Ubuntu
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  1. Bug #1910928
  2. Comment #40

Comment 40 for bug 1910928

Revision history for this message
You-Sheng Yang (vicamo) wrote : Re: Bluetooth (Intel AX201 / AX1650i) won't go live after suspend Lenovo Thinkbook 14 IIL

[ 9.102388] usb 3-10: new full-speed USB device number 6 using xhci_hcd
[ 9.252438] usb 3-10: New USB device found, idVendor=8087, idProduct=0026, bcdDevice= 0.02
[ 9.252442] usb 3-10: New USB device strings: Mfr=0, Product=0, SerialNumber=0
...
[ 77.844238] usb 3-10: USB disconnect, device number 6

It seems for some reason your usb device is dropped and didn't re-appear in `lsusb -t` in comment #27.

Please append following kernel boot parameters, reboot and attach output of `journalctl -b`:

  dyndbg="file drivers/bluetooth/* +plft" dyndbg="file drivers/acpi/power.c +plft" log_buf_len=32M ignore_loglevel initcall_debug

For detailed steps, please see https://wiki.ubuntu.com/Kernel/KernelBootParameters#Temporarily_Add_a_Kernel_Boot_Parameter_for_Testing .