On Wed, 11 Nov 2015 18:53:56 -0500, Sam Varshavchik wrote: > May or may not be related, but I had a similar issue with Gnome and my > MP3 player after upgrading to F21, not F22. So, it is probably a > slightly different, but likely a related issue. > > Anyway, my MP3 player is a USB storage device, and after an upgrade to > F21 something in Gnome-land apparently got the bright idea that it's now > an MTP device. Hilarity ensued. > > I happened to have a netbook that wasn't beefy enough for Gnome, and I > had the XFCE spin running on it already. On a lark, I plugged in the MP3 > player, and it came up like nothing has ever happened. Fully functional. > I switched to XFCE on my main server, and suddenly it could talk to the > MP3 player again. > > I dutifully opened a bug, included syslog dumps, USB device IDs, etc… It > was all for nothing, the ticket had no activity after I created it, and > it's about to be closed together with all other unresolved F21 bugs. I > don't really care much for it, since all my desktops and laptops are > running XFCE now. > > So, try switching to XFCE. You may need to create a new user account, > though. Even after I had reconfigured my user account for XFCE, for > some reason it still had a bunch of Gnome stuff refusing to go away. Thanks. I tried both XFCE and Gnome, each with a scratch user. No change, neither desktop seems to notice a new device. Since the kernel isn't fully recognizing the camera (doesn't get the model number or the serial number) and mtp-probe rejects it, my guess is that the problem is before the desktop. Running the kio client command, as suggested in the bug report pointed out by Ian Malone, yields "Canon%20EOS%20100D@usb:004,011", which does seem to be getting the model number (100D) correctly, but doesn't seem to make the camera accessible to dolphin or anything else. Running kdeinit4 from a konsole and then trying camera:/ in Dolphin just gives the same "invalid protocol" message. (But the bug Ian cited was for KDE 4, so I'm not sure it applies in F23.) There's a check-ptp-camera script in /lib/udev (which comes from gphoto2). It's supposed to exit with code 0 if the device offers a PTP interface. When I run that and check the exit code, I'm getting 1. (I couldn't see who actually calls that in normal operation, but I figured I'd give it a try.) I can get pictures off the camera using a card reader, so this isn't urgent for me, but it's annoying and it seems that other people are having some related problems. There's bug 1249283 on this (filed against the kamera component, but maybe it should be something else?).
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