Hi guys I own a Fujitsu S7020 laptop, and I have noted in the past that Linux was not able to control the LCD brightness via the standard ACPI-video/backlight system. Ordinarily this wouldn't matter except that when coming out of suspend-to-ram the screen lamp doesn't turn on. One can manually trigger it using the keyboard keys, but that's a bit clunky. Just recently I stumbled across a kernel module written several years ago which allowed software control of (among other things) the LCD brightness on Fujitsu laptops. I grabbed a copy from http://tilos.csl.mech.ntua.gr/~apoikos/fujitsu-acpi-2.6.tar.bz2 and tested it against 2.6.22.1 and the brightness control worked as advertised. A note on http://tilos.csl.mech.ntua.gr/~apoikos/s7020.html says that "This patch never made it to the mainline kernel source" but it's unclear to me whether it was ever considered. In any case, beyond the obvious integration work what would it take to get this module into the acpi system? I would certainly be willing to do the legwork if any was necessary. We already have toshiba_acpi and ibm_acpi, so it seems to me that it's quite reasonable to add fujitsu_acpi. However, if this is truly unnecessary and there is a way of manipulating this corner of my laptop's APCI system with a stock kernel I'm all ears. Regards jonathan - 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
