Tutorial

network proxy

System wide: Network—>None/Manual
chrome: can not set
firefox: about:preferences—> Network Proxy

eth0 config

rename xxx to eth0

errors may occur:

Ubuntu networking restart | cannot find device 'eth0'

check eth0

dmesg | grep eth 

[5.715564] e1000 0000:02:01.0 eth0: (PCI:66MHz:32-bit) 00:0c:29:7d:bf:43
[5.715573] e1000 0000:02:01.0 eth0: Intel(R) PRO/1000 Network Connection
[5.719709] e1000 0000:02:01.0 ens33: renamed from eth0

and we get ens33 renamed from eth0, we need to change it back to eth0.

solution

edit grub and update

 $ sudo vim /etc/default/grub

 #GRUB_CMDLINE_LINUX=""
 GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

 $ sudo update-grub

edit network interfaces /etc/network/interfaces

 auto lo
 iface lo inet loopback

 auto eth0
 iface eth0 inet static
 address 192.168.1.77 
 netmask 255.255.255.0
 gateway 192.168.1.1

reboot
```
 sudo reboot now
```

check eth0

 $ sudo ifconfig

 eth0      Link encap:Ethernet  HWaddr 80:fa:5b:47:92:8a  
             inet addr:192.168.1.77  Bcast:192.168.1.255  Mask:255.255.255.0
             UP BROADCAST MULTICAST  MTU:1500  Metric:1
             RX packets:0 errors:0 dropped:0 overruns:0 frame:0
             TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000 
             RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

 lo        Link encap:Local Loopback  
             inet addr:127.0.0.1  Mask:255.0.0.0
             inet6 addr: ::1/128 Scope:Host
             UP LOOPBACK RUNNING  MTU:65536  Metric:1
             RX packets:4640 errors:0 dropped:0 overruns:0 frame:0
             TX packets:4640 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000 
             RX bytes:865530 (865.5 KB)  TX bytes:865530 (865.5 KB)

OK. Now we get eth0,wlan0 properly set.

ldconfig

libEGL

error

$ sudo ldconfig

/sbin/ldconfig.real: /usr/lib/nvidia-384/libEGL.so.1 is not a symbolic link
/sbin/ldconfig.real: /usr/lib32/nvidia-384/libEGL.so.1 is not a symbolic link

fix

sudo rm /usr/lib/nvidia-384/libEGL.so 
sudo rm /usr/lib/nvidia-384/libEGL.so.1 

sudo ln -s /usr/lib/nvidia-384/libEGL.so.384.90 /usr/lib/nvidia-384/libEGL.so.1
sudo ln -s /usr/lib/nvidia-384/libEGL.so.1 /usr/lib/nvidia-384/libEGL.so

# fix lib32
sudo rm /usr/lib32/nvidia-384/libEGL.so 
sudo rm /usr/lib32/nvidia-384/libEGL.so.1 

sudo ln -s /usr/lib32/nvidia-384/libEGL.so.384.90 /usr/lib32/nvidia-384/libEGL.so.1
sudo ln -s /usr/lib32/nvidia-384/libEGL.so.1 /usr/lib32/nvidia-384/libEGL.so

list libEGL.so of lib

$ ls -al libEGL.so*

lrwxrwxrwx 1 root root    33 1月   8 11:24 libEGL.so -> /usr/lib/nvidia-384/libEGL.so.1
lrwxrwxrwx 1 root root    38 1月   8 11:24 libEGL.so.1 -> /usr/lib/nvidia-384/libEGL.so.384.90
-rw-r--r-- 1 root root 15012 9月  20 08:44 libEGL.so.384.90

list libEGL.so of lib32

$ ls -al libEGL.so*

lrwxrwxrwx 1 root root    33 1月   8 11:24 libEGL.so -> /usr/lib32/nvidia-384/libEGL.so.1
lrwxrwxrwx 1 root root    38 1月   8 11:24 libEGL.so.1 -> /usr/lib32/nvidia-384/libEGL.so.384.90
-rw-r--r-- 1 root root 15012 9月  20 08:44 libEGL.so.384.90