdgpu drm driver tracker.
Then (if needed) - try to find low-profile external gpu for my slim case (and even change a case, power supply and buy a regular graphichs card if all the mentioned above does not help).
Of cause, it would be really good if I could find any specific amdgpu parameters for my HW. I strongly feel that the problem is actually not in HW itself, since I’m working fine on x-server with some default drivers (mesa or whatever is there) and can see good 2d screen with 4K (instead of FHD) resolution

20

yes

You may want to remove these amdgpu.dc=0 amdgpu.ci_support=1 amdgpu.cik_support=1 and check with the 6.8.4 kernel, I think it just went to stable.

You may also want to check the cables as well.

Thanks

1 Like