On Mon, Apr 13, 2009 at 8:27 AM, yakui_zhao <yakui.zhao@xxxxxxxxx> wrote: > On Sun, 2009-04-12 at 15:51 +0800, Andika Triwidada wrote: >> Hi all, >> >> I have a Lenovo 3000 G430 [1] which seems to work ok except for >> brightness control >> >> but from [2]: >> "... The ACPI and EC firmware are completely incompatible with >> ThinkPads, and ibm-acpi/thinkpad-acpi will not support it. The Lenovo >> 3000 are not ThinkPads." >> >> so, what do you suggest? create a new driver for Lenovo 3000 series? >> Can I use thinkpad_acpi.c as a start or should I start from scratch? Sorry for very late answer ... > Will you please check whether there exists the ACPI generic backlight > I/F under the /sys/class/backlight/acpi_video0/*? If exists, please > check whether the backlight can be controlled by using the sys ACPI I/f. > for example: echo 5 > /sys/class/backlight/*/brightness > (Of course you had better test it under the X environment. And you > should assure that the acpi video driver is loaded). $ lsmod|grep video uvcvideo 70024 0 compat_ioctl32 18304 1 uvcvideo videodev 46720 2 uvcvideo,compat_ioctl32 v4l1_compat 24580 2 uvcvideo,videodev video 29204 0 output 11776 1 video usbcore 175760 8 usb_storage,libusual,usbhid,uvcvideo,btusb,uhci_hcd,ehci_hcd /sys/class/backlight/acpi_video0/brightness exist, I can write and the value kept, but no effect on display brightness. > > Will you please attach the output of acpidump? attached, and also placed here: http://cecunguk.blankonlinux.or.id/~andika/lenovo-g430.acpidump Thanks Andika Triwidada
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