On Tue, Mar 13, 2012 at 08:09:52AM -0400, Pradeep Subrahmanion wrote: > Before taking this approach , I had a look at the WMI interface.But I found from acer-acpi site that , the 4730 series > is using new WMI interface which needs to be reverse engineered. > As far as acpi interface is concerned , by default it is not at all causing any change in brightness. > When 'acpi_osi=Linux' was added to the boot grub config , the brightness control with hot key started to work . > But it was not changing to correct values. Increasing brightness after maximum level gives blank screen. That page was last updated in 2009. Have you tried the current acer-wmi code? You'd probably need to pass backlight=vendor if there's a non-working ACPI interface. When you say the ACPI interface doesn't work, what do you mean? Have you tried using the /sys/class/backlight interface directly? -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
