https://community.nxp.com/t5/i-MX-Processors/start-kernel/m-p/1362959#M182244 <P>I currently have two base boards, one of them is working, we call it board A for the sake of description, and the other one is under debugging, we call it board B. Now I burned the kernel into IMX6U normally on board A, and it also boots normally.But when I put the IMX6U in the B board, it keeps printing the following message and can't enter the system, can you tell me what causes it?</P><P>[ 4.973429] ERROR: v4l2 capture: slave not found!<BR />[ 4.978200] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 17.564390] usb 1-1: new high-speed USB device number 4 using ci_hdrc<BR />[ 17.570923] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 28.034347] usb 1-1: device not accepting address 4, error -110<BR />[ 28.040359] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 28.164347] usb 1-1: new high-speed USB device number 5 using ci_hdrc<BR />[ 28.170869] imx-uart 2020000.serial: Rx FIFO overrun</P> Thu, 28 Oct 2021 05:31:14 GMT Brilliant 2021-10-28T05:31:14Z https://community.nxp.com/t5/i-MX-Processors/start-kernel/m-p/1362959#M182244 <P>I currently have two base boards, one of them is working, we call it board A for the sake of description, and the other one is under debugging, we call it board B. Now I burned the kernel into IMX6U normally on board A, and it also boots normally.But when I put the IMX6U in the B board, it keeps printing the following message and can't enter the system, can you tell me what causes it?</P><P>[ 4.973429] ERROR: v4l2 capture: slave not found!<BR />[ 4.978200] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 17.564390] usb 1-1: new high-speed USB device number 4 using ci_hdrc<BR />[ 17.570923] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 28.034347] usb 1-1: device not accepting address 4, error -110<BR />[ 28.040359] imx-uart 2020000.serial: Rx FIFO overrun<BR />[ 28.164347] usb 1-1: new high-speed USB device number 5 using ci_hdrc<BR />[ 28.170869] imx-uart 2020000.serial: Rx FIFO overrun</P> Thu, 28 Oct 2021 05:31:14 GMT https://community.nxp.com/t5/i-MX-Processors/start-kernel/m-p/1362959#M182244 Brilliant 2021-10-28T05:31:14Z