After updating Arch today I found I could no longer mount usb storage devices – usb sticks. The log shows the device coming up, but then messages from MTP saying: <\/p>\n\n\n\n
mtp-probe: bus: 2, device: 5 was not an MTP device<\/pre>\n\n\n\nI have seen this before. It is irritating, I am doing something else, my head full of whatever it is, and suddenly usb sticks won’t mount. <\/p>\n\n\n\n\n\n\n\n
Did some reading, some people reported that old udev rules for the libmtp library could be a problem. Libmtp is about the Media Transfer Protocol, which I believe to be involved with automatically recognizing when you plug in your phone that maybe you want to transfer stuff from it (pictures). I’m not sure. I don’t do it. <\/p>\n\n\n\n
I removed from \/lib\/udev\/rules.d the 69-libmtp.rules and squirreled them away somewhere I am sure I will forget, and rebooted, and now once again I can recognize usb devices. <\/p>\n\n\n\n
When I do the pacman updates, sometimes it claims I have local changes to config files which I don’t remember changing. It is vaguely possible that today when I did the pacman update, that it mentioned finding libmtp rules and asked if I wanted to replace them or keep them. I don’t remember doing that, at all, nor do I ever remember modifying the libmtp rules. Doesn’t mean I never did. And my practice, usually, when pacman asks is to leave in place any config that I already have there, so I would have answered to leave it in place. <\/p>\n\n\n\n
So it could be my fault. <\/p>\n\n\n\n
But at least now I know what to do. <\/p>\n","protected":false},"excerpt":{"rendered":"
After updating Arch today I found I could no longer mount usb storage devices – usb sticks. The log shows the device coming up, but then messages from MTP saying: mtp-probe: bus: 2, device: 5 was not an MTP device I have seen this before. It is irritating, I am doing something else, my head … Continue reading libmtp udev rules<\/span>