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beaglebone black sdk-am335x-evm-06.00.00.00 网口不通

kun han
Prodigy 202 points

beaglebone black板卡，ti-sdk-am335x-evm-06.00.00.00-Linux-x86-Install.bin

编译内核时按默认配置，网口正常。

编译内核时选中Kernel Features -->Preemption Model(Preemptible Kernel(Low-Latency Desktop)),网口不通Sending discover... 
No lease, failing 提示如下：

Configuring network interfaces... /usr/sbin/alsactl: load_state:1686: No soundc.
[ 5.452758] net eth0: CPSW phy found : id is : 0x7c0f1
udhcpc (v1.20.2) started
Sending discover...
[ 8.452972] PHY: 0:00 - Link is Up - 100/Full
Sending discover...
Sending discover...
No lease, failing
done.
INIT: Entering runlevel: 5
Starting system message bus: dbus.
Starting telnet daemon.
Starting syslogd/klogd: done
Starting thttpd.
Stopping Bootlog daemon: bootlogd.

这种问题如何解决？谢谢

  • 0
    TI__Mastermind 45260 points

    为什么要加这个选项，是想增加内核实时性么？

  • 0 回复 Jian Zhou
    Prodigy 202 points

    是想增加内核实时性

  • 0 回复 kun han
    TI__Mastermind 45260 points

    在sdk06上，我们并没有加入RT preemt的功能，而且如果要是加入这个功能，也不是只修改那一个配置那么简单。

    你可以网上搜搜3.2内核打RT preemt的说明文档。

  • 0 回复 Jian Zhou
    Prodigy 202 points

    修改/etc/network/interfaces文件 添加udhcpc_opts -R -b

    auto eth0
    iface eth0 inet dhcp
        pre-up /bin/grep -v -e "ip=[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+" /proc/cmdline > /dev/null
     +   udhcpc_opts -R -b

    同时修改/etc/init.d/networking
    echo -n "Configuring network interfaces... "
    +ifup -a
    +ifdown -a
    ifup -a
    echo "done."

    能获得IP了，只是显示两次udhcpc (v1.20.2) started 

    Configuring network interfaces... /usr/sbin/alsactl: load_state:1686: No soundca.
    [ 5.532348] net eth0: CPSW phy found : id is : 0x7c0f1
    udhcpc (v1.20.2) started
    Sending discover...
    [ 8.523071] PHY: 0:00 - Link is Up - 100/Full
    Sending discover...
    Sending discover...
    No lease, forking to background
    [ 15.096038] net eth0: CPSW phy found : id is : 0x7c0f1
    udhcpc (v1.20.2) started
    Sending discover...
    [ 17.093200] PHY: 0:00 - Link is Up - 100/Full
    Sending discover...
    Sending select for 192.168.4.51...
    Lease of 192.168.4.51 obtained, lease time 7200
    /etc/udhcpc.d/50default: Adding DNS 202.106.46.151
    /etc/udhcpc.d/50default: Adding DNS 202.106.195.68
    done.

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