Date: Wed, 20 Jul 2005 16:37:07 +0200 From: Bruno Ducrot <ducrot@poupinou.org> To: Tz-Huan Huang <tzhuan@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: Thinkpad t42 fn+f3 (Blank Screen) Message-ID: <20050720143707.GK2715@poupinou.org> In-Reply-To: <6a7033710507200150178fd9a6@mail.gmail.com> References: <42DD2F4B.7020805@root.org> <OF723057D6.7DCFAACC-ONC1257044.0023DB3C-C1257044.00241E0C@gateway-inter.net> <6a7033710507200150178fd9a6@mail.gmail.com>
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On Wed, Jul 20, 2005 at 04:50:02PM +0800, Tz-Huan Huang wrote:
> On 7/20/05, m.ehinger@ltur.de <m.ehinger@ltur.de> wrote:
> > If it helps, its the same behavior with 5.4 Release-p4.
> >
> > maik
>
> Its the same behavior in my Thinkpad X30 running 6-current (Jun 11):
> Fn+F3 doesn't work, Fn+F7 works on console but not in xorg 6.8.2.
> Other keys work perfectly.
>
> I can use ``xset dpms force off'' to turn off the LCD, but the back
> light is still on.
> I can set ``Option "MonitorLayout" "LFP+CRT" '' in device section
> with i810 driver
> of xorg.conf to display on both LCD and CRT in X, but I can't switch
> it dynamically.
Thanks you both for sending me the ASLs for your machine.
Unfortunately, I can't help yet looking around those ASLs.
The problem are:
1- the _Q12 method (which should be called if pressing
Fn+F3 if I understand correctly a previous email) will call
\_SB.PCI0.LPC.EC.HKEY.MHKQ (0x1003)
and at the MHKQ() will then call '\UCMS (0x0D) (if Arg0 is 0x1003)',
which in turn will call SMI(...) which is a call to a SMI handler (since
it will output 'something' to io port 0xb2). And it's pretty hard to
debug SMI handler somehow..
2- that method (MHKQ()) will also notify at the very end the device
'HKEY'. That one is 'Name (_HID, EisaId ("IBM0068"))' and therefore is
a propritary "device". We have to write a driver in order to handle
that 'notify' (and I must admit I don't know what to do even then).
Fortunately, there is enough materials under the video stuff.
Maybe looking for some sysctl will help if the acpi_video
device is enabled.
For the problem of switching videos between heads, I have to look
a little bit more, but I guess it is the same kind of issue.
--
Bruno Ducrot
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
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