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Down clock USB 3.1 to 5 Gbit/s (discuss.online)
submitted 9 months ago by infinitevalence@discuss.online to c/linux@lemmy.ml
9 comments fedilink hide all child comments

Hey there fellow neck-beards and grey-beards!

I have a motherboard with USB3.1 and I need to down clock it so its always 5 Gbit/s and never faster.

Is there any way to do this, my DuckDuckGo Fu is not finding the right combination of words.

I use Arch BTW...

Just kidding im still running Manjaro.

Thanks.

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[-] pizza_the_hutt@sh.itjust.works 13 points 9 months ago

Why?

[-] infinitevalence@discuss.online 10 points 9 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.

[-] possiblylinux127@lemmy.zip 6 points 9 months ago

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

[-] cmnybo@discuss.tchncs.de 4 points 9 months ago

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

[-] infinitevalence@discuss.online 2 points 9 months ago

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@discuss.tchncs.de 8 points 9 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@discuss.online 2 points 9 months ago

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

[-] possiblylinux127@lemmy.zip 2 points 9 months ago

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

[-] giacomo@lemm.ee 1 points 9 months ago

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

this post was submitted on 30 Jan 2024
23 points (87.1% liked)

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