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

[李业]

Hi,
On my thinkpad T400, by default I can set LCD brightness by
Fn+home/end shortcut, no need to manually set hotkeys. I have acpi
package installed.

On Fri, Apr 17, 2009 at 11:35 AM, Sergey Manucharian <sergeym at rmico.com> wrote:
> On Thu, 16 Apr 2009 22:13:15 -0400
> Adam Stokes <adam.stokes at gmail.com> 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?
>>
>
> Hi Adam,
>
> I'm using brightness control buttons every day with my ThinkPad
> R61. Both
>
>  echo '100' >/proc/acpi/video/VID/LCD0/brightness
>  echo 15 > /sys/class/backlight/acpi_video0/brightness
>
> work for me.
> "xev" shows the following:
>
>  keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp)
>  keycode 232 (keysym 0x1008ff03, XF86MonBrightnessDown)
>
> I've updated the system yesterday, but brightness control works fine
> for long time. I used to use custom scripts
> launched from /etc/acpi/handler.sh long time ago since the the regular
> buttons did not work properly.
>
> You may want to add:
>
>  keycode 233 = XF86MonBrightnessUp
>  keycode 232 = XF86MonBrightnessDown
>
> to your ~/.Xmodmap file (though I haven't, but check with "xev")
>
> Cheers,
> Sergey
>
>



-- 
Best regards,
Li Ye