Looking for a PCI card with a USB2 controller because Unraid crashes weekly

Since a year my Unraid combo crashes weekly. The problem is always the same - a Unraid license USB stick is reset and the server is down immediately.

I tried different USB Devices, I tried different ports, I tried nearly all workarounds for syslinux.cfg I found in the internet, without success. The failing USB devices are the Unraid license sticks. If they are not accessible the server (the Unraid VM) is dead immediately. After theses crashes the USB sticks don't show any errors, they can be used again immediately:

Jul 9 03:18:40 Tower kernel: usb 1-5: reset high-speed USB device number 2 using xhci_hcd

Jul 9 03:18:46 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:19:02 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:19:02 Tower kernel: usb 1-5: reset high-speed USB device number 2 using xhci_hcd

Jul 9 03:19:07 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:19:23 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:19:23 Tower kernel: usb 1-5: reset high-speed USB device number 2 using xhci_hcd

Jul 9 03:19:29 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:19:44 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:19:44 Tower kernel: usb 1-5: reset high-speed USB device number 2 using xhci_hcd

Jul 9 03:19:50 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:20:05 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:20:05 Tower kernel: usb 1-5: USB disconnect, device number 2

Jul 9 03:20:05 Tower kernel: usb 1-5: new high-speed USB device number 8 using xhci_hcd

Jul 9 03:20:11 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:20:27 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:20:27 Tower kernel: usb 1-5: new high-speed USB device number 9 using xhci_hcd

Jul 9 03:20:32 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:20:48 Tower kernel: usb 1-5: device descriptor read/64, error -110

Jul 9 03:20:48 Tower kernel: usb usb1-port5: attempt power cycle

Jul 9 03:20:49 Tower kernel: usb 1-5: new high-speed USB device number 10 using xhci_hcd

Jul 9 03:20:54 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:21:09 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:21:09 Tower kernel: usb 1-5: new high-speed USB device number 11 using xhci_hcd

Jul 9 03:21:15 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:21:30 Tower kernel: usb 1-5: device descriptor read/8, error -110

Jul 9 03:21:30 Tower kernel: usb usb1-port5: unable to enumerate USB device

Now I found a new possible solution. This is my last and final idea before I drop my machine completely. So I'm looking for a way to a.) block xhci_hcd completely and use ehci_hcd on the machine as the only USB driver or b.) a PCI card with a USB2 controller:

https://bbs.archlinux.org/viewtopic.php?id=186617

Any help is highly appreciated.

The diagnostics is old but the hardware has not changed and the server is down currently. I will need several hours to bring the server up again (lots of dead Unassigned Devices SMB mounts that need minutes each to find out that the SMB server does not respond).

tower-diagnostics-20250115-1128.zip

Edited July 9, 2025Jul 9 by hawihoney