Kubuntu 18.04 - How the heck do I change the IP address that "Desktop Sharing" is listening to?

wh33t · 05-16-2020, 07:14 PM

This window right here

How can I change that address? For me it's listing an IP address that I believe is a Vbox virtual nic. I want it to listen to an actual IP address reachable on my home network and I can't for the life of me figure out how to adjust it. Clickin on that little (i) icon just tells me

Quote:

The address is just a hint - you can use any address that can reach your computer. Desktop Sharing tries to guess your address from your network configuration, but does not always succeed in doing so. If your computer is behind a firewall it may have a different address or be unreachable for other computers.

Surely there is a script or something I can edit?

michaelk · 05-17-2020, 05:01 PM

I believe the default NAT network is 10.0.x.0/24 and would guess your virtual machine is using bridged mode.

If the virtual machine networking adapter is configured for NAT then it is using an internal DHCP server provided by VirtualBox.

If the virtual machine networking adapter is configured for Bridged mode then it will acquire an address from your LAN network DHCP server and be just like any other device.

You might have a virtual adapter i.e virb0 but that would not be a 192.168.0.x ip address.

wh33t · 05-17-2020, 06:00 PM

Quote:

Originally Posted by michaelk

I believe the default NAT network is 10.0.x.0/24 and would guess your virtual machine is using bridged mode.

If the virtual machine networking adapter is configured for NAT then it is using an internal DHCP server provided by VirtualBox.

If the virtual machine networking adapter is configured for Bridged mode then it will acquire an address from your LAN network DHCP server and be just like any other device.

You might have a virtual adapter i.e virb0 but that would not be a 192.168.0.x ip address.

There is 5 VM's running on this machine, they are all configured specifically how they need to be (running IP cameras and what not). I appreciate the response but is there a way to just edit directly the Desktop Sharing IP? I suppose I should just contact the devs of KDE directly somehow.

michaelk · 05-17-2020, 06:28 PM

I had just installed Kubuntu as a VirtualBox VM just a few days ago and actually verified the image you posted.

It is not a hint and what is displayed is the actual IP address of the virtual network adapter. Again if the virtual network adapter is configured as bridged mode, that IP is on your LAN and you do not have to do anything special. On a small home network running the latest DHCP server the IP address typically do not change but just to be sure you should be able to add them as a DHCP address reservation.

If your VMs network adapters are running as NAT and you do not want to change that setting you can configure port forwarding just like "real hardware" Each VM network will be a different IP address as posted above.

wh33t · 05-17-2020, 06:35 PM

Quote:

Originally Posted by michaelk

I had just installed Kubuntu as a VirtualBox VM just a few days ago and actually verified the image you posted.

It is not a hint and what is displayed is the actual IP address of the virtual network adapter. Again if the virtual network adapter is configured as bridged mode, that IP is on your LAN and you do not have to do anything special. On a small home network running the latest DHCP server the IP address typically do not change but just to be sure you should be able to add them as a DHCP address reservation.

If your VMs network adapters are running as NAT and you do not want to change that setting you can configure port forwarding just like "real hardware" Each VM network will be a different IP address as posted above.

None of my VMs are Kubuntu. My host OS is (that's where I want to VNC into). I actually disabled my VM's from starting at boot, rebooted the machine, and the first thing I ran was KRFB (Desktop Sharing) and it actually had the right IP address listed in there. However once the VM's are started the application (KRFB) appears to crash and will not launch again. I'm not sure what the issue is or how to fix it and I'm getting really frustrated with it.

Also, that image I posted is just a hot link to the actual KDE setup guide.

michaelk · 05-17-2020, 06:56 PM

OK, sorry for the confusion.

I don't know what could be causing the problem unless there is a conflict somewhere. I have played with RDP on VB hosts but not RFB.

wh33t · 05-17-2020, 10:42 PM

Quote:

Originally Posted by michaelk

OK, sorry for the confusion.

I don't know what could be causing the problem unless there is a conflict somewhere. I have played with RDP on VB hosts but not RFB.

No worries.

While I've got ya here though, would you happen to know...

Can I upgrade from 18.04lts to 20.04lts? That should be possible right?

michaelk · 05-17-2020, 10:47 PM

Yes, it is possible.

wh33t · 05-18-2020, 12:14 AM

Code:

wh33t@wh33tserv1:~$ sudo do-release-upgrade 
[sudo] password for wh33t: 
Checking for a new Ubuntu release
There is no development version of an LTS available.
To upgrade to the latest non-LTS develoment release 
set Prompt=normal in /etc/update-manager/release-upgrades.
wh33t@wh33tserv1:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.4 LTS
Release:        18.04
Codename:       bionic
wh33t@wh33tserv1:~$

Am I doing something wrong?

michaelk · 05-18-2020, 04:16 AM

No, I missed that upgrades will not be enabled until July.
https://help.ubuntu.com/community/FocalUpgrades/Kubuntu

kilgoretrout · 05-18-2020, 10:15 AM

Quote:

Am I doing something wrong?

Try running:

Code:

$ sudo do-release-upgrade -d

That should do the trick. The -d flag is for development release and is needed since an upgrade from one lts to the next is not officially supported until the 20.04.1 version is released in July. I've upgraded 3 kubuntu 18.04 installs to 20.04 installs without issue using this method. As with any upgrade, be sure to do a backup before trying this.

wh33t · 05-18-2020, 10:14 PM

Quote:

Originally Posted by kilgoretrout

Try running:

Code:

$ sudo do-release-upgrade -d

That should do the trick. The -d flag is for development release and is needed since an upgrade from one lts to the next is not officially supported until the 20.04.1 version is released in July. I've upgraded 3 kubuntu 18.04 installs to 20.04 installs without issue using this method. As with any upgrade, be sure to do a backup before trying this.

If I do that will I still be on the actual 20.04lts release when it does officially release?

kilgoretrout · 05-19-2020, 12:22 AM

Quote:

If I do that will I still be on the actual 20.04lts release when it does officially release?

Short answer, yes. Long answer: 20.04lts has been officially released. 20.04.1lts will be released in July. As a matter of policy, Ubuntu does not recommend updating from 18.04lts to 20.04lts until the first point release of the new lts which will be 20.04.1lts. It's always been like that and gives them time to work out any bugs on the new lts release. The method I gave you is the common workaround for people that don't want to wait for the first point release.

There is always risk when upgrading to a new release and you should always do a full backup first and understand how to restore your original installation if something goes wrong. That will be true even if you wait to July when 20.04.1lts is released. The cleanest, most reliable way is to do a fresh install of kubuntu 20.04. However, then you lose all your configuration and have to install all the software you want all over again as well as reconfigure everything again.