Topic Title: HD7950: OS Lockup when device idle AFTER heavy load
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Created On: 02/26/2013 04:45 AM
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 02/26/2013 04:45 AM
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Joined: 02/26/2013

I recently upgraded to a 7950.  Everything seems to work fine, including gaming at high resolution, full detail etc.  However, after I go back to browsing the web after a gaming session, after 15-30 minutes the system starts freezing up periodically: the mouse cursor will freeze in place, nothing will happen on the screen, so it's pretty good and wedged.  It will usually unfreeze and go back to normal a few times, and eventually lock up alltogether and require a hard power cycle.

When it's starting to freeze up I've noticed high CPU utilization (50%, so I'm thinking all cores without HT).

If I try and do a graceful shutdown, shutdown hangs.  One time during shutdown after about 15 minutes I saw a BSOD which said something about driver entering an invalid power state.

When I notice things starting to slow down, I can someimes relaunch a game and things go back to being stable (!) as long as I keep the game running in the background.  (In fact that's how I'm writing this now.)

I've tried the drivers Windows recommends, as well as 13.1 and 13.2 beta but it doesn't seem to make any difference.

Graphics Card
Sapphire HD 7950 299-1e207-a00sa
no overclock (beyond whatever it ships with, if any)

AMD Catalyst Driver Version, and Driver History
Tried 13.1, 13.2 beta, whatever windows update suggests.

Operating System
Win 7 64 bit, Version 6.1.7601 Service Pack 1 Build 7601

Issue Details
see above

Motherboard or System Make & Model

Power Supply
Antec TruePower TP-650 650W

Display Device(s) and Connection(s) Used
CROSSOVER 27Q 27" DVI-D 2560x1440

Applications and Games
google chrome, windows task manager, the whole system
CPU Details

Motherboard BIOS Version

System Memory Type & Amount
GSKILL 4x2GB 1600 DDR3

Additional Hardware
1 boot HDD, with SSD cache provided by the intel chipset;
2 independent HDDs;
2 HDDs in raid 1

Additional Details
it's not lupus.
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