TzuWen_Chang

Hi, Here are a few ways to reduce radio frequency interference (RFI): 1. Disable USB 3.0. In your case, you can directly use a USB 2.0 port to connect the camera. 2. Improve signal shielding. Try adding metal shielding (grounded) between the Wi-Fi network card and the motherboard. 3. Switch to a USB Wi-Fi card and use a USB extension cable to move the USB Wi-Fi card away from the USB 3.0 port.

hello @sonyan11 For TB3 use the following commands Reset usb 2.0 hub: echo 1 > /sys/kernel/debug/usb/fd800000.usb/hub_reset Power off and power on usb 2.0 hub device: echo off > /sys/kernel/debug/usb/fd800000.usb/hub_vbus echo on > /sys/kernel/debug/usb/fd800000.usb/hub_vbus Power off and power on usb 3.0 hub device: echo off > /sys/kernel/debug/usb/fd000000.dwc3/hub_vbus echo on > /sys/kernel/debug/usb/fd000000.dwc3/hub_vbus

Hi Ken, You can use this patch file to update ch341.c to the newest version. This patch will be included in the next OS image release. @ken ch341.7z

Hi, Please check your devpath. You can use "dmesg" or "udevadm monitor" command to get more information. root@linaro-alip:/dev/input/by-id# udevadm monitor monitor will print the received events for: UDEV - the event which udev sends out after rule processing KERNEL - the kernel uevent [ 458.189823] usb 5-1.3: new low-speed USB device number 4 using xhci-hcd [ 458.298912] usb 5-1.3: New USB device found, idVendor=0461, idProduct=4e84 [ 458.305868] usb 5-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 458.313467] usb 5-1.3: Product: USB Optical Mouse [ 458.318335] usb 5-1.3: Manufacturer: PixArt [ 458.324909] usb 5-1.3: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes KERNEL[458.005759] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3 (usb) KERNEL[458.047247] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0 (usb) KERNEL[458.054557] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002 (hid) [ 458.383211] input: PixArt USB Optical Mouse as /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/input/input5 KERNEL[458.063876] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/input/input5 (input) KERNEL[458.090385] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/input/input5/event3 (input) [ 458.453946] hid-generic 0003:0461:4E84.0002: input,hidraw0: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-xhci-hcd.11.auto-1.3/input0 KERNEL[458.134852] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/hidraw/hidraw0 (hidraw) UDEV [458.165723] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3 (usb) UDEV [458.190489] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0 (usb) UDEV [458.202123] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002 (hid) UDEV [458.215344] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/hidraw/hidraw0 (hidraw) UDEV [458.223512] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/input/input5 (input) UDEV [458.298266] add /devices/platform/usb1/fe900000.dwc3/xhci-hcd.11.auto/usb5/5-1/5-1.3/5-1.3:1.0/0003:0461:4E84.0002/input/input5/event3 (input) root@linaro-alip:/dev/input# ls by-id by-path event0 event1 event2 event3

Hi gc986, If you want do the following command on boot. You can modify init.usb.configfs.rc by "remount" Then reboot to check property has been set.