USB Touchscreen kills xHCI Controller about linux

[6by9]

ads7846 is totally unrelated as it is an I2C touchscreen. Should already be fixed via #6029.

[pelwell]

1. Which power supply are you using on the Pi?
2. What devices are attached to it?
3. Are any of those devices independently powered?

[s-dinda]

I'm using the official 27W Power Supply

The other devices are a printer, a DSLR and a mouse:

$ lsusb -tv
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Printer, Driver=, 480M
        ID 06d3:3b36 Mitsubishi Electric Corp. CP-D80DW
    |__ Port 2: Dev 3, If 0, Class=Imaging, Driver=, 480M
        ID 04a9:32b4 Canon, Inc. EOS Rebel T6
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        ID 046a:b091 CHERRY Mouse

The touchscreen and all of them (except the mouse) are independently powered.

[x130844]

Same problem here, with the Canakit 45W usb-c PD power supply.
the usb sees mtouch, then destroys the all USBs.
Another touch driver (I have a 2nd screen) using the elecrow. ads7846. has issues as well, it sees SOME touch inputs, once every 20 seconds or so.
If I set the exact same OS (raspbian) with same settings, same literal displays on the rpi4 everything works as expected.
I have no idea what's happening.

[x130844]

ads7846 is totally unrelated as it is an I2C touchscreen. Should already be fixed via #6029.

I can confirm that the ads7846 display works now, thx!
Sadly the USB one still is not (mtouch one)