Quote from: mbender71 on February 13, 2014, 03:01:46 am

Has anyone successfully set the GPU voltage using cgminer under linux for a R9 290(X)?
I have my gpu clock, memory, and fan settings where I want them to be but I wouldn't
mind under-volting the GPU to save a little energy and heat. I *believe* cgminer wants
an exact voltage and not a delta but I could be wrong. I don't know what the normal
voltage is for a R9 290 and every attempt to enter an absolute value like 1.25 fails (out
of boundary). Many thanks in advance!

I have been in that same situation for the last two days. I found some good clocks that provide a rather good performance boost in-terms of c/m. I have my 290X's running at 1150/1150. The core increase raised my c/m by ~400, the problem is that I am having some heating issues (80C - 85C - 90C spikes)...I'll try to figure out a way to undervolt on linux, I'll post my solution here if I find anything. If you find something please share.

At the moment I have multiple .sh files that I execute after a system reboot. One sets the fan speed to 100%, and then overclocks my GPUs, one to initialize the miner, and the last one to monitor temps.

Edit: I found this http://sourceforge.net/projects/amdovdrvctrl/?source=navbar, I'll give it a try once I get home. It was last update Dec 13 2013.

Quote from: xxx2003gs on February 10, 2014, 06:46:52 am

Can I ask what you are using a version of the LINUX it?
I am using UBUNTU DESKTOP version
Only recognizes a GPU, only 2300C / M ，with 3800C/M so long way
Will there under LINUX how to modify the GPU CLOCK, MEM CLOCK, GPU fans

I tested on Gentoo. The command line tool to modify frequencies is aticonfig, which should work after enabling AMD Overdrive (see --help). How many GPUs do you have? For one GPU I would use -t 0,0 and for two -t 0,0,1,1 etc.

That's a missing library search path. execute the following command: export LD_LIBRARY_PATH=./:$LD_LIBRARY_PATH. After that start the miner.
EDIT: Could you use the address Pk3mHjZrW3HGmx5jMNaN1GhXT2WgXHjRCz if you wanna mine for me?