When you get the black screen, try pressing Ctrl-Alt-F7
If that doesn't do anything, then try Ctrl-Alt-F1
Topic: Ubuntu Blacks Out - page 2. (Read 3817 times)
First, I must warn you that while I have some experience with Linux and Ubuntu, I'm no expert, so don't take what I say as fact.
You could try disabling any power-saving settings, but it seems to me Ubuntu is crashing somehow. Try setting fan speed higher, the 6990s need a lot of air throughput. You could be seeing the Linux equivalent of a BSOD if your cards are overheating. Also try just running Linux for awhile without mining, and see if the problem occurs or not.
You could try disabling any power-saving settings, but it seems to me Ubuntu is crashing somehow. Try setting fan speed higher, the 6990s need a lot of air throughput. You could be seeing the Linux equivalent of a BSOD if your cards are overheating. Also try just running Linux for awhile without mining, and see if the problem occurs or not.
Repost from the techical forum - which found no help. So, figured the miners would know 
I'm new to linux. I loaded Ubuntu 11.04, and then set up the mining rig using these instructions (6xxx install for 64 bit cpu):
http://forum.bitcoin.org/index.php?topic=7514.0
I did choose to install the SSH option just in case I use it later... figured it would not hurt to have the option installed for some later time I might experiment with it.
Symptoms:
I start up Ubuntu. Open a terminal and run one of the four miner instances (two for each 6990 card). I open another terminal window and set the fan speed to 60%.
I would open another terminal window and start another miner.. etc.. All would be cooking along fine. However, after a bit of time [and this is true even if I was ruinning only a single miner instance] the screen goes black, the fans slow down... apparently the miners stop mining. A couple times it seemed to happen when I moved or touched the keyboard or mouse. But that could be coincidental..but does seem suspiciously connected somehow. My keyboard and mouse are fine. So, the whole screen goes black, but there is a cursor at the left top and I can type stuff...but it doesn't do anything expect show what I typed. It's not the terminal...it's some other kind of mode. CNTRL+ALT+DEL reboots it. What is that black screen anyway?
I end up having to reboot each time... start miners...and [soon thereafter] it all shuts down again to the black screen of...frustration.
System:
Anthlon II X...
Two 6990's....
Anyone have any idea(s) on what is wrong?
I'm new to linux. I loaded Ubuntu 11.04, and then set up the mining rig using these instructions (6xxx install for 64 bit cpu):
http://forum.bitcoin.org/index.php?topic=7514.0
I did choose to install the SSH option just in case I use it later... figured it would not hurt to have the option installed for some later time I might experiment with it.
Symptoms:
I start up Ubuntu. Open a terminal and run one of the four miner instances (two for each 6990 card). I open another terminal window and set the fan speed to 60%.
I would open another terminal window and start another miner.. etc.. All would be cooking along fine. However, after a bit of time [and this is true even if I was ruinning only a single miner instance] the screen goes black, the fans slow down... apparently the miners stop mining. A couple times it seemed to happen when I moved or touched the keyboard or mouse. But that could be coincidental..but does seem suspiciously connected somehow. My keyboard and mouse are fine. So, the whole screen goes black, but there is a cursor at the left top and I can type stuff...but it doesn't do anything expect show what I typed. It's not the terminal...it's some other kind of mode. CNTRL+ALT+DEL reboots it. What is that black screen anyway?
I end up having to reboot each time... start miners...and [soon thereafter] it all shuts down again to the black screen of...frustration.
System:
Anthlon II X...
Two 6990's....
Anyone have any idea(s) on what is wrong?
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