grv2025 0 Posted January 15 (edited) We use Tinkerboard 2S as a USB-HID device (On-The-Go). To use this function, TinkerBoard's USB-TypeC must be connected to a PC via USB. When we turn on TinkerBoard2S in this state, it does not Normal Boot and Tinkerboard does not start. Once the USB cable is removed, Normal Boot will occur and Tinkerboard will start. How can I Normal Boot when I turn on the Tinkerboard with the USB-TypeC cable connected to the PC? Best regards, Edited January 15 by grv2025 Share this post Link to post Share on other sites
tooz 52 Posted January 16 hello @grv2025, i've tried using debian 11 beta v.3.0.13 to reproduce the issue: tinker board 2s (boot from sd card) connected to an usb mouse, an usb keyboard, and type c port connected to a pc result: tinker board 2s starts up and the desktop appears within a few seconds. on my windows pc: tinker board 2s is recognised as rk33xx device https://i.imgur.com/XMyCMLZ.mp4 what's the os version you're using? is there any other peripherals connected to tinker board 2s? what's your setup? Share this post Link to post Share on other sites
tooz 52 Posted January 16 hello @grv2025, to avoid entering ums mode on boot, please modify /boot/config.txt, in line 25, change conf:auto_ums=on to conf:auto_ums=off sudo vi /boot/config.txt conf:auto_ums=off save and reboot Share this post Link to post Share on other sites
grv2025 0 Posted January 16 Dear tooz-san Thank you for your advice! I confirmed that by setting "conf:auto_ums=off" it is possible to start up with the USB-TypeC cable connected. Best regards, grv2025 Share this post Link to post Share on other sites
