AMD GPU issue with miner v3.0.1

[Fatfingerjoe]

Hi,

i got some trouble on the new quantus-miner v3.0.1 with an AMD Radeon 7900XTX GPU environment on Ubuntu Linux.

Environment

quantus-miner: v3.0.1
quantus-node: v0.6.3
quantus-cli: v1.3.3
GPU generation: AMD Radeon RX 7900 XTX (RADV NAVI31) (Backend: Vulkan)
Driver: amd mesa
v: 25.2.8-0ubuntu0.25.10.1 glx-v: 1.4 direct-render: yes renderer: AMD
Radeon RX 7900 XTX (radeonsi navi31 LLVM 20.1.8 DRM 3.64
6.17.0-22-generic)
Backend: Vulkan
OS: Ubuntu 25.10
Node state: fully synced
Miner mode: external miner via QUIC to 127.0.0.1:9833

What the miner tells me:

[2026-04-20T19:33:43Z INFO engine_gpu] Initializing GPU adapter 0: AMD Radeon RX 7900 XTX (RADV NAVI31) (Backend: Vulkan)
[2026-04-20T19:33:43Z INFO gpu_engine] Adapter 0 detailed info:
[2026-04-20T19:33:43Z INFO gpu_engine] Name: AMD Radeon RX 7900 XTX (RADV NAVI31)
[2026-04-20T19:33:43Z INFO gpu_engine] Vendor: 4098
[2026-04-20T19:33:43Z INFO gpu_engine] Device: 29772
[2026-04-20T19:33:43Z INFO gpu_engine] Device Type: DiscreteGpu
[2026-04-20T19:33:43Z INFO gpu_engine] Driver: radv
[2026-04-20T19:33:43Z INFO gpu_engine] Driver Info: Mesa 25.2.8-0ubuntu0.25.10.1
[2026-04-20T19:33:43Z INFO gpu_engine] Backend: Vulkan
[2026-04-20T19:33:43Z INFO gpu_engine] Device limits for adapter 0:
[2026-04-20T19:33:43Z INFO gpu_engine] Max workgroups per dimension: 65535
[2026-04-20T19:33:43Z INFO gpu_engine] Max workgroup size X: 256
[2026-04-20T19:33:43Z INFO gpu_engine] Max workgroup size Y: 256
[2026-04-20T19:33:43Z INFO gpu_engine] Max workgroup size Z: 64
[2026-04-20T19:33:43Z INFO gpu_engine] Max compute invocations per workgroup: 256
[2026-04-20T19:33:43Z INFO gpu_engine] Max buffer size: 268435456
[2026-04-20T19:33:44Z INFO gpu_engine] Vendor-specific dispatch configuration:
[2026-04-20T19:33:44Z INFO gpu_engine] Max hardware workgroups: 65535
[2026-04-20T19:33:44Z INFO gpu_engine] Optimal workgroups: 6553
[2026-04-20T19:33:44Z INFO engine_gpu] Initializing GPU adapter 1: llvmpipe (LLVM 20.1.8, 256 bits) (Backend: Vulkan)
[2026-04-20T19:33:44Z INFO gpu_engine] Adapter 1 detailed info:
[2026-04-20T19:33:44Z INFO gpu_engine] Name: llvmpipe (LLVM 20.1.8, 256 bits)
[2026-04-20T19:33:44Z INFO gpu_engine] Vendor: 65541
[2026-04-20T19:33:44Z INFO gpu_engine] Device: 0
[2026-04-20T19:33:44Z INFO gpu_engine] Device Type: Cpu
[2026-04-20T19:33:44Z INFO gpu_engine] Driver: llvmpipe
[2026-04-20T19:33:44Z INFO gpu_engine] Driver Info: Mesa 25.2.8-0ubuntu0.25.10.1 (LLVM 20.1.8)
[2026-04-20T19:33:44Z INFO gpu_engine] Backend: Vulkan
[2026-04-20T19:33:44Z INFO gpu_engine] Device limits for adapter 1:
[2026-04-20T19:33:44Z INFO gpu_engine] Max workgroups per dimension: 65535
[2026-04-20T19:33:44Z INFO gpu_engine] Max workgroup size X: 256
[2026-04-20T19:33:44Z INFO gpu_engine] Max workgroup size Y: 256
[2026-04-20T19:33:44Z INFO gpu_engine] Max workgroup size Z: 64
[2026-04-20T19:33:44Z INFO gpu_engine] Max compute invocations per workgroup: 256
[2026-04-20T19:33:44Z INFO gpu_engine] Max buffer size: 268435456
[2026-04-20T19:33:45Z INFO gpu_engine] Vendor-specific dispatch configuration:
[2026-04-20T19:33:45Z INFO gpu_engine] Max hardware workgroups: 65535
[2026-04-20T19:33:45Z INFO gpu_engine] Optimal workgroups: 4095
....
[2026-04-20T19:35:02Z INFO gpu_engine] GPU 0 search started: range 7866e152..1340e154, nonces: 4294967295, cancel check interval: 10000
radv/amdgpu: The CS has been cancelled because the context is lost. This context is guilty of a hard recovery.

thread '' (6770) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-27.0.1/src/backend/wgpu_core.rs:1826:30:
Error in Device::poll: Validation Error

Caused by:
Parent device is lost

0: 0x62e057688aa2 - unknown
1: 0x62e05736f8ba - unknown
2: 0x62e057687e85 - unknown
3: 0x62e057687b00 - unknown
4: 0x62e0576b0407 - unknown
5: 0x62e0576b03b9 - unknown
6: 0x62e0576b03ac - unknown
7: 0x62e05737080b - unknown
8: 0x62e057704910 - unknown
9: 0x62e0573aa000 - unknown
10: 0x62e0573fee5d - unknown
11: 0x62e0573fdea5 - unknown
12: 0x62e0573fddfb - unknown
13: 0x62e0576b7be8 - unknown
14: 0x7a89510a3d64 - start_thread
at ./nptl/pthread_create.c:448:8
15: 0x7a89511373fc - __GI___clone3
at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78:0
16: 0x0 -

if you need more information let me now (my name in Telegram is ZR1R)

something i noticed which is not connected to this problem:

for now i can mine with CPU, my name appears on the telemetry dashboard but after a while my name disappear and never show up again. (but my node and miner seems to work just fine without any trouble) maybe just a small bug?

[kyorozaka-dot]

please send here

https://github.com/Quantus-Network/quantus-miner/issues

and please send Telegram.

[n13]

Valid although as pointed out should probably be an issue on the miner repo

We would need to get this exact card or any AMD Radeon card and start debugging

Might also be fixed by now as a lot of the GPU code has been updated and fixed