IRQ affinity on PC Debian Bookworm

I just found a Core i5 HP Compaq Pro 4300 I5-3470S CPU @ 2.9GHz 4 cores that provides good latency. But, I am having trouble with my USB Pendant disconnecting. Would playing with the IRQ to core assignment help with this?

 

 

Probably not.
Try using USB2.0 or the black colored ones, not the blue ones.
A lot of cheap USB2.0 devices will have issues with USB3.0 and 3.1 ports, some USB3.0 sticks will switch back to 2.0 as soon as you start to copy something to/from.

I'll give that a try.

Thanks

All of the USB ports on this machine are black. I tried moving devices around and it seems to be better but not completely OK. I have a wireless keyboard/mouse dongle, Touch-screen connection, Vista P4-SE pendant, and a USB to Ethernet adapter. This PC had been sitting for a couple of years so I am going to exercise all of the connectors really well just in case they are dirty.

Do you have a really old USB HUB?
I still keep one of those around for this reason, sometimes stuff just does not work as it is supposed to.

I don't, but I ordered a Intel NIC expansion card so I can get the USB to NIC adapter off of the USB. I use the existing on-board NIC for the MESA connection. I am also getting a pair of memory stick so it can run in dual channel mode. Right now, there is just one 4GB stick in the machine.

Last night I started it up and homed the machine and then just left it sit. Later when I went down to check the pendant was disconnected. To get it to reconnect I have to exit LCNC, Unplug and replug the pendant and then start LCNC. When LCNC starts it must start a communication session that doesn't get started when plugging the pendant in. You would think that temporarily pulling the pendant USB plug would reset it, but it doesn't. Might be interesting to put a scope on that.