[LAU] Behringer X32 - glitch problems

[nik at parkellipsen.de]

Hmm, this is interesting, i just checked the USB ports in my Thinkpad T440s with lsusb -t.

Turns out, it has 3 buses, one USB3.0 (i suppose) and two 2.0 buses.

There's nothing on the 3.0 bus, but if i connect my interface, it still won't connect
to that bus because it's a 2.0 interface (testing with my UMC1820 at home, but I assume the X32 will be the same). 

Now, one hub seems to be there for the (rather useless) smart card reader exclusively, while 
ALL external (physical) ports are wired to the one bus that also has the memory card reader and other things 
attached. 

That means, not matter where i connect the interface, there's no way to connect to the least busy bus.

I wonder if there's a way to expose the unused buses ? Like, disconnect the smart card reader and attach 
an USB hub? Or, if i connect an external USB 3.0 hub, will it wire external devices to the 3.0 internal bus?

Anybody got experience here ?

Best,
Niklas

Thomas Ebeling wrote on 09.10.2019 23:53 (GMT +02:00):
> 
> 
> On 10/9/19 11:24 PM, Paul Davis wrote:
> 
>> 
>> On Wed, Oct 9, 2019 at 3:21 PM <nik at parkellipsen.de
>> <mailto:nik at parkellipsen.de> > wrote:
>> 
>>> The samplerate was 44100, period size 1024. Going up to 2048 made it
>>> worse.
>>> 
>>> Started with:
>>> 
>>> jackd -P98 -dalsa -dhw:2 -p1024 -n8 -r44100
>>> scsynth -u 57110 -z 256 -i 0 -o 8 -m 262144
>> 
>> 
>> try running at 48kHz with 3 periods and see if that helps.
>> 
>> 
> My X32 Rack runs flawlessly on arch using 48kHz, 1024 and 2 periods.
> Though I had to sort out USB issues first by running lsusb -t and find the
> least crowded bus.
> 
> Cheers
> 
> Bollie
>