"The system network services are not compatible with this version" - ubuntu 14.04
404
Last upgrade crashes network manager (no internet connection, no applet)
114837
Arch Linux 2014.04 64bit and connectivity problem during installation
143645
How to fix "*:i386 cannot be configured because *:amd64 is in a different version"?
42370
Can't connect to a specific WiFi network (Ubuntu 14.04)
41519
What can I do if a package is not available on the newest version of Ubuntu (18.04) but is available on older versions?
19411
Wireless networking not working after resume in Ubuntu 14.04
149984
Can't update or install anything. Ubuntu 3.11.0.14
56661
Ubuntu 16.04 LTS Network Manager cannot add VPN - greyed out
46513
WiFi module 8812AU not working with kernel version >= 4.4.0-28-generic
103574
Edimax EW-7811Un wifi adapter not working on Ubuntu 14.04 LTS
13945
Can't enable the proprietary drivers for Broadcom BCM43142 wireless after installing Ubuntu 14.10? Offline package required?
1632
How do I fix a "Failed to download package files" error?
38277
Ubuntu - saying your security settings have blocked an application from running with an out-of-date version of java
23832
How to restart the networking service?
21184
Running "sudo apt-get update" returns connection errors
5193
What causes the 'Connection Refused' message?
42236
"W: Possible missing firmware for module i915_bpo" when updating initramfs