Re: port-i386/37565

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

The following reply was made to PR port-i386/37565; it has been noted by GNATS.

From: Jukka Ruohonen <jruohonen%iki.fi@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: port-i386/37565
Date: Wed, 4 Aug 2010 12:04:18 +0300

 It is well known that S1 may have weird effects. In particular, I think
 the described behavior (S1 turns off screen refresh) is expected.
 
 I'll quote Len Brown (from Intel, the head of Linux ACPI) from a similar
 discussion:
 
   "I'm not aware of any ACPI systems that can keep the display enabled
    when in S1 (or S3).  If you've been able to get into this state,
    I'd like to know more about it."
 
    [...]
 
   "Yep, that is why nobody uses S1."                                  
                                                 
   "S1 often combines the the worst of both worlds:
    the high power consumption of S0 plus the unavailability of S3."
 
 I think we should probably return ENOTSUP for S1 in acpi_enter_sleep_state().