![]() ![]() If a device enumerates without any errors, but doesn't appear to do anything, then it is likely there are no drivers installed for it. There is always at least 1 hub in a model B: the ethernet chip is actually a 3-port hub and a USB ethernet device. If your device refuses to work when used with a multi-port hub, then use lsusb -t to display a "tree" of which devices physically connect to what. There is a limit to the number of cascaded hubs you can use with the Raspberry Pi. Be sure to check your USB device with an alternative source of power: if you continue to receive the same result, you can rule power out as a cause of the issue. Also, some hub power supplies advertise that they give out much more power than they actually can. You should use a good-quality powered hub when using these devices: some devices may advertise that they use lower power than they actually do, especially things like wireless LAN dongles and USB HDDs. The Raspberry Pi's USB ports cannot provide enough current for high-power 500mA devices. If there are errors with enumeration, then there are a few usual suspects: The first will print out all devices attached to USB, whether they are actually recognised or not, and the second will print out the kernel message buffer (which can be quite big after booting: try doing sudo dmesg -C then plug in your device and retype dmesg to see new messages). There are two commands that can be entered into a terminal for this: lsusb and dmesg. If a device doesn't work, then the first step is to see if it is detected at all. If you are using a different distro on the Pi, then you should check around the distro's website or guides to see how to update it. You should use sudo apt-get update & sudo apt-get upgrade to get the latest firmware and kernel that will contain many patches not present in the default installs of Raspbian. Work on the USB driver and kernel happens frequently. The rest of the steps come from this article and should be tried next. Raspbian and mount the system image on the SD card afterįormatting it, and seeing if the mouse will work with Raspbian vs If the issue still persists, my last resort would be to download.You should also grab one more wired basic mouse to connect to the USB.Work, you should try to plug the mouse into another computer to ![]()
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