Hans Petter Selasky <> changed:

           What    |Removed                     |Added
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--- Comment #1 from Hans Petter Selasky <> ---

Can you set the LIBUSB_DEBUG environment before running the USB application?

env LIBUSB_DEBUG=0 program > log0.txt
env LIBUSB_DEBUG=1 program > log1.txt
env LIBUSB_DEBUG=2 program > log2.txt

And reproduce the issue?

libusb_handle_events_completed() only returns when the *completed variable is
set to non-zero, typically when the USB transfer callbacks receive a CANCELLED
error code. Maybe the pcscd APP doesn't check for this error code?


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