Issue using my laptop as a monitor through SSH and putty

[morpheusking]

Hi

So I have a raspberry Pi 2 B+ that I can connect to my laptop with an Ethernet cable - whether I am connected to the internet or not - I connect through putty and open the GUI through xming and all is good. This works fine whether or not I have "allow other network users to connect through this computers internet connection" selected and works when i am or am not connected to the internet. Basically it works no matter what.

I bought a 3 B+ and am trying to do the same but cannot get it to work. Please can someone give me an idiots guide as to how I can achieve the above.

I followed a guide and long story short it said type in sudo nano /etc/dhcpcd.conf and put the below info in:

interface eth0
static ip_address=192.168.137.22

interface wlan0
static ip_address=192.168.0.18

static routers=192.168.0.1
static domain_name_servers=192.168.137.1 192.168.0.1

192.168.137.22 works when i have the internet connection sharing box ticked but does not work when its not. Why is it the 2 b+ works regardless and this one doesn't? I cant find the guide I used to setup my first one and don't know what I'm doing wrong.

The only difference is in the cmdline.txt file on the 2 B+ the ip address I type into putty to connect is there whereas on the 3+ it isn't.

What is different about the two models as one will work and this one doesn't...

All I want to do is to use my laptop as a monitor, mouse and keyboard and be able to connect through the Ethernet cable like i do with my other one. I often bring it to work and mess around in my lunch break so don't have internet access.

sorry for the essay!

thanks

James

[FTrevorGowen]

...

The only difference is in the cmdline.txt file on the 2 B+ the ip address I type into putty to connect is there whereas on the 3+ it isn't.

...

thanks

James

What happens if you add (a similar) address in the same way into /boot/cmdline.txt for the 3B+ ? Also you don't state what O.S. you're using (so Raspbian will be assumed) or what version (ie. is it up to date)?
Trev.

[morpheusking]

Hi Trevor,

I downloaded Raspbian today from the official raspberry Pi website and ran all the updates so It should be whatever the latest version is. I’m a bit of a noob with all this so forgive me.

Yeah I tried that on the 3B+ with no luck.

Now interestingly the 2 B+ will only allow me to connect if I turn WiFi off on the laptop > it connects > then I can turn WiFi on and it stays connected. Weird thing is I haven’t changed anything on the 2... going to sleep on it and have another look tomorrow. Been trying everything I can think of/find on google for about 8 hours today...