Title: [NEWBIE] CGMiner doesn't detect my two gpus (scrypt mining) Post by: bernardbot on May 06, 2013, 03:17:54 PM Hello guys,
I have my shiny new rig and I decided to mine using Ubuntu 12.04. I actually found this forum really helpful, and would like to reply to some post explaining my configuration for auto-start services and /usr/bin/screen. It works like a charm from that point of view and I am really happy with it. The only problem I have, apart from overheating, is that cgminer doesn't recognize one of the two cards, disabling it at startup. The message it spits out is: Code: [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit As you can see, to keep the temperature low, I just mine at around 360-400 kH/s at the moment. How can I debug the problem? I have already checked the crossfire settings and the cards are NOT in crossfire at the moment (I read that it is not necessary). Thanks for your help guys! Title: Re: [NEWBIE] CGMiner doesn't detect my two gpus (scrypt mining) Post by: haarts on May 07, 2013, 08:35:11 AM How much RAM does your system have? I too have this problem, 3x7950 with 2GB RAM. I suspect this is not enough.
Title: Re: [NEWBIE] CGMiner doesn't detect my two gpus (scrypt mining) Post by: bernardbot on May 07, 2013, 01:41:32 PM It is a 4 GB system. I solved the error lowering the --thread-concurrency parameter to 8192...
Now I have another problem though...the engine freq on one card is always stuck to 300MHz...don't know why... Title: Re: [NEWBIE] CGMiner doesn't detect my two gpus (scrypt mining) Post by: bernardbot on May 07, 2013, 11:13:39 PM And this is the really weird thing (frequencies @ 300MHz ???) :
Code: GPU 1: 302.2 / 211.2 Kh/s | A:3 R:0 HW:6 U:2.03/m I:15 Below with the conservative conf with --thread-concurrency 8192, -I 15 (going to 84-85 very quickly on GPU 0). Code: [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit Here another weird thing. All the load on the second (the 0 is OFF), but the sensor reports 93 for the first. Code: [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit |