Can't get 8 gpu working under ubuntu

[CrazyGuy]

Reviving an old issue as I'm experiencing it now. Added a 4th 5970 and get the same error with cgminer and bfgminer. Is this a cgminer or linux limitation? I'm running xubuntu 12.04, 11.11 catalyst drivers and 2.5 sdk. I had 8 gpus working in linuxcoin with phoenix miner and no issues. Any way around this?

Original post by DeathByTaxes:

So I am trying to get 4x5970 working under Linux.

Aticonfig shows 8 GPUs but cgminer bombs out.

Code:

* 0.S 17:00.0 ATI Radeon HD 5900 Series
  1. 16:00.0 ATI Radeon HD 5900 Series
  2. 13:00.0 ATI Radeon HD 5900 Series
  3. 12:00.0 ATI Radeon HD 5900 Series
  4. 0b:00.0 ATI Radeon HD 5900 Series
  5. 0a:00.0 ATI Radeon HD 5900 Series
  6. 07:00.0 ATI Radeon HD 5900 Series
  7. 06:00.0 ATI Radeon HD 5900 Series

* - Default adapter

cgminer -n
Code:

X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (ATIFGLEXTENSION)
  Minor opcode of failed request:  67 ()
  Value in failed request:  0x17
  Serial number of failed request:  21
  Current serial number in output stream:  21

cgminer -D -T (w/ config file) has same error.

Unplugging PCIe power cables for one 5970 (6 active GPUs) works.

[CrazyGuy]

I spent a bit of time getting phoenix miner setup today and phoenix can only access 1 gpu. Since phoenix worked fine in linuxcoin I'm thinking it has something to do with the sdk perhaps? Or maybe the architecture, do I need a 64bit distro? I thought linuxcoin was 32bit...

[CrazyGuy]

I went ahead and installed the 64bit version of xubuntu, everything is working fine now.

[d3m0n1q_733rz]

Yeah, memory addressing issue.