ACPI power state detection (PowerMizer)

Cyborg16 · 05-26-11, 07:10 AM

I have a question: how does the nvidia driver detect power state changes?

The following always lists 0 (AC power); any ideas what might be wrong?

Code:

nvidia-settings -q GPUPowerSource -t

(I'm running debian wheezy on a lenovo T410.)

Cyborg16 · 06-08-11, 05:15 AM

OK, so I've found out that the power source does get updated, but not for perhaps 10-30 minutes. I've attached an nvidia-bug-report, but it's too big when compressed with gzip or bzip2 to be accepted, so it's lzma compressed (rename, then unlzma should restore it to a text file).

More information on this problem: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629418

Someone else with the same symptoms, albeit a rather older driver version (185): http://www.nvnews.net/vbulletin/showthread.php?t=133555

alexmurray · 06-08-11, 08:04 AM

Updates instantly for me (Ubuntu Natty 11.04, NVIDIA Driver version 270.41.06, on MacBook Pro 5,1 - 9600M GT)

05-26-11, 07:10 AM	#1
Cyborg16 Registered User Join Date: Jan 2006 Posts: 5	ACPI power state detection (PowerMizer) I have a question: how does the nvidia driver detect power state changes? The following always lists 0 (AC power); any ideas what might be wrong? Code: nvidia-settings -q GPUPowerSource -t (I'm running debian wheezy on a lenovo T410.)

06-08-11, 08:04 AM	#3
alexmurray Registered User Join Date: Mar 2010 Posts: 11	Re: ACPI power state detection (PowerMizer) Updates instantly for me (Ubuntu Natty 11.04, NVIDIA Driver version 270.41.06, on MacBook Pro 5,1 - 9600M GT)