Bitcoin Forum
December 05, 2016, 02:48:04 PM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: OC --> Huge load --> Xorg 100% CPU  (Read 1723 times)
vulgata
Jr. Member
*
Offline Offline

Activity: 55


View Profile
July 09, 2011, 02:52:42 AM
 #1

So I'm mining on a single 6870 in Natty on my personal workstation that doubles as an apache2/Minecraft server.  Not a clean install, updated twice (?) through Lucid and Maverick.  I am running Catalyst 11.6, SDK 2.4, pyopencl 2011.1.2, python-jsonrpc rev. 19, and poclbm 2011.b7.  Everything runs fine at stock speeds (900 core, 1050 mem --> 280 mhash) but when I try to over/underclock at all (e.g., 1000 core, 300 mem) it works for a bit (310 mhash) then the load shoots up to 10+ (normally <<<1), everything becomes slow but not unresponsive, then after a few minutes the load drops to ~6-8 (quad core) while Xorg shoots up to 100% CPU and will not respond to kill -9.  The only way to resolve this is to reboot the machine.  Anyone have any ideas as to what could be going on?

Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1480949284
Hero Member
*
Offline Offline

Posts: 1480949284

View Profile Personal Message (Offline)

Ignore
1480949284
Reply with quote  #2

1480949284
Report to moderator
1480949284
Hero Member
*
Offline Offline

Posts: 1480949284

View Profile Personal Message (Offline)

Ignore
1480949284
Reply with quote  #2

1480949284
Report to moderator
1480949284
Hero Member
*
Offline Offline

Posts: 1480949284

View Profile Personal Message (Offline)

Ignore
1480949284
Reply with quote  #2

1480949284
Report to moderator
brunoshady
Sr. Member
****
Offline Offline

Activity: 264

Dubs Get


View Profile
July 09, 2011, 02:56:25 AM
 #2

try to increase the gpu voltage
vulgata
Jr. Member
*
Offline Offline

Activity: 55


View Profile
July 09, 2011, 02:57:04 AM
 #3

try to increase the gpu voltage

Any rules of thumb or guidelines or should I just wing it?

brunoshady
Sr. Member
****
Offline Offline

Activity: 264

Dubs Get


View Profile
July 09, 2011, 03:02:08 AM
 #4

try to increase the gpu voltage

Any rules of thumb or guidelines or should I just wing it?


hmm, can't tell you nothing about that, cuz I don't know shit hehe


but I guess it's no problem to increase a little bit, for example, from 1.088 to 1.150
bmgjet
Member
**
Offline Offline

Activity: 98


View Profile
July 10, 2011, 02:30:58 AM
 #5

Just watch temps when overvolting.
It wont let you go higher enough that it explodes since the voltage control is limited to max of 1.3V but thats enough to get get the chip hot enough to damage it on air cooling.

Donations to: 1BMGjetfht9XLkGBYR4TSsuXjrYEKACcow
1stbits: 1bmgjet
300MHash/s 6850 http://www.techpowerup.com/gpuz/5u6wr/
Overclocked for 6 years and still strong http://valid.canardpc.com/show_oc.php?id=1931458 & http://valid.canardpc.com/show_oc.php?id=285337
dunand
Hero Member
*****
Offline Offline

Activity: 625



View Profile
July 13, 2011, 11:19:09 AM
 #6

I had the exact same problem. I was able to mine for 15 minutes to 3 hours but at some points XORG take 100% CPU and everything freeze.

My solution is to use the default voltage for the card. Hope you find something better.
zard_cz
Newbie
*
Offline Offline

Activity: 16


View Profile
July 26, 2011, 05:02:47 PM
 #7

Ok, same problem here.. the miner has been working flawlessly for a month and now I have experienced this behaviour - and that was actually after I have increased cooling and airflow.

Do you have any tips what is actually causing this problem?
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!