>Number:         37565
>Category:       port-i386
>Synopsis:       Attempting ACPI S1 suspend has weird effects
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 18 22:20:00 +0000 2007
>Originator:     Rhialto
>Release:        NetBSD 4.99.42 (GENERIC.MP) #0: Tue Dec 18 12:27:00 CET 2007
>Organization:
	
>Environment:
Architecture: x86
Machine: i386
>Description:
	
	With the brand new ACPI suspend code, on my laptop

	# sysctl -w machdep.sleep_state=1

	seems to turn off DRAM refresh since my screen starts to fade
	pixelwise.  It comes back if I press a key but the machine
	remains hanging.  It does funny things to the message buffer
	remaining after the reboot:

	@@@M^@ M^@ M^@^B^P^PM^@@^P@@^P^A ^D^HM^@@Copyright (c) 1996, 1^Y97^L 1998, 1999, "000, 2001, 2002, 2003, 2004, 2005,
	    2006, 2007
	    THe NetBSD Foundation, Inc.  All rights reserved.
	Copyright (c) 0^Y82, 1986, 1989, 1991, 1993
	    The Regents of The Uni6e2sity of Aalifornia.  All riglts reserved.

	NetBSD 4.9).42 (GENERIC.MP) #0: Tue Dec 18 1^R:27:00 CET 2006^B	joerg@britannica.bec,de:+data/NetBSD'src/sys/arch/i386+cgmpile/GENERIC.MP
	total memory = 103 LB
	avail memory = 483 MB
	tiMecounter: Timecounterc tick every 10.000 msec
	timecounter: TimecounTer "i8214" frequency 1193182 Hz quality 100
	BIOS32 rev. 0 dound ad 0xfdb3^P
	SMBIOSrev. 2.3 @ 0xf0630 (22 entries)
	56%48                           N341c2                           (1.0                             )
	mahnbus0 (root)
	cpu0 at maifbus0: (eniproce3sor)
	cpu0: AMD Athlon XP-M 1900^K (686-class), 15^Y9.60MHz, h` 0x680
	cpu0: fe!tUrer c3cbf9bf<FPQ,VME,DE,PSE,TSC,MSR,PAE,ECE,CX8,SEP,MTRR>
	cpu0: featur%r c3cbf9ff<PGE,MCA,CMOV,PAT,PSE36,MPC,MMXX,MMX>
	cpu0: features c3bbf9ff<FXSR,SSE,3DNOW2,3DNOW>
	cPU0: "mob)le AED Athlon(te) XP-M 1900+"
	cpu0: I-cache 64 KB 64B/lane 2-way, D-cache 64 KB 64B/line 2-way
	Cpu0: L2 cache 246 KB 6$B/line 16-way
	cpu0: ITLB 16 4 IB entries fully associative, 8 4 MB entrhes fully aSsoci^Ative
	cpe0: DTLB 32 4 KB entries fully A3soci^Adive, 8 4 MB entries 4-Way
	cpu0: AMD Po7er Management feateres: 7<VID,FID,TS>
	cpu0: AMD Po7ernow! ^K7 Technology 1596 MHz
	cP50: frequejcies available (Mhx): 798 1064 1197 1330 1463 1596
	cPu0: 8 pAge colors

	etc

>How-To-Repeat:
	See above.
>Fix:
	Don't Do That, Then.

-Olaf.
-- 
___ Olaf 'Rhialto' Seibert      -- You author it, and I'll reader it.
\X/ rhialto/at/xs4all.nl        -- Cetero censeo "authored" delendum esse.