From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Dittmer Subject: Re: [linux-pm] Suspend to RAM, Sony Vaio PCG-SRX51P, lcd stays off Date: Thu, 15 Feb 2007 11:41:54 +0100 Message-ID: <45D438F2.2040607@l4x.org> References: <45D43489.3060409@l4x.org> <20070215103639.GB27338@elf.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20070215103639.GB27338@elf.ucw.cz> Sender: linux-acpi-owner@vger.kernel.org To: Pavel Machek Cc: stelian@popies.net, linux-acpi@vger.kernel.org, linux-pm@osdl.org, adaplas@pol.net, dawes@xfree86.org, Linux kernel List-Id: linux-pm@vger.kernel.org Pavel Machek wrote: > 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. The lcd. If you press the lid button you get the same effect (but you cannot use it to turn the lcd on again :-(( ). But I'll doublecheck with a flashlight nevertheless. >> 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. >> Latest kernel I tested is 2.6.20-git11 from today. >> >> So has anyone of you suspend, acpi, sonypi, fb people an idea how to fix >> this? I suspect one has to call some magic ACPI method upon resume? What >> other kind of information would be needed to debug this? Anything more >> to try? Are there some sony people here listening who can fix this? > > sonypi people actually might know how to help... > >> 00:02.0 VGA compatible controller: Intel Corporation 82815 CGC > [Chipset Graphics Controller] (rev 11) > > Wait a moment, did not Intel release nice, commented, GPLed sources > for their graphics cards somewhere? That might help. URL? But I suspect the lcd on/off is controlled by some embedded controller or such (reachable via acpi, at least I've an EC0 in /proc/acpi/). Jan