Re: MCP limit log messages, 2.6.36-rc4

From: Tim Gardner
Date: Wed Sep 15 2010 - 15:20:13 EST


On 09/15/2010 11:47 AM, Tim Gardner wrote:
I've been getting regular MCP limit log messages on a Dell Studio 1458
(i5 CPU) with an A02 BIOS. With the attached debug hack it prints the
following values:

[ 33.605098] intel ips 0000:00:1f.6: MCP limit exceeded: Avg power
30123, limit 1023
[ 38.597998] intel ips 0000:00:1f.6: MCP limit exceeded: Avg power
21697, limit 1023
[ 43.590917] intel ips 0000:00:1f.6: MCP limit exceeded: Avg power
15390, limit 1023
[ 48.583821] intel ips 0000:00:1f.6: MCP limit exceeded: Avg power
43370, limit 1023
[ 53.576740] intel ips 0000:00:1f.6: MCP limit exceeded: Avg power
64728, limit 1023

This is an idle machine which starts printing these messages about 30
seconds after boot. Any thoughts?

rtg

More clues:

[ 13.426064] intel ips 0000:00:1f.6: Warning: CPU TDP doesn't match expected value (found 25, expected 35)
[ 13.426086] intel ips 0000:00:1f.6: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[ 13.426933] intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 95

--
Tim Gardner tim.gardner@xxxxxxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/