[ltp] Re: Brightness and Suspend on T61 6459-CTO

[Mike Kershaw]

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On Tue, Nov 06, 2007 at 09:23:27PM +0100, Mathias Moser wrote:
> Am Dienstag, den 06.11.2007, 10:44 -0500 schrieb Mike Kershaw:
> > > I have a T61 with the same video, although my wireless is the 4965. I
> > > cannot get the brightness to work without going to the command line
> > > either. I have followed the Ubuntu threads on this and I haven't heard
> > > of anyone else succeeding either.
> >=20
> > This problem was solved (for me) with the latest IBM bios release,
> > October 18, bios 1.26, 7KET56WW.  In-X brightness works now via the hw
> > keys and acpi/ibm/brightness.  Hopefully this solves it for you too.
>=20
> Just to get this straight: You got brightness working with the Nvidia
> 140M on a T61? Which version of the Nvidia-drive are you using?
>=20
>=20
> I quoted you on
> http://www.thinkwiki.org/wiki/NVidia_Quadro_NVS_140m#LCD_Backlight_Bright=
ness_Control_on_T61.2FR61
> hope that's ok...

(II) NVIDIA dlloader X Driver  100.14.19  Wed Sep 12 14:14:20 PDT 2007
(II) NVIDIA(0): NVIDIA GPU Quadro NVS 140M (G86GL) at PCI:1:0:0 (GPU-0)

2.4.24rc1, unpatched thinkpad-acpi (still 7-layer brightness).
In-X brightness did NOT work with bios image shipped with the laptop,
however since upgrading to 1.26 7KET56WW, in-X brightness works as
expected with the binary nvidia drivers, with the brightness keys
(fn-home/end) and with "echo level X > /proc/acpi/ibm/brightness".

So yes - with the latest bios, brightness control appears to work inside
X with the binary nvidia drivers.  While I haven't tested with older
kernels, I would expect it to work on them since it didn't work
prior to the bios change on my current kernel.

-m

--=20
Mike Kershaw/Dragorn <dragorn@kismetwireless.net>
GPG Fingerprint: 3546 89DF 3C9D ED80 3381  A661 D7B2 8822 738B BDB1

Know the rules other people live by. Know them well. Know them in the same=
=20
way terrorists know about cars: so that you know where to put the bomb.

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