Say I plug in several USB drives which don’t get automatically mounted. How can I find out which device file belongs to which physical device, so I can mount it for example?
First background. I am developing a driver for Logitech game-panel devices. It’s a keyboard with a screen on it. The driver is working nicely but by default the device is handled by HID. In order to prevent HID taking over the device before my driver, I can blacklist it in hid-core.c. This works but is not the best solution as I am working with several people and we all have to keep patching our HID module which is becoming a chore, especially as it often involves rebuilding initramfs and such.
For background I have just built a new machine with modern hardware including:
Using Arch Linux / XFCE, I frequently have problems with USB drives that are not properly mounted. Sometimes they automatically show up in Thunar and I can mount them with one click. However, at other times (it’s about fifty/fifty) the drive is just not recognized. I have had this problem with USB External Hard Drives, USB Memory Sticks, and cameras. If the external drive is not recognized, this is the situation:
I created a bootable usb from which I was going to install Arch. I did this the following way:
In that question someone wanted a blacklist for all USB devices, and then only allow specific devices.
I have two (and possibly in the future, more) USB serial devices which are identical (down to the serial number, unfortunately) – they’re actually BTC miners. Currently they end up as ttyUSBX where X is 0, 1 or 2, as there’s another unrelated USB serial device as well (which need not be worried about here).
Sometimes I unplug my usb drive only to find out files were not written to it.
I have a problem. After an update, my USB drives are not mounted automatically and I’m unable to mount them manually…
Is there a way to check how much power a USB device requires?