Does anyone know of an easy way to dump the power-capabilities for the
devices in the system (to identify which device is preventing the system
from going into standby) Right now I am going through the device manager
trying to find something that does not support a low-power state but
this is tedious… A command line utility that dumps the power
capabilities and mappings for all devices in the system would be
extremely useful right now…
Any suggestions?
-Zach
All devices can go into D0 and D3 which means that technically speaking,
no device’s power caps will present the machine from going to a
particular Sx state because of device power capabilities. OTOH, if the
device is supposed to be armed for wake while in Sx it might try to fail
a particular Sx state that it cannot wake from.
I think there will be an entry in the system event log indicating which
device failed the query Sx irp and prevented a particular Sx transition,
but I can’t remember for sure. You also used to get a pop up telling
you which devices failed the query Sx as well, but I think that went
away…
d
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Gray, Zachary C
Sent: Friday, December 08, 2006 3:54 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] easy way to dump power capabilities of all devices in
system?
Does anyone know of an easy way to dump the power-capabilities for the
devices in the system (to identify which device is preventing the system
from going into standby) Right now I am going through the device manager
trying to find something that does not support a low-power state but
this is tedious… A command line utility that dumps the power
capabilities and mappings for all devices in the system would be
extremely useful right now…
Any suggestions?
-Zach
Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256
To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer