[Linux] Two cards recognized by aticonfig but not cgminer

I've been trying to figure out the root of this problem for a while now, and haven't found anything. I'm running Ubuntu Server 13.10, with the 14.1 ATI Driver and SDK v2.9 (I have tried a number of different version of both the driver and the SDK with similar results).

The two cards are recognized by the computer but I'm getting strange FGLRX errors when I try to run anything more than aticonfig --lsa

Code:

willis@miner1:~$ lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Bonaire XT [Radeon HD 7790/8770]
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Curacao PRO [Radeon R9 270]

Code:

willis@miner1:~$ aticonfig --lsa
* 0. 01:00.0 AMD Radeon HD 7700 Series
  1. 06:00.0 Supported device 6811

* - Default adapter

X.org is succesfully running:

Code:

willis@miner1:~$ ps ax | grep X
  988 tty7     S<s+   0:00 X :0
 1232 pts/3    S+     0:00 grep --color=auto X

But aticonfig claims it's not running:

Code:

willis@miner1:~$ aticonfig --adapter=all --odgt
ERROR - X needs to be running to perform AMD Overdrive(TM) commands

fglrxinfo and glxinfo both provide the same error message:

Code:

willis@miner1:~$ fglrxinfo 
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  153 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  12
  Current serial number in output stream:  12

But fglrx is loaded:

Code:

willis@miner1:~$ lsmod | grep fglrx
fglrx                8081247  0 
amd_iommu_v2           19054  1 fglrx

There's a strange error in the Xorg.0.log file, it seems to find the two cards:

Code:

[    20.773] ukiOpenDevice: node name is /dev/ati/card0
[    20.773] ukiOpenDevice: open result is 12, (OK)
[    20.858] ukiOpenByBusid: ukiOpenMinor returns 12
[    20.858] ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0
[    20.858] ukiOpenDevice: node name is /dev/ati/card1
[    21.130] ukiOpenDevice: open result is 12, (OK)
[    21.130] ukiOpenByBusid: ukiOpenMinor returns 12
[    21.130] ukiOpenByBusid: ukiGetBusid reports PCI:6:0:0

But later claims that there's not instance of them:

Code:

[    21.133] (WW) fglrx: No matching Device section for instance (BusID PCI:0@1:0:0) found
[    21.133] (WW) fglrx: No matching Device section for instance (BusID PCI:0@6:0:0) found

This is the xorg.conf I've been using (generated by aticonfig --adapter=all --initial --force):

Code:

Section "ServerLayout"
	Identifier     "Server Layout"
	Screen      0  "aticonfig-Screen[0]-0" 0 0
	Screen         "aticonfig-Screen[1]-0" RightOf "aticonfig-Screen[0]-0"
EndSection

Section "Module"
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[1]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[1]-0"
	Driver      "fglrx"
	BusID       "PCI:6:0:0"
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[0]-0"
	Device     "aticonfig-Device[0]-0"
	Monitor    "aticonfig-Monitor[0]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[1]-0"
	Device     "aticonfig-Device[1]-0"
	Monitor    "aticonfig-Monitor[1]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

So basically to sum up, the two cards are recognized by the computer, lspci shows them, aticonfig --lsa shows them, running anything else doesn't work with a cryptic fglrx message, or claiming that the X server isn't working (which it is). I don't really know where to go from here, I've tried swapping out drivers, tweaking the xorg.conf. Could PCI Latency have anything to do with it?

And here's the obligatory cgminer output:

Code:

willis@miner1:~$ cgminer -n
 [09:08:39] Log date is now 2014-02-16                    
 [09:08:39] CL Platform 0 vendor: Advanced Micro Devices, Inc.                    
 [09:08:39] CL Platform 0 name: AMD Accelerated Parallel Processing                    
 [09:08:39] CL Platform 0 version: OpenCL 1.2 AMD-APP (1214.3)                    
 [09:08:39] Error -1: Getting Device IDs (num)                    
 [09:08:39] clDevicesNum returned error, no GPUs usable                    
 [09:08:39] 0 GPU devices max detected