[Mainline ethernet driver H3]

With your kernel and dtb and lib/modules the ethernet led lights up

 IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

The distro uses ethernet by:

ifconfig eth0 down
ifconfig eth0 add 192.168.1.30 up
route add default gw 192.168.1.1
echo nameserver 192.168.1.1 >> /etc/resolv.conf

What could be wrong?

[Mainline ethernet driver H3]

I tried:

1) montjoie's using make defconfig,then make zImage ,dtbs 

2) megous same way as above

3) armbian kernel

 

and every dtbs for plus2E or plus

 

None worked,all same issue as above.

[Mainline ethernet driver H3]

Could this issue be a problem in the distro and the kernel?
How do i troubleshoot this?

And when compiling kernel , how do i configure it?

Do i use defconfig ?

[Mainline ethernet driver H3]

I am using kernel 4.9 built from https://github.com/megous/linux and tried DTB plus/plus2E in a custom distro ,But the ethernet isn't working.

ifconfig: SIOCGIFFLAGS: No such device
ifconfig: SIOCSIFADDR: No such device
route: SIOCADDRT: Network is unreachable

What could be the reason?

[Opi+2e / mainline / ethernet not working any more]

Can you please post where can i find a dtb for the Plus 2E with gigabit ethernet working and USB fully working(+ USB OTG)

and if there isn't how do i modify existing dtb files for Plus 2E to support gigabit ethernet.

[Speed up boot time]

The kernel used to boot in 2.7s but when i reinstalled armbian on the eMMC again it now boots in almost 6s, how do i know what delays the kernel like that and what changed.i needed to reinstall as i had masked an important module and SSH wasn't connecting.

[Speed up boot time]

What is udev?

[Speed up boot time]

I am running from the internel eMMC 

[Speed up boot time]

I will be using this server to stream cameras in an rov and need to have it on very quick from cold boot.

 

Is there a way to start a binary quicker than that and also what is taking systemd so long to run my serivce?

 

Thanks in advance.

[Speed up boot time]

Using my custom service:

[Unit]
Description=virtualhere
After=system.slice
DefaultDependencies=no

[Service]
ExecStart=/root/vhusbdarm

Is there a way to make it faster , it takes about 20 secs for the client to see the server after power on.

 

Update:

 

What stuff runs before system.slice that makes it take time to boot?

[Speed up boot time]

Running virtualhere server as soon as kernel boots ~ 2.7s

 

To decrease wait time before server is ready

[Speed up boot time]

How do i start a service right after the kernel using systemd? 

[Speed up boot time]

Ok here is a list after i removed a few:

          1.669s networking.service
           770ms systemd-logind.service
           749ms systemd-udev-trigger.service
           699ms rc-local.service
           589ms systemd-user-sessions.service
           569ms loadcpufreq.service
           509ms systemd-setup-dgram-qlen.service
           499ms systemd-modules-load.service
           489ms kbd.service
           479ms console-setup.service
           409ms keymap.service
           409ms systemd-random-seed.service
           399ms systemd-remount-fs.service
           389ms kmod-static-nodes.service
           369ms systemd-tmpfiles-setup-dev.service
           319ms cpufrequtils.service
           299ms systemd-sysctl.service
           281ms rsyslog.service
           243ms dev-mqueue.mount
           219ms systemd-tmpfiles-setup.service
           202ms sys-kernel-debug.mount
           150ms sys-fs-fuse-connections.mount
           149ms systemd-rfkill@rfkill0.service
           119ms udev-finish.service
           119ms systemd-update-utmp.service
           113ms systemd-update-utmp-runlevel.service
            79ms sysfsutils.service
            78ms user@0.service
            57ms lirc.service
            53ms systemd-udevd.service
            10ms tmp.mount

what services do i not need and are there other ways to reduce boot time.

[Speed up boot time]

Thank you will try it and report what services take alot of time to boot.

[Speed up boot time]

Hi,

I'm using the orange pi plus 2e with armbian server installed on eMMC via the built-in script,as the title says i want ways to reduce boot times.

 

I only need ethernet and usb since i will be using it as a "virtualhere" server.

 

Thanks, linux super noob.

 

regards.

[Pwm on allwinner h3]

There are python libraries for the raspberry pi that use its dma channels to output pwm on any pin chosen?

How do i get PWM out of the allwinner h3?

In the allwinner h3 datasheet it says "12 dma channels".

 

thanks in advance.