8.5.5 client doesn't detect GPU
Posted: Sat Jan 31, 2026 5:29 pm
Hello everyone!
My computer runs Windows 11. Previously, I had client version 8.4.4. Everything worked fine on it.
But for some reason, I decided to update to 8.5.5.
And this version doesn't detect the GPU on my computer.
The worst part... I installed client 8.4.9, which worked before. But now the GPU isn't detected on it either.
I haven't changed the Windows version, and I haven't updated the NVIDIA drivers.
I just updated the client, and now the functionality is broken.
Could you tell me what the problem might be and how to fix it?


LOG Client
My computer runs Windows 11. Previously, I had client version 8.4.4. Everything worked fine on it.
But for some reason, I decided to update to 8.5.5.
And this version doesn't detect the GPU on my computer.
The worst part... I installed client 8.4.9, which worked before. But now the GPU isn't detected on it either.
I haven't changed the Windows version, and I haven't updated the NVIDIA drivers.
I just updated the client, and now the functionality is broken.
Could you tell me what the problem might be and how to fix it?


LOG Client
Code: Select all
*********************** Log Started 2026-01-31T14:44:41Z ***********************
14:44:41:I1:*********************** Folding@home Client ***********************
14:44:41:I1: Version: 8.5.5
14:44:41:I1: Author: Joseph Coffland <joseph@cauldrondevelopment.com>
14:44:41:I1: Org: foldingathome.org
14:44:41:I1: Copyright: 2023-2025, foldingathome.org
14:44:41:I1: Homepage: https://foldingathome.org/
14:44:41:I1: License: GPL-3.0-or-later
14:44:41:I1: URL: https://v8-5.foldingathome.org/
14:44:41:I1: Date: Dec 1 2025
14:44:41:I1: Time: 13:40:46
14:44:41:I1: Revision: 2c6fbaa45e4ee4854195a9f0d4b86300975b6543
14:44:41:I1: Branch: master
14:44:41:I1: Compiler: Visual C++
14:44:41:I1: Options: $( /TP $) /std:c++17 /nologo /EHa /wd4297 /wd4103 /O2
14:44:41:I1: /Zc:throwingNew /MT
14:44:41:I1: Platform: win32 10
14:44:41:I1: Bits: 64
14:44:41:I1: Mode: Release
14:44:41:I1: Args: --open-web-control
14:44:41:I1:****************************** CBang ******************************
14:44:41:I1: Version: 1.7.2
14:44:41:I1: Author: Joseph Coffland <joseph@cauldrondevelopment.com>
14:44:41:I1: Org: Cauldron Development
14:44:41:I1: Copyright: Cauldron Development, 2003-2025
14:44:41:I1: Homepage: https://cauldrondevelopment.com/
14:44:41:I1: License: LGPL-2.1-or-later
14:44:41:I1: Date: Dec 3 2025
14:44:41:I1: Time: 11:44:07
14:44:41:I1: Revision: 83a4be55c1b21d5383650f51a7887fd9c25b836c
14:44:41:I1: Branch: master
14:44:41:I1: Compiler: Visual C++
14:44:41:I1: Options: $( /TP $) /std:c++17 /nologo /EHa /wd4297 /wd4103 /O2
14:44:41:I1: /Zc:throwingNew /MT
14:44:41:I1: Platform: win32 10
14:44:41:I1: Bits: 64
14:44:41:I1: Mode: Release
14:44:41:I1:***************************** System ******************************
14:44:41:I1: CPU: Intel(R) Core(TM) i5-14600K
14:44:41:I1: CPU ID: GenuineIntel Family 6 Model 183 Stepping 1
14:44:41:I1: CPUs: 20
14:44:41:I1: Memory: 63.78GiB
14:44:41:I1:Free Memory: 58.07GiB
14:44:41:I1: OS Version: 6.2
14:44:41:I1:Has Battery: false
14:44:41:I1: On Battery: false
14:44:41:I1: Hostname: gamepc
14:44:41:I1: UTC Offset: 3
14:44:41:I1: PID: 14636
14:44:41:I1: CWD: C:\ProgramData\FAHClient
14:44:41:I1: Exec: C:\Program Files\FAHClient\FAHClient.exe
14:44:41:I1:*******************************************************************
14:44:41:I2:<config/>
14:44:41:I1:Opening Database
14:44:41:I1:F@H ID = W_ZHumLviVCVLtr8
14:44:41:I3:Loading default resource group
14:44:41:I2:Listening for HTTP on 127.0.0.1:7396
14:44:41:I3:Loaded 0 wus.
