Hashcat 6.1.1 Upgrade Broke My Install

[Dawbs]

Hi,

I had been running HC 6 beta and then 6.0.0 with no problems. Installed all the CUDA drivers & everything was fine except for a CPU error (outdated pocl) which just notified in red but still ran fine.

I upgraded to 6.1.1 a few days ago and ever since then every time I start hashcat it hangs for about 45 seconds after displaying (in yellow):

`Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.`


It then continues to run fine but does now also has a delay if I either q out or press ^c


I have updated the CPU driver (No longer shows red) / Uninstalled HC & reinstalled both 6.0.0 & 6.1.1 but still hangs for 45 seconds.

Tried running with both --backend-ignore-opencl which makes no difference & --backend-ignore-cuda which still takes 45 seconds but now displays (in yellow):
Device #1: CUDA SDK Toolkit installation NOT detected.
            CUDA SDK Toolkit installation required for proper device support and utilization
            Falling back to OpenCL Runtime
Device #2: CUDA SDK Toolkit installation NOT detected.
            CUDA SDK Toolkit installation required for proper device support and utilization
            Falling back to OpenCL Runtime
and the same for Device 3, 4

Any advice before I wipe the whole machine & start all over again?


Many thanks in advance


Additional info:

O/S: Ubuntu 20.04

Full (startup) output of hashcat

hashcat (v6.0.0) starting in benchmark mode...

Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.

***HANGS AT THIS POINT FOR 45 SECONDS***

CUDA API (CUDA 9.1)
===================
* Device #1: GeForce GTX 1080 Ti, 10997/11177 MB, 28MCU
* Device #2: GeForce GTX 1080 Ti, 11015/11178 MB, 28MCU
* Device #3: GeForce GTX 1080 Ti, 11015/11178 MB, 28MCU
* Device #4: GeForce GTX 1080 Ti, 11015/11178 MB, 28MCU

OpenCL API (OpenCL 1.2 CUDA 9.1.84) - Platform #1 [NVIDIA Corporation]
======================================================================
* Device #5: GeForce GTX 1080 Ti, skipped
* Device #6: GeForce GTX 1080 Ti, skipped
* Device #7: GeForce GTX 1080 Ti, skipped
* Device #8: GeForce GTX 1080 Ti, skipped

OpenCL API (OpenCL 2.1 LINUX) - Platform #2 [Intel(R) Corporation]
==================================================================
* Device #9: Intel(R) Xeon(R) CPU E7- 4860  @ 2.27GHz, skipped

Benchmark relevant options:
===========================
* --optimized-kernel-enable

Hashmode: 0 - MD5