Subject: Re: Call for testing: ACPI standby/suspend support
To: Steven M. Bellovin <>
From: Jared D. McNeill <>
List: tech-kern
Date: 03/09/2006 14:15:04
On Thu, 9 Mar 2006, Steven M. Bellovin wrote:
>> One other oddity: when I *resume* from suspending, the laptop starts
>> blinking a suspend indicator (a small moon-shaped LED), and when I
>> suspend again, it turns off. This seems slightly backwards, but I
>> don't know what layer is responsible for it.
> I wonder if that's related to the mutex.  A blinking crescent is supposed to indicate that it's in the process of suspending.  At a wild guess, there was some code that should have been entered that would turn it on *and* grab the mutex.

FWIW, this mutex message is new. When I was working on this many blinking 
crescents ago, I never saw the message. Perhaps it's a bug in the current 
Intel acpica code (it's been known to happen).