Re: RES: TP-LINK USB no carrier after speed test

From: Alexander Motin <>
Date: Mon, 26 Sep 2022 19:28:52 UTC

On 26.09.2022 13:11, Ivan Quitschal wrote:
> bad news im afraid, problem occurred at the first attempt on
> and I'm really trying to help you analizying this code here myself, but 
> problem is: im far from expert on network protocol business. if it is a 
> network problem at all. seems to me more like a USB protocol limit issue 
> or something ..  just FYI , limiting that first constant to 2048 still 
> limits my  upload to 90mbps , and also still solves the issue .. there 
> has to be something about it obviously

On my tests I found that reduction of URE_MAX_TX from 4 to 1 actually 
help a lot more without so dramatic performance decrease.  Though it is 
likely only a workaround and does not explain the cause, so I hope Hans 
more ideas for us to test. ;)

Alexander Motin