14:44:41:I2:No previous gpus.json
14:44:41:I1:Started Windows systray control
14:44:41:I1:Default:Added new work unit: cpus:20 gpus:
14:44:41:I1:WU20:Requesting WU assignment for user BestWeb team 0
14:44:41:I2:OUT1:> GET /machine/W_ZHumLviVCVLtr8i HTTP/1.1
14:44:41:I2:OUT3:> POST /api/assign HTTP/1.1
14:44:41:I2:OUT2:> GET /gpus HTTP/1.1
14:44:42:I2:OUT3:< HTTP/1.1 200 HTTP_OK
14:44:42:I1:WU20:Received WU assignment JfnDAd0HYlXNqwmLx97GI8Dt_uIPK1BZ_tw_O82HGX4
14:44:42:I1:WU20:Downloading WU
14:44:42:I2:OUT1:< HTTP/1.1 200 HTTP_OK
14:44:42:I2:OUT4:> POST /api/assign HTTP/1.1
14:44:42:I2:OUT5:> GET /ws/client HTTP/1.1
14:44:43:I1:WU20:DOWNLOAD 100% 219B of 219B
14:44:43:I2:OUT5:< HTTP/1.1 101 HTTP_SWITCHING_PROTOCOLS
14:44:43:I1:Logging into node account
14:44:43:I2:REQ6:< GET /api/websocket HTTP/1.1
14:44:44:I1:WU20:DOWNLOAD 100% 5.79MiB of 5.79MiB
14:44:44:I2:OUT4:< HTTP/1.1 200 HTTP_OK
14:44:44:I1:WU20:Received WU P18240 R1144 C0 G918
14:44:44:I1:Loaded cores/fahcore-a8-win-64bit-avx2_256-0.0.12/FahCore_a8.exe
14:44:44:I3:Running FahCore: C:\ProgramData\FAHClient\cores/fahcore-a8-win-64bit-avx2_256-0.0.12/FahCore_a8.exe -dir JfnDAd0HYlXNqwmLx97GI8Dt_uIPK1BZ_tw_O82HGX4 -suffix 01 -version 8.5.5 -lifeline 14636 -np 20
14:44:44:I3:WU20:Started FahCore on PID 17052
14:44:44:I1:WU20:*********************** Log Started 2026-01-31T14:44:44Z ***********************
14:44:44:I1:WU20:************************** Gromacs Folding@home Core ***************************
14:44:44:I1:WU20: Core: Gromacs
14:44:44:I1:WU20: Type: 0xa8
14:44:44:I1:WU20: Version: 0.0.12
14:44:44:I1:WU20: Author: Joseph Coffland <joseph@cauldrondevelopment.com>
14:44:44:I1:WU20: Copyright: 2020 foldingathome.org
14:44:44:I1:WU20: Homepage: https://foldingathome.org/
14:44:44:I1:WU20: Date: Jan 16 2021
14:44:44:I1:WU20: Time: 12:29:40
14:44:44:I1:WU20: Revision: c5816759c404e4b65f9f364c3d1ef554a67c4225
14:44:44:I1:WU20: Branch: master
14:44:44:I1:WU20: Compiler: Visual C++ 2019 16.7
14:44:44:I1:WU20: Options: /TP /std:c++14 /nologo /EHa /wd4297 /wd4103 /O2 /Zc:throwingNew /MT
14:44:44:I1:WU20: Platform: win32 10
14:44:44:I1:WU20: Bits: 64
14:44:44:I1:WU20: Mode: Release
14:44:44:I1:WU20: SIMD: avx2_256
14:44:44:I1:WU20: OpenMP: ON
14:44:44:I1:WU20: CUDA: OFF
14:44:44:I1:WU20: Args: -dir JfnDAd0HYlXNqwmLx97GI8Dt_uIPK1BZ_tw_O82HGX4 -suffix 01
14:44:44:I1:WU20: -version 8.5.5 -lifeline 14636 -np 20
14:44:44:I1:WU20:************************************ libFAH ************************************
14:44:44:I1:WU20: Date: Jan 16 2021
14:44:44:I1:WU20: Time: 11:24:13
