On Mon, Jan 19, 2009 at 09:14:23AM +0100, Norbert Preining wrote: > Dear all, > > there is a regression from 2.6.28 to 2.6.29-rc, namely that the > backlight cannot be controlled anymore. > > Previously I was able to get a working backlight control with late > 2.6.28 kernels, not sure if I needed some patches posted by Mattia. You probably required and still require [sony-laptop] detect the ICH9 chipset as Type3 and [sony-laptop] call the extra enable function for SNC on Vaio Z at least. > Now, with 2.6.29-rc2 with and without these patches the backlight does > not work at all, no change. > > INterestingly changing the "values" in the sys-files does work (via > /sys/class/backlight/acpi_video0/brightness), either per hand or using > xbacklight. but there is no effect on the actual brightness. what were you using before? the acpi_video0 entry or the sony-laptop one? > And the sony_laptop sys entries have lost their brightness values. > > Is there a way to restore this behaviour? > > (Even better, get sony_laptop fixed completely?) > > Hardware: Vaio VGN-Z11 well, there as been no change to the sony-laptop driver from 2.6.28 to .29-rc2 except for moving it to drivers/platform/x86. -- mattia :wq! -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
