AMD BSOD driver problem for crossfire users with new 10.6 drivers

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Modelworks

Lifer
Feb 22, 2007
16,240
7
76
I installed the 10.6 drivers and again my system BSOD during the night. The same problem I was having with the 10.5 drivers. I solved it by disabling the amdkmdag service. If you check event viewer and system there should be a couple events referencing it before the crash.

amdkmdag is one of those services that are run by an application and will not show under admin tools/services.

I use process hacker to change it from delayed start to disabled.
http://processhacker.sourceforge.net/

Click the services tab, find amdkmdag , right click pick properties, change to disabled.

I had done this with the 10.5 drivers but the 10.6 install enabled it again.
 

rgiggs23

Junior Member
Jun 21, 2010
2
0
0
F***** strange. I got catalyst 10.4 and i have very very rare ( maybe 1 time of 30 times ) BSOD when ALT+TAB game from fullscreen to window mode , like Crysis.
Now i see that catalyst 10.6 will be the worst thing :) So i dont install. This bsods its very often on 10.6?


Ahh and i got single 5870. NO CF.
 

Modelworks

Lifer
Feb 22, 2007
16,240
7
76
I looked inside the atikmdag.sys file to see what it controls. It appears to be related mainly to HDMI and video playback using ati UVD. Appears to be related to setting up protected content display. Alt+Tab in and out of applications might be screwing with the protections inside it. Disabled it and all video functions still work but I haven't tried any bu-ray.
http://en.wikipedia.org/wiki/Unified_Video_Decoder

Some of the strings inside :
SMGetHDCPInfo:: could not obtain HDCP info......
Revoked HDCP display detected
ApplyDisplayProtection - Is repeater....ApplyDisplayProtection - KSVList
ApplyDisplayProtection: HDCP configured
OPM Certificate Size:: Success
COPP Certificate Size:: Success
OPM Get Certificate Size:: Fail
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
I looked inside the atikmdag.sys file to see what it controls. It appears to be related mainly to HDMI and video playback using ati UVD. Appears to be related to setting up protected content display. Alt+Tab in and out of applications might be screwing with the protections inside it. Disabled it and all video functions still work but I haven't tried any bu-ray.
http://en.wikipedia.org/wiki/Unified_Video_Decoder

Some of the strings inside :
SMGetHDCPInfo:: could not obtain HDCP info......
Revoked HDCP display detected
ApplyDisplayProtection - Is repeater....ApplyDisplayProtection - KSVList
ApplyDisplayProtection: HDCP configured
OPM Certificate Size:: Success
COPP Certificate Size:: Success
OPM Get Certificate Size:: Fail
If I recall correctly, isn't it also involved in catching driver crashes? The last time I had an AMD card crash on me, I'm sure the error recovery message mentioned atikmdag. Disabling atikmdag may disable driver recovery if this is the case.