USB problems with a BENQ Touchscreen Display TL550
This thing is driving me mad...
The USB cable (for the interaction) is moulded into the back of the display and isn't particulary very long and not long enough to reach the desired PC. Every sort of USB extension I put on it seems to cause problems and it can be very intermittant so I never know if I've fixed it. If I put a standard USB ext on it, the display seems to reset the mouse to a lower middle position on the display every 30 seconds or so if you are using the mouse on the PC. If I put an active USB ext on it, the interaction is fine but it causes flickering on the screen. I've tried a laptop (as a test) on an usb extension and I get the same result. On one occasion I thought i'd fixed it. I moved the USB cable from the back of the PC to one of the front ports and it started behaving. I then moved it back and forth and it was switching between working and not working. I left it at that, problem solved, but now a month on and it's back to not working again either on the front or the back USB ports. I have been in contact with support but they are not giving me the impression they know what is wrong either. It does seem like power running through the usb is the issue, whether it is too little or too much I don't know. I have another display (same model) on another site, where I went through a similar procedure, but that is now working (on a standard usb ext) for some reason and I don't want to upset it at the moment.
Anyone have any experience with these or have any ideas I haven't tried?