April 5, 20233 yr kernel version Linux bananapim2plus 5.15.93-sunxi #23.02.2 SMP Fri Feb 17 23:49:46 UTC 2023 armv7l GNU/Linux dmesg [ 1065.023248] udc-core: couldn't find an available UDC or it's busy [ 1065.023290] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 1193.665509] udc-core: couldn't find an available UDC or it's busy [ 1193.665534] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 2883.115015] udc-core: couldn't find an available UDC or it's busy [ 2883.115040] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 2908.077549] udc-core: couldn't find an available UDC or it's busy [ 2908.077574] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 2918.836034] udc-core: couldn't find an available UDC or it's busy [ 2918.836060] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 2941.725657] udc-core: couldn't find an available UDC or it's busy [ 2941.725681] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 2968.413688] udc-core: couldn't find an available UDC or it's busy [ 2968.413712] misc raw-gadget: fail, usb_gadget_probe_driver returned -16
April 5, 20233 yr Providing logs with armbianmonitor -u helps with troubleshooting and significantly raises chances that issue gets addressed.
April 5, 20233 yr Author thanks, but i don't known how to, when i run armbianmonitor -u, and run my process output this System diagnosis information will now be uploaded to https://paste.armbian.com/eworihosos Please post the URL in the forum where you've been asked for.
April 6, 20233 yr Author I found the question, kernel load g_serial module and the module make the udc device busy Edited April 6, 20233 yr by wuji1893
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