On Sun, 30 Aug 2009, Maciej Pilichowski wrote: > Hello, > > > You should start the traces before plugging in the camera, not just > > before trying to mount it. > > OK. I figured out that without plugging it it, I won't be able to find > out which port it is (usbmon documentation). So now I traced all USB > devices (0u). > > > Also, it helps to remove clutter from > > the traces by first unplugging all other USB devices, or as many as > > possible. > > In case of 10.3 I had to use pendrive because there was the system. > > opensuse 11.1 trace: > https://bugzilla.novell.com/attachment.cgi?id=315858 > > opensuse 10.3 trace: > https://bugzilla.novell.com/attachment.cgi?id=315859 Okay, this shows the source of the problem. In fact it's a combination of things: a bug in the camera and changes in udev and hal -- which explains why OpenSuSE 10.3 worked and 11.3 doesn't. The camera reports initially that it has 63424 sectors of storage (31.7 MB). Although old versions of udev and hal didn't do this, newer versions try reading the sectors near the end to check for a RAID signature. In your case, udev tried to read 8 sectors starting at sector 63408. Although this should have worked, it didn't -- the camera reported a Medium Error (unrecoverable read error) and then basically stopped working. Every attempted read after that got a Not Ready (medium not present) error; even reads for sectors nowhere near the end. Presumably the same thing would have happened with the older OS if it had tried to read sectors so close to the end. That's the reason the mount failed. You'd think by now Sony could use properly-designed USB interfaces for their cameras, but apparently they can't. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
