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Author Topic: r9 280x Sapphire only 600kh/s on Xubuntu Linux.  (Read 3699 times)
Lewnatic (OP)
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January 05, 2014, 12:27:15 PM
Last edit: January 05, 2014, 12:47:29 PM by Lewnatic
 #1

Hello guys, i got my mining hardware this week and started setting it up, following the guide of Cryptobadger: http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-linux/

The only difference is, that im using a r9 280x Sapphire Dual GPU. Currently running solo. Because i want to test first before i add additional GPUs. Before switching to Xubuntu i used the GPU on my Windows 7 PC. It was running nicely with 780kh/s but on Linux only 600kh/s. =\

Quote
Used Hardware:
AMD SEMPRON
PCU LC-Power Silent Giant LC6550GP2 Green Power 550W
Scandisk 16 USB-Stick with Xubuntu v12.10
Dual-x r9 280x Sapphire GPU
Asrock 970 Extreme4
1x 4GB G.Skill 1600mHz Ram


Following the guide everything works nicely. Beside one error.
Code:
sudo aticonfig --adapter=all --odgt

got me ...
Code:
ERROR - X needs to be running to perform AMD Overdrive(TM) commands

... everything else works properly. Seems like the cgminer settings are not the problem for that, more likely something with the drivers or maybe 280x opimized kernels for cgminer.

cgminer settings are this:

Code:
./cgminer --scrypt -o pool:socket -u x -p x --lookup-gap 2 --thread-concurrency 8191 -g 2 -I 13 -w 256 --memclock 1550 --gpu-engine 1150 --gpu-vddc 1.090 --shaders 2047 --auto-fan


Im trying to fix this problem the whole week but nothing really helps just getting 620kh/s at maximum.
Im kind of a Linux noob, so be warned. Cheesy

Cheers!
psijic
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January 07, 2014, 01:29:10 AM
 #2

Were you able to find a solution to your problem?

I'm also planning to buy the same cards, and am interested in the answer, in case I face the same issue.
avidwriter
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January 07, 2014, 06:39:58 AM
 #3

try running
Code:
sudo aticonfig --adapter=all --initial --force
 and make sure to install the SDK before the drivers.  do all of this from init 3.  this procedure has worked the best for me.  also shouldn't thread concurrency be 8192 instead?
Suave
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January 09, 2014, 11:02:47 PM
 #4

Also curious if you resolved this? Let us know. Smiley
pontiacg5
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January 09, 2014, 11:07:52 PM
 #5

You can't use cryptobadger's guide for 280's, he uses apt-get for fglrx drivers but they don't work with the 280x.

You need to go get the drivers from AMD's website, build the install for your version (I suggest saucy salamander) and install it. You need to uninstall the fglrx you installed with apt-get though, I don't know how. I reinstalled  Grin

I am also a real newbie to linux, but I managed to mangle enough of cryptobadgers guide as well as google-fu to find out how to build and install amd catalyst on Linux. Should be some good search terms for you in this post. Hope you get it working!



6 280's  Cheesy

Please DO NOT send me private messages asking for help setting up GPU miners. I will not respond!!!
twistedtrick
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January 10, 2014, 04:56:40 PM
 #6

I am building my 4x 280x rig today and was planning on following Cryptobadger's guide, so thank you!
Lewnatic (OP)
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January 11, 2014, 01:25:12 PM
 #7

(Its a bit strange but this thread is doubled.)

I got a solution for my problem,though. To keep this issue updated. Smiley
I hope this will help those, who had the same issue.

Thread: https://bitcointalk.org/index.php?topic=399819.msg4393272#msg4393272

Cheers!
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