[SOLVED] computer sees only 6 of 7 GPUs

[milota]

Hi all,

I am a hobby miner and not very experienced in Linux - I learn through mining.

I have added 2 GPUs to my mining computer, there is currently:

• Linuxmint 20.2 Uma installed
  AMDGPU 20.50 driver
  Gigabyte B250 Fintech motherboard with 12 PCIe slots (mining mode enabled)
  1300W PSU - the GPUs hardly consume total of 350W

GPUs:

• 1x RX570 4G (ASUS)
  6x RX560 4G (4x Sapphire, 2x ASUS)

My problem is, that the computer only recognizes 6GPUs max. I can't convince it to see all 7.
All the GPUs work fine and if there is less of them, I can mine on any of them.

I do not think it is a problem of the miner software, inxi -G only list 6 GPUs at a time.

Any ideas on what I might be doing wrong are appreciated.
Thank you

[Moonstone Man]

I do not think it is a problem of the miner software, inxi -G only list 6 GPUs at a time.

We don't need the output of inxi -G, we need the output of inxi -Fxz, enclosed in code tags [code]output.here[/code]. You'll see the code tags icon </> when you reply.

[milota]

inxi -Fxz returns

Code: Select all

System:
  Kernel: 5.4.0-80-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: MATE 1.24.0 Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal 
Machine:
  Type: Desktop System: Gigabyte product: B250-FinTech v: N/A 
  serial: <filter> 
  Mobo: Gigabyte model: B250-FinTech-CF v: x.x serial: <filter> 
  UEFI: American Megatrends v: F1 date: 01/04/2018 
CPU:
  Topology: Dual Core model: Intel Pentium G4560 bits: 64 type: MT MCP 
  arch: Kaby Lake rev: 9 L2 cache: 3072 KiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 27999 
  Speed: 800 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 800 2: 800 
  3: 800 4: 800 
Graphics:
  Device-1: Intel HD Graphics 610 vendor: Gigabyte driver: i915 v: kernel 
  bus ID: 00:02.0 
  Device-2: AMD Baffin [Radeon RX 460/560D / Pro 
  450/455/460/555/555X/560/560X] 
  vendor: ASUSTeK driver: amdgpu v: kernel bus ID: 01:00.0 
  Device-3: AMD Baffin [Radeon RX 460/560D / Pro 
  450/455/460/555/555X/560/560X] 
  vendor: Sapphire Limited driver: amdgpu v: kernel bus ID: 05:00.0 
  Device-4: AMD Baffin [Radeon RX 460/560D / Pro 
  450/455/460/555/555X/560/560X] 
  vendor: Sapphire Limited driver: amdgpu v: kernel bus ID: 07:00.0 
  Device-5: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] 
  vendor: ASUSTeK driver: amdgpu v: kernel bus ID: 0a:00.0 
  Device-6: AMD Baffin [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: amdgpu v: kernel bus ID: 0c:00.0 
  Device-7: AMD Baffin [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: amdgpu v: kernel bus ID: 0d:00.0 
  Display: x11 server: X.Org 1.20.9 driver: amdgpu,ati,modesetting 
  unloaded: fbdev,vesa resolution: 1280x1024~60Hz 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 610 (KBL GT1) 
  v: 4.6 Mesa 21.3.0-devel (git-74245ca 2021-07-21 focal-oibaf-ppa) 
  direct render: Yes 
Audio:
  Device-1: Intel 200 Series PCH HD Audio vendor: Gigabyte 
  driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
  Device-2: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] 
  vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 01:00.1 
  Device-3: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: snd_hda_intel v: kernel bus ID: 05:00.1 
  Device-4: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: snd_hda_intel v: kernel bus ID: 07:00.1 
  Device-5: AMD Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] 
  vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 0a:00.1 
  Device-6: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: snd_hda_intel v: kernel bus ID: 0c:00.1 
  Device-7: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] 
  vendor: Sapphire Limited driver: snd_hda_intel v: kernel bus ID: 0d:00.1 
  Sound Server: ALSA v: k5.4.0-80-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Gigabyte driver: r8169 v: kernel port: c000 bus ID: 06:00.0 
  IF: enp6s0 state: down mac: <filter> 
  Device-2: Realtek RTL8812AU 802.11a/b/g/n/ac 2T2R DB WLAN Adapter 
  type: USB driver: rtl88XXau bus ID: 1-6:2 
  IF: wlx64eeb7211c3a state: up mac: <filter> 
Drives:
  Local Storage: total: 111.79 GiB used: 35.17 GiB (31.5%) 
  ID-1: /dev/sda vendor: Kingston model: SA400S37120G size: 111.79 GiB 
Partition:
  ID-1: / size: 109.04 GiB used: 35.17 GiB (32.3%) fs: ext4 dev: /dev/sda2 
Sensors:
  System Temperatures: cpu: 33.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
  GPU: device: amdgpu temp: 73 C fan: 1268 device: amdgpu temp: 69 C 
  fan: 2063 device: amdgpu temp: 29 C fan: 1051 device: amdgpu temp: 73 C 
  fan: 1247 device: amdgpu temp: 73 C fan: 947 device: amdgpu temp: 71 C 
  fan: 2051 
Info:
  Processes: 284 Uptime: 11h 54m Memory: 3.73 GiB used: 1.38 GiB (37.1%) 
  Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 
  inxi: 3.0.38

[milota]

I have made some progress.
I also finally read the manuals to the motherboard and PSU.

I disabled the internal graphics and it convinced the system, that there are 7 GPUs plugged in.
However, the mining software still lists only 6 - working on it.

Edit: after re-enabling Above 4G Decoding (which I disabled together with the internal graphics), all 7 GPUs are mining.