Messages in this thread | | | Date | Thu, 15 Dec 2005 08:31:22 -0800 | From | Greg KH <> | Subject | Re: Repeated USB disconnect and reconnect with Wacom Intuos3 6x11 tablet |
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On Thu, Dec 15, 2005 at 03:42:54PM +0100, Denny Priebe wrote: > On Tue, Dec 13, 2005 at 11:38:32AM -0800, Greg KH wrote with possible deletions: > > Hello, > > > > These disconnects and reconnects disappear as soon as there's > > > a process reading either /dev/input/mouse0 or /dev/input/event5 > > > (mouse0 and event5 according to my setup). > > > Sounds like a hardware problem, the kernel can't cause a device to > > electronically disconnect itself like this. > > thanks for your reply, Greg. > > > I suggest plugging this into a different port, using a powered hub, or > > checking that the cable is still good. > > I tried what you have suggested. Unfortunately, this doesn't change > anything. > > What confuses me a bit is that theses USB disconnects do not appear > as soon as I read what the tablet provides. > > Could it be that the usb driver doesn't check for a connect status change > while there's a process reading /dev/input/{mouse,event}? so that I do not > see these disconnects while reading the tablet data?
No, it's an electronic signal happening on the USB hub, the hub notifies the kernel when a disconnect happens, it has nothing to do with the driver connected to the actual device.
So I really think that this is an electronic issue, sorry. Can you return this device and get a replacement one?
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