TI中文支持网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 : 0x7c0f1udhcpc (v1.20.2) startedSending discover…[ 8.452972] PHY: 0:00 – Link is Up – 100/FullSending discover…Sending discover…No lease, failingdone.INIT: Entering runlevel: 5Starting system message bus: dbus.Starting telnet daemon.Starting syslogd/klogd: doneStarting thttpd.Stopping Bootlog daemon: bootlogd.
这种问题如何解决？谢谢
Jian Zhou：
为什么要加这个选项，是想增加内核实时性么？
kun han：
回复 Jian Zhou:
是想增加内核实时性
Jian Zhou：
回复 kun han:
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。
kun han：
回复 Jian Zhou:
修改/etc/network/interfaces文件 添加udhcpc_opts -R -b
auto eth0iface 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.
