On 2009-09-21 01:27 +0800, Alan Stern indited: > On Sun, 20 Sep 2009, Eric Ding wrote: > >>> What about hald-probe-volume? Doesn't that still cause problems? >> Hey, good question! :) It doesn't seem to, which did make me wonder what >> was going on as well. I was just going to accept that it now works without >> any further questions, but for the sake of scientific inquiry, I've tried a >> couple experiments: (1) turn off vol_id's executable bit again to confirm >> that hald-probe-volume by itself causes problems, (2) turn off the executable >> bit on hald-probe-volume to isolate what vol_id is doing, and (3) turn on the >> executable bit for both and let things "work." I've logged usbmon output for >> all three scenarios and included them below. What can you make of these? > > I'd guess that the card has some bad sectors near (but not at) the end. > When asked to read them it fails and from then on, no reads will work. > Whether these continuing failures are the fault of the card or the > reader, I can't say. Well, whatever the case may be, your hint that vol_id might be tickling the issue was key to my finding a workaround. Thanks a bunch! If I get hold of another card reader or xD card at some point, I'll have a chance to test your theory. :) Eric -- 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
