linux-kernel - Re: [linux-pm] Suspend to RAM, Sony Vaio PCG-SRX51P, lcd stays off

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Date:	Thu, 15 Feb 2007 12:56:12 +0100 (CET)
From:	"Mattia Dongili" <malattia@...ux.it>
To:	"Pavel Machek" <pavel@....cz>
Cc:	"Jan Dittmer" <jdi@....org>, stelian@...ies.net,
	linux-acpi@...r.kernel.org, linux-pm@...l.org, adaplas@....net,
	dawes@...ee86.org, "Linux kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [linux-pm] Suspend to RAM, Sony Vaio PCG-SRX51P, lcd stays off

On Thu, February 15, 2007 11:36 am, Pavel Machek said:
> Hi!
>
>> I own an older Sony Vaio SRX51P, European Model, P3 based. s2ram
>> identifies it with
>>
>>     sys_vendor   = "Sony Corporation    "
>>     sys_product  = "PCG-SRX51P(DE)      "
>>     sys_version  = "01                  "
>>     bios_version = "R0232U2"
>>
>> Suspend to RAM by using "s2ram -v -m -f" actually works and the
>> laptop comes back to life, is accessible by network, etc. kudos
>> so far.
>> The only but serious problem is, that the lcd stays off after
>> resume. No matter what kind of options for s2ram I try, if I disable
>
> Is the _lcd_ off or the _backlight_ off? Use bright flashlight to
> tell.
>
>> framebuffer or suspend from X, the lcd always stays off. Only
>> a reboot fixes this. Note that the X driver also cannot dis-/enable
>> the lcd (xset dpms force off). It always stays lit. I also tried
>> with i810switch, but that also does not affect the lcd.
>> spicctrl -b42 neither.

(unrelated to your suspend problems) does the sony-laptop (formerly
sony_acpi) module helps controlling brightness?
(should appear soon or you can eventually grab it from the linux-acpi tree)

>> Latest kernel I tested is 2.6.20-git11 from today.

I read reports of successful suspends on that laptop, eg:
http://freenet-homepage.de/obauer/index.html

-- 
mattia
:wq!


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