[arch-general] thinkpad t61 and not able to adjust brightness

[Jon Kristian Nilsen]

Hm, strange, works fine here on t61p , standard archlinux kernel, nothing
out of the ordinary.

On Tue, Apr 28, 2009 at 3:36 PM, Michael Schaefer
<archlinux.org at micele.de>wrote:

> I've similar problem here with my X60s.
>
> echo 'up' >! /proc/acpi/ibm/brightness
>
> works fine but using the hotkeys has no effect. I now realized that xev
> doesn't return a keycode for FN+HOME and FN+END at all. FN only gives a
> keycode as well as HOME and END on its own do.
>
> However, i'm using Vanilla, so don't expect this to be an arch related
> problem. AFAIK things concerning brightness adjustment changed for
> 2.6.29 in the acpi/video branch.
>
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9e6dada9d255497127251c03aaa59296d186f959
>
> did anyone solve the problem?
>
> regards - Michael
>
>
> On 17.04.2009 04:13, Adam Stokes wrote:
> > So pressing the fn home/end for brightness alters :
> >
> > /proc/acpi/video/VID/LCD0/brightness
> >
> > doing an:
> >
> > echo '100' >/proc/acpi/video/VID/LCD0/brightness
> >
> > My .config for the kernel is set to:
> >
> > CONFIG_THINKPAD_ACPI_VIDEO=y
> > CONFIG_VIDEO_OUTPUT_CONTROL=m
> > CONFIG_ACPI_VIDEO=m
> >
> > lsmod shows:
> >
> > thinkpad_acpi          70316  0
> > rfkill                 11444  4 iwl3945,thinkpad_acpi
> > led_class               4344  3 iwl3945,sdhci,thinkpad_acpi
> > nvram                   7868  1 thinkpad_acpi
> >
> > dmesg shows:
> > thinkpad_acpi: ThinkPad ACPI Extras v0.22
> > thinkpad_acpi: http://ibm-acpi.sf.net/
> > thinkpad_acpi: ThinkPad BIOS 7LETA7WW (2.07 ), EC 7KHT24WW-1.08
> > thinkpad_acpi: Lenovo ThinkPad T61, model 6464Y1E
> > thinkpad_acpi: ACPI backlight control delay disabled
> > thinkpad_acpi: radio switch found; radios are enabled
> > thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness
> > control, supported by the ACPI video driver
> > thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
> > thinkpad_acpi: Standard ACPI backlight interface available, not
> > loading native one.
> >
> > kernel is 2.6.29-ARCH
> >
> > anyone know why the brightness still refuses to work?
> >
>



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