Public bug reported:
Binary package hint: knetworkmanager
Summary: Applied manual configuration in kubuntu in order to switch from
dhcp to static addresses for one machine. It wouldn't enable the
interface after that.
Steps
1. Install Ubuntu
2. Install kubuntu-desktop on top of that
3. Verify that the machine is using the automatic configuration in
KNetworkManager
4. Right-click the network icon in the system tray and choose Manual
configuration
5. Select the interface and select Configure Interface, select the option for
Manual address and check the box for 'Activate when the computer starts ',
select OK, OK
6. Verify if the network is enabled by single clicking the network icon on
KNetworkManager in the system tray
7. Attempt to ping other machines in the network or ping yahoo.com
8. Restart the machine and attempt steps 6 and 7 again
9. Logout and login to Gnome and re try step 6 and 7
Expected Results: Once setting the manual configuration in step 5, if
the ip address that was set was a free valid one in that network subnet,
the interface that was changed should be displayed as active in step 6
when checking the connection status. In addition to this, the pings of
the network and yahoo.com should be successful in step 7. The retries in
step 8 and 9 should also be successful.
Actual Results: Once the configuration is changed to manual in step 5,
the connection status in step 6 reveals that no network device is
active. the attempts at accessing other machines on the network in step
7 is not successful.
The retry after restarting in step 8 also fails.
Once logging into Gnome however, the equivalent Network Manager status
dialog in gnome shows that the network is set to the address that was
set in kubuntu manual configuration, network manager also shows that the
configuration is set to manual. The pings are also successful in gnome
in this manual configuration.
If Manual configuration is also accessed, and Roaming mode enabled so
that Network Manager manages the connection as dhcp, when logging back
into kde, the network interface works again.
The network interface should remain active if setting it to manual from
kubuntu knetworkmanager
** Affects: knetworkmanager (Ubuntu)
Importance: Undecided
Status: New
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Cannot activate network interface in kubuntu after switching to manual
configuration
https://bugs.launchpad.net/bugs/212365
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