On 12/22/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > On 12/22/06, Jon Smirl <[EMAIL PROTECTED]> wrote: > > Hub is a Dlink DUB-H7, it is current, shipping product from Dlink. > > http://www.dlink.com/products/?sec=0&pid=149 > > yes, single-TT. > > > This fails even when I am not typing and using the mouse. > > Any device on the USB periodic schedule is always holding a full > reservation for its worst-case bandwidth usage requirements even when > it's idle and doing nothing. > > > that while I unplug the device and plug it back in. The LIRC device is > > the only thing active on the hub when it fails. > > According to the log you showed me, there were three other FS/LS > endpoints already active when the LIRC budgeting attempt failed...
They were plugged in, but the devices were idle. That appears to the the problem that the devices hold their reservations even when not using them. I think I had a webcam, USB audio and the keyboard plugged in. I might have had two webcams plugged in. So if I boot Windows this hub should fail too, right? I googled for problem reports and didn't see any on this issue, there are complaints about the amount of power available. One person reported using 5 low speed (didn't say how low) and two high speed devices. I did find a complaint from a Mac user: Cons: Device has insufficient power to run some thumb drives, even with the 5v included power supply. Device has erratic operation, sometimes completely dropping a mouse or keyboard (when only a mouse and keyboard is plugged in). Keyboards occasionally repeat or drop keystrikes when sent through this device. Mice sometimes jerk when sent through this device. Wacom tablets exhibit equivalent problems. This device has been used on 3 different Macs and 2 different PCs with consistently poor results. Purchased approximately a year ago (December '06). The other USB hub we have (different brand) has none of these issues when used on the same systems. A Windows user has: Mouse, keyboard, webcam, IDE2USB drive, video capture, sound card. And everything works. Gave it 5 stars. So there must be some solution to the scheduling problem that MS has figured out. If it wasn't solvable there'd be a thousand complaints out there. Looks like Mac hasn't figured it out either. > Monty > -- Jon Smirl [EMAIL PROTECTED] ------------------------------------------------------------------------- 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
