Android 8.0 update cannot mount to USB 3.0

[PGrey]

Weird, I was just dumping a bunch of stuff on my wife's 6P yesterday, using 3.0 (2 hubs deep, the PC hub/faceplate and a secondary), and it worked flawlessly.
I did have to choose PTP or File Transfer though, manually, whereas I'm pretty sure before it "trusted" my PC, after the first connection.
Edit: this could be a USB 3.0 driver issue, in particular if your chipset vendor or OEM did a poor job of adding feature or something, and are failing to properly forward metadata, or similar.

The "trust" thing is weird though, but I could see Google implementing that, it (mostly) makes sense, from a security perspective.
It's like like when you enable 3.5mm jack use while locked, it throws up a big "security warning", since it's a big, gaping security hole, at that point (not that most users even read the verbiage ;-] ).

 

[NathanPeters008]

The issue appears to be related to Android 8.0/8.1 always wanting to transfer in USB 3.1 mode using 128b/132b signalling. Therefore if your motherboard only has USB 3.0 ports that only support 8b/10b signalling, you will likely have issues, unless you use a USB 2.0 cable, which will downgrade the connection to USB 2.0 (even on a 3.0 port) and then you will be able to transfer files.

See this Google product forums thread for more information : https://productforums.google.com/fo...!msg/phone-by-google/EBTGfybo9cw/md48EI_RAgAJ

I've posted a YouTube video in that thread that demonstrates the different failure modes and combinations of USB 2.0/3.0 ports and USB 2.0/3.x cables in that thread to help others troubleshoot the issue also.

 

[progrockfan]

My desktop has an older mobo, and will not mount it in Windows or Linux. My laptop is newer, but only has USB 3.0, and it will mount it.

 

[vitruviusx]

I had been trying to connect my Note 8, all updated to latest, via an Anker usb3.1 cable, to my Windows 7 pc's usb 3.0 port, but could not see it despite trying developer options and driver updates. I then tried the Samsung cable shipped with phone, and I could then see my Note 8 via the usb 3.0 port. I believe the Samsung cable is also 3.1, but am not sure.