Re: possible regression in usb-storage?

[Johann Klammer <klammerj@a1.net>]

On 9/26/26 4:46 PM, Alan Stern wrote:
> 
> Don't know what you mean by that question.  If you're referring to
> the packet size for endpoint 0 and the device is running at High Speed
> (USB 2, 480 Mb/s) or below, the answer is No.  SuperSpeed (USB 3, 5000
> Mb/s or above) has a maximum packet size for endpoint 0 of 512 bytes.
> But transfers can contain multiple packets.
> 
> At this point I don't see any reasonable explanation for the difference
> in behavior you're observing.  My best recommendation is that you try a
> bunch of different kernel versions between 4.9 and 6.9 to pin down
> exactly at what stage things stopped working.  A git bisection could
> then zero in on the exact commit responsible for the change.
> 
> Alan Stern
> 

It seems that my power supply is unstable. I had a dvb stick and another 
hdd(selfpowered) plugged in, and with both disconnected the drive comes 
up ok with and without the quirks(except for a cache consistency message 
when unplugging). Plugging in the second hdd with the seagate mounted 
gives me `critical target errors`in dmesg. Plugging in just the dvb 
stick with seagate mounted gives no disk errors but unplugging and 
replugging the drive it won't come up.

Sorry..