On Fri, Dec 07, 2007 at 11:41:24PM +0100, Piotr Roszatycki wrote: > USB devices connected to external hub for USB 2.0 doesn't work > correctly if one of these devices utilises bandwith. > > It is a problem for USB audio devices. If such device is working, no > more devices can work, i.e. another USB audio or camera. The dmesg > output is: > > cannot submit datapipe for urb 1, error -28: not enough bandwidth > > The solution is to use improved Transaction Translator scheduling > (CONFIG_USB_EHCI_TT_NEWSCHED). > > I've tested CONFIG_USB_EHCI_TT_NEWSCHED with the latest Sid kernel and > it works correctly.
seen on fedora too. set in trunk for upcoming 2.6.24 http://wiki.debian.org/DebianKernel thanks for feedback. -- maks -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
