[Bug 207887] USB keyboard (and other devices) connected to Thinkpad Dock hangs after a while

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=207887

jcchen (jonathan.chen@alumni.purdue.edu) changed:

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--- Comment #10 from jcchen (jonathan.chen@alumni.purdue.edu) ---
I also have this issue- TEX Shinobi connected through a USB3 hub to a Thinkpad
X13 AMD Gen 1 (Fedora 33, kernel 5.11.11 but have experienced this back to at
least 5.9).  Previously, I had thought a USB Dock to also be at fault, but the
issue also occurs with a usb 4-port hub.  

The last dmesg before the keyboard stops responding is a usb device reset:
  usb 6-2.4: reset full-speed USB device number 11 using xhci_hcd

In my case, it also causes udisksd to block on IO which ultimately prevents a
clean shutdown.  I'm also interested in helping debug the issue but would need
some guidance.

Here are the things I'm going to try:
Per Alan's suggestion in #8, enabling Mass Storage mode (DIP 6 = on, per the
manual [https://tex.com.tw/pages/user-manual]).  This shows a 448KB disk (as
apposed to 'no media') and the keyboard continues to work.
Move other devices to a different USB hub (just keyboard -> hub -> computer)
Directly connect keyboard (expect the issue to not occur)

Thanks and best regards,
Jonathan

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