Re: Bug#677472: [3.1->3.2 regression] Immediate wake on suspend, associated with OHCI on MCP51

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On Thu, 03 Jan 2013 11:22:19 -0800, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
wrote:

On Thu, 3 Jan 2013, [ISO-8859-1] Frank Sch�fer wrote:

Ok, I tried switching the ports to +5VSB.
That makes S3 work (no immediate wakeups).
The problem is, that with this setting, the USB ports are powered ALWAYS
(even when the computer is switched off completely).
Great, especially when you have a USB device connected with lots of LEDs
(or just an ordinary optical mouse)... :(

I just wanted to mention the following link to this FAQ on the Asus
website. They blame the OS (Vista) for this, but they don't provide any
workaround information, except what we already know: either switch to
+5VSB or disable wakeups.

http://support.asus.com/FAQ/Detail.aspx?no=7E9E847A-6F0F-DE5A-BF73-6733215FD3BD&p=1&m=P5N-E%20SLI

Looking for "7E9E847A-6F0F-DE5A-BF73-6733215FD3BD" site:asus.com
shows that this FAQ is not exclusive of nVidia-based systems.

So the title of this bug may be wrong. I wonder if there is any
non-Asus system with MCP51 that behaves correctly.

And yes, I second Frank's question:

Is there way to determine if the port is powered permanently?

Does the output of any utility (dmidecode, or whatever other
utility) change if power is on +5V or +5VSB? Any BIOS setting?

If not, then what would the sanest default be? Where to document
this cas in a clean, user friendly way?

I'd test it myself but my test machine died a while ago.

Best regards.



--
Octavio.
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