[edk2-devel] USB Enumeration Timeout on Warm Reset with XhciDxe in EDK2+SlimBootloader

["Hamit Can Karaca via groups.io" <hckaraca99=gmail.com@groups.io>]

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Hello,

On a cold boot, the USB stick enumerates normally. On a warm reset (UEFI Reset/Reboot) the same device hits a timeout during slot enable / address assignment. This is the log i get:
…
Enable Slot Successfully, The Slot ID = 0x2
Slot 2 address not assigned successfully. Status = Time out
Command Ring Control set Command Abort, SlotId: 2
Disable device slot 2!
XhcDisableSlotCmd: Disable Slot Command Failed, Status = Time out
XhcControlTransfer: error - Device Error, transfer - 100
UsbEnumerateNewDev: failed to set device address - Device Error
…

After that failure, a second warm reset succeeds, but the failure recurs on the next reset. On a cold shutdown + power-on, enumeration always works. Release and Debug builds show the same behavior. Removing certain USB sticks in the UEFI Boot Manager occasionally hangs the menu—requiring a full power-cycle.

I couldn't find any solutions, can you please help me?

Thanks.


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