[ltp] X61 Brightness Question

[Hendrik-Jan Heins]

OK,

I went to init 1, unloaded acpid and hald.
And was only left with thinkpad-acpi.
None of the buttons worked.

I unloaded the module and reloaded it with: thinkpad-acpi
experimental=1 hotkey=enable,0xffffffff brightness_mode=2

But to no avail. None of the buttons worked.
I went on, loaded back to init5, with acpid loaded, and all the
buttons worked again, so indeed it seems that acpid is running the
show here :-/

Now what do I do?

Hendrik-Jan

2007/8/16, Henrique de Moraes Holschuh <hmh@hmh.eng.br>:
> On Wed, 15 Aug 2007, Hendrik-Jan Heins wrote:
> > > And it certainly wouldn't work right when reading brightness if you used
> > > anything but thinkpad-acpi to change it.
> > >
> > Well, in dmesg it actually says it recognises an X61 and my bios
> > revison, so I think that works?
>
> It just means the firmware looks like a thinkpad's :-)  it is there so that
> i don't have to ask about it every time I get a debug dump, and because the
> driver actually needs that information for bug workaronds and such.
>
> > > > Actually now I do see 0-7 brightness levels in
> > > > /sys/class/backlight/thinkpad_screen/actual_brightness
> > > > Shouldn't I see more levels?
> > >
> > > Yes, but I didn't figure out how to detect a 16-level thinkpad yet from the
> > > ACPI tables.
> > >
> > Maybe you shouldn't try to detect it, but set it. Apparently it is
> > known how many levels there are for each type of thinkpad?
>
> That would mean an assumption I have to keep chasing after. Yes, I *can* do
> it and ask the user to select which mode, and add a blacklist for the few
> Lenovo thinkpads that have only 7 levels... but if I can detect it for real,
> that would be best.  I just didn't have the time to go after that yet, and
> nobody else seems to be trying to.
>
> > Right.. But I cannot get that to work with the kernel modules!
>
> You should be able to with 2.6.22, AFAIK.  Try it in single-user mode, with
> no crap loaded but the video module.  Make *sure* HAL and acpid are *not*
> running.  Keys should work. Do they?
>
> --
>   "One disk to rule them all, One disk to find them. One disk to bring
>   them all and in the darkness grind them. In the Land of Redmond
>   where the shadows lie." -- The Silicon Valley Tarot
>   Henrique Holschuh
>