14:44:44:I1:WU20: Revision: c5816759c404e4b65f9f364c3d1ef554a67c4225
14:44:44:I1:WU20: Branch: master
14:44:44:I1:WU20: Compiler: Visual C++ 2019 16.7
14:44:44:I1:WU20: Options: /TP /std:c++14 /nologo /EHa /wd4297 /wd4103 /O2 /Zc:throwingNew /MT
14:44:44:I1:WU20: Platform: win32 10
14:44:44:I1:WU20: Bits: 64
14:44:44:I1:WU20: Mode: Release
14:44:44:I1:WU20:************************************ CBang *************************************
14:44:44:I1:WU20: Date: Jan 16 2021
14:44:44:I1:WU20: Time: 11:23:53
14:44:44:I1:WU20: Revision: c5816759c404e4b65f9f364c3d1ef554a67c4225
14:44:44:I1:WU20: Branch: master
14:44:44:I1:WU20: Compiler: Visual C++ 2019 16.7
14:44:44:I1:WU20: Options: /TP /std:c++14 /nologo /EHa /wd4297 /wd4103 /O2 /Zc:throwingNew /MT
14:44:44:I1:WU20: Platform: win32 10
14:44:44:I1:WU20: Bits: 64
14:44:44:I1:WU20: Mode: Release
14:44:44:I1:WU20:************************************ System ************************************
14:44:44:I1:WU20: CPU: Intel(R) Core(TM) i5-14600K
14:44:44:I1:WU20: CPU ID: GenuineIntel Family 6 Model 183 Stepping 1
14:44:44:I1:WU20: CPUs: 20
14:44:44:I1:WU20: Memory: 63.78GiB
14:44:44:I1:WU20:Free Memory: 57.37GiB
14:44:44:I1:WU20: Threads: WINDOWS_THREADS
14:44:44:I1:WU20: OS Version: 6.2
14:44:44:I1:WU20:Has Battery: false
14:44:44:I1:WU20: On Battery: false
14:44:44:I1:WU20: UTC Offset: 3
14:44:44:I1:WU20: PID: 17052
14:44:44:I1:WU20: CWD: C:\ProgramData\FAHClient\work
14:44:44:I1:WU20:********************************************************************************
14:44:44:I1:WU20:Project: 18240 (Run 1144, Clone 0, Gen 918)
14:44:44:I1:WU20:Unit: 0x00000000000000000000000000000000
14:44:44:I1:WU20:Reading tar file core.xml
14:44:44:I1:WU20:Reading tar file frame918.tpr
14:44:44:I1:WU20:Digital signatures verified
14:44:44:I1:WU20:Calling: mdrun -c frame918.gro -s frame918.tpr -x frame918.xtc -cpt 5 -nt 20 -ntmpi 1
14:44:44:I1:WU20:Steps: first=229500000 total=229750000
14:44:45:I1:WU20:Completed 1 out of 250000 steps (0%)
14:44:45:I1:Machine state fold
14:44:49:I1:Machine state fold
14:45:05:I1:Account websocket closed: PROTOCOL msg=Failed to read header start
14:45:05:I2:OUT7:> GET /machine/W_ZHumLviVCVLtr8i HTTP/1.1
14:45:06:I2:OUT7:< HTTP/1.1 200 HTTP_OK
14:45:06:I2:OUT5:> GET /ws/client HTTP/1.1
14:45:07:I2:OUT5:< HTTP/1.1 101 HTTP_SWITCHING_PROTOCOLS
14:45:07:I1:Logging into node account
14:45:18:I1:WU20:Completed 2500 out of 250000 steps (1%)
14:45:27:I1:Account websocket closed: PROTOCOL msg=Failed to read header start
14:45:27:I2:OUT8:> GET /machine/W_ZHumLviVCVLtr8i HTTP/1.1