On Thursday 11 January 2007 9:21 pm, Jon Smirl wrote: > So why does the device work when plugged into a powered hub? Do the > ports on the powered hub not do suspend/resume?
All USB hubs (root and otherwise) are supposed to support suspend/resume, and you'd probably observe they're using it during enumeration in any case. I'd guess the issue is in some _other_ aspect of how the root hub differs from an external hub. If you use recent versions of "lsusb -v" output, you will see that the hub descriptors show different behaviors. > This device is a desktop USB audio device and was not designed for > portable use. It could be that Philips just never implemented/tested > suspend/resume on it. > > Is there a way to force USB suspend/resume under Windows as a comparison? You can download the USBCV testing tool from www.usb.org and run those "chapter 9 tests". AFAICT that's all the only reason anyone would ever have for running MS-Windows. :) - Dave ------------------------------------------------------------------------- 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 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
