Hi Lately, like since about half year or so (I'm using USB3 since before it worked reliably (or at all) nearly 3 years ago), it happens more and more often that a SS-device is "only" recognised as a High-Speed device, AFAICR it happens more often when i disconnect one HDD and plug in another immediatly (a few seconds appart, they are lying one ontop the other so switching the cable doesn't take long). And sometimes after i switch a HDD with another it isn't recognized at all as "new device plugged in". I haven't tried how "old" the system thinks the device is, the wrong udev-symlinks are enough to stop me in my tracks. Re-Plugging has always worked in this case. (Unplug, wait 5 seconds, re-plug and eh voila the right udev-symlinks are there) So my first question is: Is there a way to force a renegotiation, without powering down the device? I tried physical re-plugging a few times, but that didn't work. Some goes for the case when the device isn't recognizes as new, can i force a rediscovery, so to speak? Second question: What can i do to try debug this? Today i copied files to 3 pairs of HDDs. All 3 pairs were connected by the same 2 cables connected to the 2 ports of an Intel xHCI (Z77 Chipset Mainboard) - The first pair got recognised as both SS. - The second pair got recognised as one SS and one HS. (Here i switched cables. Re-plugging after i saw that one was HS didn't work.) - The third pair got recognised as both SS. (Here i had switched off the other HDDs and there were a few minutes inbetween switching the old pair of and swiching the new pair on) The second problem didn't show up today. -- Matthias -- 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
