Re: [opensuse-kernel] Thinkpad Brightness Control

On Friday 14 August 2009 15:46:04 Anshul Jain wrote:

On Fri, Aug 14, 2009 at 6:44 PM, Thomas Renninger wrote:

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On Friday 14 August 2009 03:46:30 Anshul Jain wrote:

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Hi, I have a backport 2.6.27.x custom kernel installed on my 11.0 system, running KDE 4.3. I've noticed that the Thinkpad (mine's R61/R61i) brightness control does not work through the keypad. I can change it through the Powerdevil battery manager. I have the right options put in for brightness control in /etc/modprobe.d/thinkpad_acpi. The dmesg output for thinkpad_acpi is :-

thinkpad_acpi: ThinkPad ACPI Extras v0.21 thinkpad_acpi: http://ibm-acpi.sf.net/ thinkpad_acpi: ThinkPad BIOS 7OET24WW (1.03 ), EC 7KHT22WW-1.06 thinkpad_acpi: Lenovo ThinkPad R61/R61i, model 8937A13 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... Does acpi_backlight=vendor boot param help? This should change these lines in thinkpad_acpi output and let the thinkpad driver try to handle brightness instead of video.ko.

   Thomas Thomas, I'll have to append these lines to grub, at the bootloader...am I right? Yes or add it (once) at the graphical boot loader stage when booting.

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