Ubuntu and Trifire

[jakrzys]

Hello all
Is trifire-2x5870 and 5850 possible on ubuntu? all is oK, crossfire work, but when i try enable trifire i get:

aticonfig --adapter=0 --crossfire=on
CrossFire chain(s) enabled
CrossFire does not support on this platform

but:

CrossFire chain for adapter 0, status: enabled
0. 01:00.0 ATI Radeon HD 5800 Series
1. 02:00.0 ATI Radeon HD 5800 Series
2. 04:00.0 ATI Radeon HD 5800 Series

[jakrzys]

More info here.
What is wrong, work only 2 cards

ubuntu 10.10 catalyst 11.5, mainboard DFI lanparty 790FX, athlon 3200+ 2xHD5870 1xHD5850

aticonfig --lsa
* 0. 01:00.0 ATI Radeon HD 5800 Series
1. 02:00.0 ATI Radeon HD 5800 Series
2. 04:00.0 ATI Radeon HD 5800 Series


aticonfig --lscc
Master adapter: 0. 01:00.0 ATI Radeon HD 5800 Series
Candidates: 2. 04:00.0 ATI Radeon HD 5800 Series


aticonfig --adapter=0,1,2 --cfa
CrossFire chain added


aticonfig --adapter=0 --cf=on
CrossFire chain(s) enabled
CrossFire does not support on this platform


CrossFire chain for adapter 0, status: enabled
0. 01:00.0 ATI Radeon HD 5800 Series
1. 02:00.0 ATI Radeon HD 5800 Series
2. 04:00.0 ATI Radeon HD 5800 Series


aticonfig --lscs
Candidate Combination:
Master: 1:0:0
Slave: 4:0:0
CrossFire is enabled on current device
CrossFire Diagnostics:
There is CrossFire Side port connection between GPUs
CrossFire can work with P2P write through peer aperture
Dongle Capabilities: support PASSTHROUGH |INTERLINK_SW_AFR | INTERLINK_AUTO_AFR | INTERLINK_BLACKING | INTERLINK_SUPERAA