Re: bmAttribute NO_REMOTE_WAKEUP
Alan Stern <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Sat, 17 Mar 2007, Jon Smirl wrote: > I just noticed that the PSC805 USB sound device has NO_REMOTE_WAKEUP > set it it's configuration bits. Most of my other devices allow > REMOTE_WAKEUP. > > Does this have anything to do with why the device won't come back from > a suspend? No, or at least, not directly. They might both be symptoms of the same design error. The REMOTE_WAKEUP attribute means that the device is capable of sending a signal to the computer while it is suspended, asking to be resumed because an event of some kind has occurred. It would be the appropriate way to report that someone had pressed one of the switches while the device was suspended, but apparently the PSC805 doesn't support it. > Two devices I have that also have NO_REMOTE_WAKEUP are both Wifi > adapters. Wifi has it's own power saving scheme that allows it to poll > for activity without being fully powered. What use is polling for activity if the devices have no way to report the activity to the computer? Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel