Am 23.05.20 um 22:33 schrieb Alan Stern:
>>>> I'm trying to get external HDDs from Sony to work under Linux with USB 3.0.
>> [...]
>>>> - PSZ-HA2T: idVendor=054c, idProduct=087d
>>>> - PSZ-HA1T: idVendor=054c, idProduct=087d
>>>> - PSZ-HA50: idVendor=054c, idProduct=087d
>>>> - PSZ-HC1T: idVendor=054c, idProduct=0c4f
[...]
>> Because with setting the f flag (via options usb-storage quirks=054c:087d:f) the
>> PSZ-HA*1*T starts behaving nicely.
[...]
>> The PSZ-HA*2*T, however, still doesn't work with that.
[...]
> That device seems to be behaving so badly, it's hard to tell what the
> underlying problem is.
>
> I'd start by blacklisting the device for UAS, so forcing it to use
> usb-storage, which is a somewhat simpler protocol. Next, you should
> collect a usbmon trace showing what happens when you plug in the
> PSZ-HA2T. That will tell us what's going on, even if it doesn't suggest
> a way to work around the problems.
>
> (The instructions for usbmon are in the kernel source file
> Documentation/usb/usbmon.rst.)
Thanks. Will give that a shot.
Is there any way to differentiate between devices other than vendor and product ID?
Because the PSZ-HA1T (which seems to be working thanks to your help) and the PSZ-HA2T
(which still refuses to work) have the *same* vendor and product ID.
Regards -- Till
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