cgminer detect only 3 of 4 gpu cores on 2x6990

[tex83rb]

hello, i have 2x6990 with right amount of power (2xpsu combined with add2psu for a total of 1950 w   )

but mining with cgminer it detect only 3 cores of 4 total cores (2 cores for each card)

the error that prompt is


ADL found less devices than opencl!

Use the gpu map feature to reliably map OpenCL to ADL

WARNING: Number of OpenCL and ADL devices did not match!

i'm on windows 8 x64 , and on system devices are correctly detected 4 cores of cards....

driver is 13.1

since with 13.4 cgminer went to crash from command line

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[tex83rb]

rebooting and removing again and adding again the drivers through control panel ---> installed devices it worked and also cgminer found 4/4 cores.


however mining with 4/4 cores leads to another software error

(since i saw through power consumtion meter that with 4/4 consumption is almost 1.000 w , i now have 1200+750 w psus so it is not possible that power is now enough)

Crash dump directory: C:\WINDOWS\Minidump

Crash dumps are enabled on your computer.

On Sat 01/06/2013 15.25.31 GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\060113-23337-01.dmp
This was probably caused by the following module: atikmpag.sys (atikmpag+0x9410)
Bugcheck code: 0x116 (0xFFFFFA800ADD7010, 0xFFFFF88005C30410, 0xFFFFFFFFC00000B5, 0xA)
Error: VIDEO_TDR_ERROR
file path: C:\WINDOWS\system32\drivers\atikmpag.sys
product: AMD driver
company: Advanced Micro Devices, Inc.
description: AMD multi-vendor Miniport Driver
Bug check description: This indicates that an attempt to reset the display driver and recover from a timeout failed.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmpag.sys (AMD multi-vendor Miniport Driver, Advanced Micro Devices, Inc.).
Google query: Advanced Micro Devices, Inc. VIDEO_TDR_ERROR



On Sat 01/06/2013 15.25.31 GMT your computer crashed
crash dump file: C:\WINDOWS\memory.dmp
This was probably caused by the following module: atikmpag.sys (0xFFFFF88005C30410)
Bugcheck code: 0x116 (0xFFFFFA800ADD7010, 0xFFFFF88005C30410, 0xFFFFFFFFC00000B5, 0xA)
Error: VIDEO_TDR_ERROR
file path: C:\WINDOWS\system32\drivers\atikmpag.sys
product: AMD driver
company: Advanced Micro Devices, Inc.
description: AMD multi-vendor Miniport Driver
Bug check description: This indicates that an attempt to reset the display driver and recover from a timeout failed.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmpag.sys (AMD multi-vendor Miniport Driver, Advanced Micro Devices, Inc.).
Google query: Advanced Micro Devices, Inc. VIDEO_TDR_ERROR


it seems that the amd driver goes to crash . atikmpag.sys is the responsable.

currently i have 8 gb ram ddr 3.

i don't know what it cause that error....

[tex83rb]

edit: the system goes to crash also with 3 cores. it seems that the driver is not able to manage computing of more than 2 cores....