Bug 521961 - After upgrading the system to the latest KDE Plasma 6.7.0, when I click on the details of a wired network connection, only the MAC address is displayed; the IP address and other information are not shown.
Summary: After upgrading the system to the latest KDE Plasma 6.7.0, when I click on th...
Status: RESOLVED DUPLICATE of bug 521415
Alias: None
Product: kde
Classification: I don't know
Component: general (other bugs)
Version First Reported In: unspecified
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Unassigned bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-06-22 02:12 UTC by Stanley Chan
Modified: 2026-06-22 06:53 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
screenshots (29.95 KB, image/jpeg)
2026-06-22 02:12 UTC, Stanley Chan 		Details
NetworkManager system journal logs (filtered) ,`nmcli device show` output (7.35 KB, text/plain)
2026-06-22 06:46 UTC, Stanley Chan 		Details
View All Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description Stanley Chan 2026-06-22 02:12:37 UTC 
Created attachment 193510 [details]
screenshots

After upgrading the system to the latest KDE Plasma 6.7.0, when I click on the details of a wired network connection, only the MAC address is displayed; the IP address and other information are not shown. The same issue occurs when connecting to a wireless network—the IP address is not displayed either. As shown in the image. However, internet access works normally. Could this be related to Network Manager or plasma-nm?


Here are my system details:

Operating System: Arch Linux
KDE Plasma Version: 6.7.0
KDE Frameworks Version: 6.27.0
Qt Version: 6.11.1
Kernel Version: 7.0.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-10750H CPU @ 2.60GHz
Memory: 32 GiB of RAM (31.0 GiB usable)
Graphics Processor 1: Intel® UHD Graphics
Graphics Processor 2: Quadro T2000
Manufacturer: LENOVO
Product Name: 20STA00KCD
System Version: ThinkPad P15 Gen 1

Below are the details for ip a:

ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 8c:8c:aa:0e:65:7f brd ff:ff:ff:ff:ff:ff
    altname enx8c8caa0e657f
    inet 192.168.2.196/24 brd 192.168.2.255 scope global dynamic noprefixroute enp0s31f6
       valid_lft 40897sec preferred_lft 40897sec
    inet6 fe80::8a19:8a7b:6390:43a/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 04:6c:59:2d:1d:1f brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.104/24 brd 192.168.2.255 scope global dynamic noprefixroute wlan0
       valid_lft 43036sec preferred_lft 43036sec
    inet6 fe80::b897:941d:74c2:70b5/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
Comment 1 Antonio Rojas 2026-06-22 06:44:04 UTC 

*** This bug has been marked as a duplicate of bug 521415 ***
Comment 2 Stanley Chan 2026-06-22 06:46:58 UTC 
Created attachment 193517 [details]
NetworkManager system journal logs (filtered) ,`nmcli device show` output
Comment 3 Stanley Chan 2026-06-22 06:53:42 UTC 

# 🐛 Bug Report: Plasma Network Management Applet Does Not Display IPv4 Address (Arch Linux + NetworkManager)

## 📌 Summary

After upgrading Arch Linux system packages (including NetworkManager and KDE Plasma components), the KDE Plasma Network Management applet no longer displays IPv4 address information for active wired connections. However, NetworkManager successfully obtains and assigns an IP address at the system level.

Only MAC address information is shown in the KDE UI, while IPv4/IPv6 details are missing.

---

## 🖥️ System Environment

* OS: Arch Linux (rolling release)
* Desktop Environment: KDE Plasma (latest version after system upgrade)
* Network Stack:

  * NetworkManager: 1.56.1-1
  * DHCP client: internal (NetworkManager built-in)
  * Backend DNS: systemd-resolved (symlink mode)
* Interface: Ethernet (enp5s0)
* KDE Network Applet: plasma-nm (latest from Arch repos)

---

## 🔄 Steps to Reproduce

1. Upgrade system packages:

   ```bash
   pacman -Syu
   ```

2. Reboot system

3. Connect via wired Ethernet (DHCP)

4. Open KDE Plasma Network Management widget

5. Check connection details

---

## ❗ Expected Result

The KDE Network Management applet should display:

* IPv4 address (e.g., 192.168.2.215)
* Gateway
* DNS servers
* IPv6 configuration (if available)

---

## ❌ Actual Result

KDE Plasma Network Management applet only shows:

* MAC address of interface
* No IPv4 address
* No IPv6 address
* No gateway or DNS information

However, system-level networking works correctly.

---

## 📊 NetworkManager Logs (Relevant Excerpt)

The following logs confirm that DHCP and IP assignment are successful:

```
dhcp4 (enp5s0): state changed new lease, address=192.168.2.215
policy: set 'Wired connection 1' as default for IPv4 routing and DNS
device (enp5s0): state change: ip-config -> activated
Activation: successful, device activated.
manager: NetworkManager state is now CONNECTED_GLOBAL
```

This confirms:

* DHCP lease successfully obtained
* IPv4 address assigned: 192.168.2.215
* Device fully activated and routed

---

## 🔍 Additional Observations

* NetworkManager version: 1.56.1-1 (Arch Linux)
* Plasma appears unable to retrieve IP configuration via D-Bus
* `nmcli` correctly shows IP information
* System routing and connectivity are fully functional

Example (system-level confirmation):

```
nmcli device show enp5s0
IP4.ADDRESS[1]: 192.168.2.215/24
```

---

## 🧩 Suspected Cause

The issue appears to be a mismatch or regression between:

* `plasma-nm` (KDE Network Management applet)
* `NetworkManager` D-Bus API (Device.IP4Config interface)

Possible causes:

1. Plasma Network Management applet failing to query IP4Config via D-Bus
2. API changes or timing differences in NetworkManager 1.56+
3. Plasma 6 compatibility regression with newer NetworkManager versions
4. Missing or broken integration in `org.freedesktop.NetworkManager.Device.IP4Config`

---

## 🧪 Workaround Status

* `nmcli` shows correct IP information ✔
* `ip addr` shows correct IP assignment ✔
* KDE UI does not display IP ❌

No user-side fix currently available in GUI layer.

---

## 📎 Impact

* Affects usability of KDE Network Management applet
* Misleading UI (shows incomplete connection state)
* Forces users to rely on CLI tools (`nmcli`, `ip`)

---

## 📌 Request

Please investigate potential regression in:

* `plasma-nm` D-Bus integration with NetworkManager 1.56+
* IPv4/IPv6 data retrieval in KDE Plasma network widget

---

## 🧾 Attachments

* NetworkManager system journal logs (filtered)
* `nmcli device show` output (available upon request)

---