On Tue, 2007-01-02 at 00:32 -0800, Greg KH wrote: > On Mon, Jan 01, 2007 at 03:56:25PM -0500, Andrew Barr wrote: > > I have a simple question perhaps someone can help me with here... > > > > I have one of those simple LED keyboard lamps that get their power from > > the USB port. Is there some way in Linux, using files under /sys I would > > imagine, to cut power to the USB port into which this lamp is plugged? I > > know I would have to manually figure out what port it's plugged into, as > > it is not a "real" USB device...e.g. it just draws power. I would like > > to be able to programmatically switch the lamp on and off. > > Search the archives of the linux-usb-devel mailing list for a program > that might do this for you (depending on your hardware.)
What search terms should I use? Searching on "power" and "port power" at Gmane in the gmane.linux.usb.devel group doesn't readily give me anything. For the record, my hardware: 00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01) IBM Thinkpad R51 2883-ELU. Regards, Andrew > good luck, > > greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/