Now that the issue with kernel 6.8.0-45-generic is identified and
addressed, I can report the NetworkManager stoppages continue. At this
stage I am essentially unable to use Sleep mode. Every time the system
returns from Sleep mode either the NetworkManager is already frozen or
stops functioning within a minute or so. This problem is rather
limiting.

Thank you for reading.

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https://bugs.launchpad.net/bugs/2080489

Title:
  Network Manager stops functioning on Ubuntu 24.04

Status in linux package in Ubuntu:
  Incomplete
Status in network-manager package in Ubuntu:
  New

Bug description:
  I installed Ubuntu 24.04 about a month ago on a Asus Vivobook. Soon
  after the NetworkManager started misbehaving, with all connections to
  the internet becoming idle now and then. When this event happens the
  only way to restore internet access is to reboot the system. If
  initially these events were occasional, they now take place 3 or 4
  times per day, often after signing in from the lock screen.

  So far I was not able to verify whether NetworkManager is actually
  crashing, the Settings programme reports "NetworkManager not running"
  (see attached image). However, in the command line `systemctl` reports
  an active service:

  ```
  $ systemctl status NetworkManager
  ● NetworkManager.service - Network Manager
       Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled>
       Active: active (running) since Sun 2024-08-27 18:21:44 WEST; 2h 18min a>
         Docs: man:NetworkManager(8)
     Main PID: 1149 (NetworkManager)
        Tasks: 4 (limit: 18646)
       Memory: 12.2M (peak: 28.6M)
          CPU: 836ms
       CGroup: /system.slice/NetworkManager.service
               └─1149 /usr/sbin/NetworkManager --no-daemon

  ago 27 19:34:08 Symbolic NetworkManager[1149]: <info>  [1724006048.8961] man>
  ago 27 19:34:08 Symbolic NetworkManager[1149]: <info>  [1724006048.8965] dev>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.1482] dev>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.1484] dev>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.1488] dhc>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.1488] dhc>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.1489] dhc>
  ago 27 19:34:09 Symbolic NetworkManager[1149]: <info>  [1724006049.2049] dev>
  ago 27 20:33:50 Symbolic NetworkManager[1149]: <info>  [1724009630.5340] man>
  ago 27 20:33:50 Symbolic NetworkManager[1149]: <info>  [1724009630.5344] dev>
  ```

  But if I try to restart the service, the command line just hangs up:

  ```
  $ ping 1.1.1.1
  ping: connect: Network is unreachable

  $ sudo systemctl restart NetworkManager

  ```

  Also from `ifconfig` there is no response:

  ```
  $ ifconfig -a

  ```

  Please let me know if there is further useful information I can
  report.

  Thank you.

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