Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 2 Jun 2015 22:45:47 +0200
From: Luis Rocha <>
Subject: Re: Multiple GPU and Fork

I'm running Ubuntu 14.04.2 LTS and In this case I had X running.
So, I disabled the x11-common service and added the line
GRUB_CMDLINE_LINUX_DEFAULT="text" to /etc/default/grub. Upon restart the
system does not start X.
I launched JtR, but the same behavior. Interesting, without X, JtR is
slower starting ... on a different topic not having X breaks oclHashcat1.36
- ADL_Overdrivev5_CurrentActivity_Get()

Any other things I could try?

PS: I am running this version of Ubuntu and Cat Driver (14.9)  in order to
have the latest oclhashcat capability.

Thank you,

On Tue, Jun 2, 2015 at 9:55 PM, magnum <> wrote:

> On 2015-06-02 21:19, Solar Designer wrote:
>> On Tue, Jun 02, 2015 at 08:48:32PM +0200, Luis Rocha wrote:
>>> # ./john --format=md5crypt-opencl --dev=0,1 --fork=2
>>> initUnicode(UNICODE, ASCII/ASCII)
>>> Loaded 1726 password hashes with 1726 different salts (md5crypt-opencl,
>>> crypt(3) $1$ [MD5 OpenCL])
>>> Node numbers 1-2 of 2 (fork)
>>> Device id 0 not working correctly, skipping.
>>> Device id 1 not working correctly, skipping.
>>> No OpenCL devices found
>> Yes, --fork fails like that with newer versions of Catalyst - those that
>> no longer require X running to access the individual devices via OpenCL.
>> I don't yet know if this can be worked around by starting X anyway or
>> not - you may try.
> I had no idea about this problem. For AMD I use to run a minimal xdm thing
> just out of habit, with both devices configured, and that works fine with
> Cat 14.9.
> magnum

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.