Hashcat 4.2 does not crack some hashes

[arashkamangir70]

I use AMD HD 6990 GPUs with hashcat 4.2
in some example of hashcat, some hashes does not crack. like rar5( mode 13000) winzip(13600).

but when i use hashcat 3.2 they have been cracked.

windows 7 64 bit
catalyst 15.7.1

[philsmd]

sounds like a driver bug that doesn't work correctly with the new OpenCL kernel code.
It's quite an old GPU. I'm not sure if we could do anything here (it could probably work with some volatile variables etc, as it often does)

[epixoip]

HD 6990 is VLIW4, which AMD has dropped support for, and Catalyst 15.7.1 is too old for Hashcat. From front page:

Code:

GPU Driver requirements:
AMD GPUs on Windows require "AMD Radeon Software Crimson Edition" (15.12 or later)

[arashkamangir70]

HD 6990 is VLIW4, which AMD has dropped support for, and Catalyst 15.7.1 is too old for Hashcat. From front page:

Code:

GPU Driver requirements:
AMD GPUs on Windows require "AMD Radeon Software Crimson Edition" (15.12 or later)

thank you for your attention


i now, therefore with ddu, i uninstall previous driver and install crimson-relive-16.2.1 driver. hashcat 4.2.1 can not cracked some hashes but hashcat 3.2 Works well.