( cc'ing this here, OP -> dri-devel@ )
i've a dual gpu system
inxi -GS
System: Host: ws05 Kernel: 5.14.13-200.fc34.x86_64 x86_64
bits: 64 Console: tty pts/0
Distro: Fedora release 34 (Thirty Four)
(1) Graphics: Device-1: NVIDIA GK208B [GeForce GT 710] driver:
nvidia v: 470.74
(2) Device-2: Advanced Micro Devices [AMD/ATI] Cezanne
driver: N/A
Display: server: X.org 1.20.11 driver: loaded:
nvidia unloaded: fbdev,modesetting,vesa
Message: Advanced graphics data unavailable for root.
running on
cpu: Ryzen 5 5600G
mobo: ASRockRack X470D4U
bios: vP4.20, 04/14/2021
kernel: 5.14.13-200.fc34.x86_64 x86_64
where,
the nvidia is a PCIe card
the amdgpu is the Ryzen-integrated gpu
the nvidia PCI is currently my primary
it's screen-attached, and boots/functions correctly
lsmod | grep nvidia
nvidia_drm 69632 0
nvidia_modeset 1200128 1 nvidia_drm
nvidia 35332096 1 nvidia_modeset
drm_kms_helper 303104 2 amdgpu,nvidia_drm
drm 630784 8
gpu_sched,drm_kms_helper,nvidia,amdgpu,drm_ttm_helper,nvidia_drm,ttm
dmesg | grep -i nvidia
[ 5.755494] nvidia: loading out-of-tree module taints kernel.
[ 5.755503] nvidia: module license 'NVIDIA' taints kernel.
[ 5.759769] nvidia: module verification failed: signature
and/or required key missing - tainting kernel
[ 5.774894] nvidia-nvlink: Nvlink Core is being initialized,
major device number 234
[ 5.775299] nvidia 0000:10:00.0: vgaarb: changed VGA
decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[ 5.975449] NVRM: loading NVIDIA UNIX x86_64 Kernel Module
470.74 Mon Sep 13 23:09:15 UTC 2021
[ 6.013181] nvidia-modeset: Loading NVIDIA Kernel Mode
Setting Driver for UNIX platforms 470.74 Mon Sep 13 22:59:50 UTC 2021
[ 6.016444] [drm] [nvidia-drm] [GPU ID 0x00001000] Loading
driver
[ 6.227295] caller _nv000723rm+0x1ad/0x200 [nvidia] mapping
multiple BARs
[ 6.954906] [drm] Initialized nvidia-drm 0.0.0 20160202 for
0000:10:00.0 on minor 0
[ 16.820758] input: HDA NVidia HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:01.1/0000:10:00.1/sound/card0/input13
[ 16.820776] input: HDA NVidia HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:01.1/0000:10:00.1/sound/card0/input14
[ 16.820808] input: HDA NVidia HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:01.1/0000:10:00.1/sound/card0/input15
[ 16.820826] input: HDA NVidia HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:01.1/0000:10:00.1/sound/card0/input16
[ 16.820841] input: HDA NVidia HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:01.1/0000:10:00.1/sound/card0/input17
the amdgpu is not (currently/yet) in use; no attached screen
in BIOS, currently,
'PCI Express' (nvidia gpu) is selected as primary
'HybridGraphics' is enabled
'OnBoard VGA' is enabled
on boot, mods are loaded
lsmod | grep gpu
amdgpu 7802880 0
drm_ttm_helper 16384 1 amdgpu
ttm 81920 2 amdgpu,drm_ttm_helper
iommu_v2 24576 1 amdgpu
gpu_sched 45056 1 amdgpu
drm_kms_helper 303104 2 amdgpu,nvidia_drm
drm 630784 8
gpu_sched,drm_kms_helper,nvidia,amdgpu,drm_ttm_helper,nvidia_drm,ttm
i2c_algo_bit 16384 2 igb,amdgpu
but i see a 'fatal error' and 'failed' probe,
dmesg | grep -i amdgpu
[ 5.161923] [drm] amdgpu kernel modesetting enabled.
[ 5.162097] amdgpu: Virtual CRAT table created for CPU
[ 5.162104] amdgpu: Topology: Add CPU node
[ 5.162197] amdgpu 0000:30:00.0: enabling device (0000 ->
0003)
[ 5.162232] amdgpu 0000:30:00.0: amdgpu: Trusted Memory Zone
(TMZ) feature enabled
[ 5.169105] amdgpu 0000:30:00.0: BAR 6: can't assign [???
0x00000000 flags 0x20000000] (bogus alignment)
[ 5.174413] amdgpu 0000:30:00.0: amdgpu: Unable to locate a
BIOS ROM
[ 5.174415] amdgpu 0000:30:00.0: amdgpu: Fatal error during
GPU init
[ 5.174416] amdgpu 0000:30:00.0: amdgpu: amdgpu: finishing
device.
[ 5.174425] Modules linked in: amdgpu(+) uas usb_storage
fjes(-) raid1 drm_ttm_helper ttm iommu_v2 gpu_sched drm_kms_helper
crct10dif_pclmul crc32_pclmul igb crc32c_intel cec ghash_clmulni_intel drm
sp5100_tco dca ccp i2c_algo_bit wmi video sunrpc tcp_bbr nct6775 hwmon_vid
k10temp
[ 5.174463] amdgpu_device_fini_hw+0x33/0x2c5 [amdgpu]
[ 5.174594] amdgpu_driver_load_kms.cold+0x72/0x94 [amdgpu]
[ 5.174706] amdgpu_pci_probe+0x110/0x1a0 [amdgpu]
[ 5.174907] amdgpu: probe of 0000:30:00.0 failed with error
-22
are specific configs from
https://www.kernel.org/doc/html/latest/gpu/amdgpu.html
required to avoid/workaround the init error? or known bug?
