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Linux/AM5718: USB disconnect error

Part Number: AM5718


Tool/software: Linux

1.HW:AM5718 REV1.3B ,  HDMI with 1440x900 monitor,  Logitech USB Optical Mouse inserted,8G tf card with prebuild image in SDK

2.SW:  ti-processor-sdk-linux-am57xx-evm-04.03.00.05-Linux-x86-Install.bin /  prebuild image 

3.steps:  boot the board,a single picture shows,kill the process "weston" of pid 959  before the final Matrix menu,wait,"USB disconnect, device number" msgs continously appear

4.logs:

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Arago Project http://arago-project.org am57xx-evm ttyS2

am57xx-evm login: root

[   28.655815] omap_hwmod: mmu1_dsp1: _wait_target_disable failed

[   28.728893] omap_hwmod: mmu0_dsp1: _wait_target_disable failed

root@am57xx-evm:~# ps -ef |grep "weston"

root       959   951  0 15:23 tty4     00:00:00 weston --idle-time=0

root      1039   959  0 15:23 tty4     00:00:00 /usr/libexec/weston-keyboard

root      1040   959  0 15:23 tty4     00:00:00 /usr/libexec/weston-desktop-shell

root      1076  1063  0 15:24 ttyS2    00:00:00 grep weston

root@am57xx-evm:~# kill -9 959

root@am57xx-evm:~# cd /opt/[  116.698658] usb 1-1: USB disconnect, device number 2

[  118.220962] usb 1-1: new low-speed USB device number 3 using xhci-hcd

02/input/input1

[  118.435125] hid-generic 0003:046D:C077.0002: input: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-xhci-hcd.1.auto-1/input0

[  178.594646] usb 1-1: USB disconnect, device number 3

[  180.110965] usb 1-1: new low-speed USB device number 4 using xhci-hcd

.......

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