Installed Ubuntu server but after update and reboot no Ethernet!

Raymond Day

Found out have to press F7 then can install from USB.

Any way I installed Ubuntu server on it. In the little I had to work with it it does seem fast!

After updates it had to reboot and I did but now it don't get a ip.

If I do a dhclient it comes back with this.

dhclient error while shared libraries: /lib/x86_64-linux-gnu/libisc-export.so.160: invalid ELF header

Just can't connect to it's Ethernet any more.

Any one know a fix?

-Raymond Day

Raymond Day

Because no Ethernet wanted to get the RS232 working.

I put in the code:

GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=tty0 console=ttyS0,115200n8"
GRUB_TERMINAL_INPUT="console serial"
GRUB_TERMINAL_OUTPUT="gfxterm serial"
GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200"

In a file here:

/etc/default/grub.d/serial.cfg

Rebooted and I get some text. I had to swap the UART0_RXD and UART0_TXD wires.

I get some text as it boots but can't type any thing after it boots.

Get this text as it boots.

error: serial port `com0' isn't found.
error: terminal `serial' isn't found.
error: terminal `serial' isn't found.

GNU GRUB version 2.02~beta2-36ubuntu3.9

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▒*Ubuntu ▒
▒ Advanced options for Ubuntu ▒
▒ System setup ▒
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Use the and keys to select which entry is highlighted.
Press enter to boot the selected OS, `e' to edit the commands
before booting or `c' for a command-line. ESC to return previous
menu.
The highlighted entry will be executed automatically in 0s.

That is though the RS232.

Any way to fix it so I can type commands in it?

This is Ubuntu server no desktop.

-Raymond Day

Raymond Day

I got the Ethernet working! From another Ubuntu server I copied the /lib/x86_64-linux-gnu/libisc-export.so.160.0.0

removed the last two 0's from it's name. Because it just had a link to it from the right name. I put it on a USB drive.

Then on the Up2 typing on the keyboard I did this.

fdisk -l
cd /media/
mkdir temp
mount /dev/sda1 /media/temp/
cp /media/temp/libisc-export.so.160 /lib/x86_64-linux-gnu/libisc-export.so.160
dhclient enp2s0
ifconfig

Seen it got a IP then.

Fixed it! Junk way to do it copy what looks like a bin file from another server.

-Raymond Day

uricohn

@Raymond Day
I have the same problem where the Up board won't connect.
Did you see a link at least in the beginning (first time out of the box) or did you at least had once a connection?
I am trying to understand if I got a defective board or am I just doing something wrong as it is my first time with the realsense?

Uri

ccalde

Hi @uricohn ,

What is your exactly problem with the connection?
Did you install Ubuntu server (which version??) on a UPSquared board and you don't have any IP, no wired connection?
And did you try the Raymond fix?

Cheers!