Down clock USB 3.1 to 5 Gbit/s

possiblylinux127, 5 months ago

Sounds like chicken and the egg problem. Speeds are based on what the device supports.

giacomo, 5 months ago

Maybe with udev rules? ATTRS{speed} maybe? Lol idk, I’ve never tried to downclock USB speeds.

pizza_the_hutt, 5 months ago

Why?

infinitevalence, 5 months ago

I have a USB extender that wont run at any other speed, but its much faster than 2.0 so I would really like to get it working consistently.

cmnybo, 5 months ago

Have you tried using it with a hub that only supports 5gbps?

infinitevalence, 5 months ago

https://discuss.online/pictrs/image/707a5291-eb3e-4feb-a28f-51e1f3accc1b.png

Not sure what you are suggesting… The issue im trying to fix is that this extender only passes 5Gbit/s so if I plug in something that can negotiate up to 10 or lower it will try to configure the lanes that way and the extender will fail.

The only device I have managed to get working is a USB WD Elements HD. Everything else I have tried that should support 3.0 never connects.

So I wanted to test to see if I could lock the port at 5Gbit/s to eliminate auto negotiation from my trouble shooting.

cmnybo, 5 months ago

Connect a 5gbps USB hub to your computer. Now you have a USB port that is limited to 5gbps to connect your extender to.

infinitevalence, 5 months ago

ahh makes sense, I will see if I can find one!

possiblylinux127, 5 months ago

The hub is malfunctioning then. USB devices register themselves and there capabilities on the bus.