linux-kernel - s2ram (was Re: [2/6] 2.6.21-rc2: known regressions)

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Message-ID: <20070310220440.GE2758@elf.ucw.cz>
Date:	Sat, 10 Mar 2007 23:04:40 +0100
From:	Pavel Machek <pavel@...e.cz>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Johannes Stezenbach <js@...uxtv.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Michael S. Tsirkin" <mst@...lanox.co.il>,
	Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Jeff Chua <jeff.chua.linux@...il.com>, linux-pm@...ts.osdl.org,
	lenb@...nel.org, linux-acpi@...r.kernel.org, luming.yu@...el.com,
	Arkadiusz Miskiewicz <arekm@...en.pl>,
	Konstantin Karasyov <konstantin.a.karasyov@...el.com>,
	Greg KH <greg@...ah.com>,
	linux-usb-devel@...ts.sourceforge.net,
	Thomas Meyer <thomas.mey@....de>, Meelis Roos <mroos@...ux.ee>,
	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>,
	Janosch Machowinski <jmachowinski@....de>,
	vladimir.p.lebedev@...el.com,
	Ash Milsted <thatistosayiseenem@...ab.com>,
	dmitry.torokhov@...il.com, linux-input@...ey.karlin.mff.cuni.cz,
	"Eric W. Biederman" <ebiederm@...ssion.com>, seife@...e.de
Subject: s2ram (was Re: [2/6] 2.6.21-rc2: known regressions)

Hi!

> > > Even if one doesn't use the fb console at all, radeonfb apparently 
> > > is still required on some ThinkPad models to work around BIOS bugs:
> > > 
> > > http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep#Radeon_GPU_not_powered_off
> > 
> > 
> > s2ram should be able to work around this, it has parts from 
> > radeontool. (suspend.sf.net).
> 
> i'm wondering, do you have any idea how Windows handles the 
> suspend/resume quirks problem area? Do they "curse BIOS vendors and 

Windows actually have (kernel) graphics drivers that know how to
resume the video. If you boot save mode, they go w/o graphics drivers,
and have similar problems to us.

> btw., the s2ram database seems quite a bit spotty:
> 
>  $ ./s2ram -n
>  Machine is unknown.
>  This machine can be identified by:
>      sys_vendor   = "System manufacturer"
>      sys_product  = "System Product Name"
>      sys_version  = "System Version"
>      bios_version = "ASUS A8N-E ACPI BIOS Revision 1008"
> 
>  $ ./s2ram -n
>  Machine is unknown.
>  This machine can be identified by:
>     sys_vendor   = "Hewlett-Packard "
>     sys_product  = "compaq nx9030 (PG630ET#ABD)       "
>     sys_version  = "Rev 1           "
>     bios_version = "F.15    "
>  See http://en.opensuse.org/S2ram for details.

Desktops are the problem; but that nx9030 should be reasonably easy to
add.

> even at the link above i didnt find any clear algorithm about how to 
> extend the quirks-list and the white-list - while i expect that most 
> people experience what i did: that s2ram doesnt know their boxes. 
> (otherwise they would not visit that URL at all i suspect)

Did you get options for s2ram that work on your systems? Mail them to
seife@...e.de, and he'll extend the whitelist ;-). In the meantime,
just use -f <whatever>
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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