hashcat Forum

Sure. Setup is

2x Intel(R) Xeon(R) CPU E5-2603 v3
32GB DDR4
3x NVIDIA GeForce GTX 980 Ti

I assume kernel is 4.4.0-31-generic, but since I'm no expert in the Linux world;
uname-a: 4.4.0.-31-linux-generic
cat /proc/version_signature: 4.4.0-31.50-generic 4.4.13
Only used NVIDIA driver 367.35 so far.

I've tried now with both (desktop) 14.04 TLS and (server) 16.04 TLS, and on both versions hashcat v3.0 issues these warnings (and won't retain the temperature specified with the flag**), whereas cudaHashcat v2.01 works just fine without issuing any warnings, which is frustrating since everything else is the same; drivers; installed libraries, etc.

If I set gpu-temp-retain=0, hashcat prints this during the initial phase;
Watchdog: Temperature abort trigger set to 90c
Watchdog: Temperature retain trigger set to 75c

While running under these settings, the temperatures stabilize at about {76c/77c | 83c | 78c/79c} ({device0|device1|device2}).

Some times setting gpu-retain-flag=0 (or a small number) results in no warnings about initial fan speed, but other times the warnings are issued. Kinda confusing.

But just to be clear about it, system works and is stable at the temperatures I've mentioned above (e.g. getting about 18791 MH/s total for all three devices for SHA1 during benchmark and about 17000 MH/s for brute force attack on unsalted SHA1; not sure how that is compared to tuned setups with the same devices, but at least it does the job for my need atm). So in that sense, this isn't a "big" deal, but it'd be nice to find out what causes this and how it can be "fixed". Obviously something isn't as it should be.

Please post your xorg.conf

Here you go


The RegistryDwords and other settings under the various screens stem from the commands posted here https://hashcat.net/forum/thread-3717-po...l#pid23470 .

Let me know if you want/need more information.

Tried with the latest source from github, still issuiing the same warnings. Starting to run out of ideas :x

I have a similar setup as you guys do. Running into the same problems. Here is what I did to resolve. Hopefully this helps...

Attempted to run xhost + in terminal, received MAGIC COOKIE error. This confirmed that .Xauthority has issues.

I found the path to the auth file that X was using with the following command:

for me, this path was:

I then set XAUTHORITY to the proper path:

then I was able to perform the following X configurations:

After performing the above (and installing libxnvctrl0 and libxnvctrl-dev) I was able to have hashcat control fan speed with no errors.

Thanks, that did the trick!