Connected WiFi name information cannot be deleted

[virtual163]

Hi, guys,






The following issue occurred in Ubuntu 23.10. When I tried to delete the WIFI information that had already been memorized, I found that the deleted information was indeed missing. However, after the system restarted, the deleted WIFI information returned






I also tried to stop Tptables, but it still didn't work.






I am not sure what caused this issue, and now I am unable to delete the saved network information.






Here are some things I have tried:






1) Nmcli c






Status:


$nmcli c


NAME UUID TYPE DIVICE


WEB WIFI eff2f46d-6167-4de2-ac92-5d711b5b821b wifi wlp9s0


Lo cb8d2101-6af5-458c-929d-1522bb6a2375 loopback lo


China Unicom f914356b-d224-4c01-a67d-d60fb089295d gsm cdc-wdm0


21712 bc03f382-9636-470d-af9f-5bd8cf8ef17d wifi--


AWiFi WHBG-8902 9de7eb79-30cd-4776-8b7f-f62767fb14df wifi--


BDIA_ FREE_ WIFI 89801902-a89a-42e4-8a6f-9be80b160455 wifi--


ChinaNet-4005 36228581-efa7-4499-9d40-4c8bec3d0161 wifi--


ChinaNet-821 f50e33c5-d45d-438a-bb57-198f7a0b15c0 wifi--


ChinaNet DCRxUK 589d8691-b9f6-4958-88a5-0ad56b32e896 wifi--


CMCC-XN2H eacb6958-5fc4-42ff-a817-b77b3b44e9a1 wifi--






2) Nmcli c delete ChinaNet-821


Nmcli c delete ChinaNet-DCRxUK






Status:


L - $nmcli c delete ChinaNet-821


Connection 'ChinaNet-821' (f50e33c5-d45d-438a-bb57-198f7a0b15c0) successfully deleted


ł -[ mrchen@MrChen-T14 ]- [~]


L - $nmcli c delete ChinaNet DCRxUK


Connection 'ChinaNet DCRxUK' (589d8691-b9f6-4958-88a5-0ad56b32e896) successfully deleted


ł -[ mrchen@MrChen-T14 ]- [~]






3) Nmcli c






Status:


$nmcli c


NAME UUID TYPE DIVICE


WEB WIFI eff2f46d-6167-4de2-ac92-5d711b5b821b wifi wlp9s0


Lo cb8d2101-6af5-458c-929d-1522bb6a2375 loopback lo


China Unicom f914356b-d224-4c01-a67d-d60fb089295d gsm cdc-wdm0


21712 bc03f382-9636-470d-af9f-5bd8cf8ef17d wifi--


AWiFi WHBG-8902 9de7eb79-30cd-4776-8b7f-f62767fb14df wifi--


BDIA_ FREE_ WIFI 89801902-a89a-42e4-8a6f-9be80b160455 wifi--


ChinaNet-4005 36228581-efa7-4499-9d40-4c8bec3d0161 wifi--


CMCC-XN2H eacb6958-5fc4-42ff-a817-b77b3b44e9a1 wifi--






4) Reboot






5) $nmcli c






$nmcli c


NAME UUID TYPE DIVICE


WEB WIFI eff2f46d-6167-4de2-ac92-5d711b5b821b wifi wlp9s0


Lo cb8d2101-6af5-458c-929d-1522bb6a2375 loopback lo


China Unicom f914356b-d224-4c01-a67d-d60fb089295d gsm cdc-wdm0


21712 bc03f382-9636-470d-af9f-5bd8cf8ef17d wifi--


AWiFi WHBG-8902 9de7eb79-30cd-4776-8b7f-f62767fb14df wifi--


BDIA_ FREE_ WIFI 89801902-a89a-42e4-8a6f-9be80b160455 wifi--


ChinaNet-4005 36228581-efa7-4499-9d40-4c8bec3d0161 wifi--


ChinaNet-821 f50e33c5-d45d-438a-bb57-198f7a0b15c0 wifi--


ChinaNet DCRxUK 589d8691-b9f6-4958-88a5-0ad56b32e896 wifi--


CMCC-XN2H eacb6958-5fc4-42ff-a817-b77b3b44e9a1 wifi--






Even after restarting many times, I cannot delete the memorized WIFI information






Thank you very much for your help






thanks

[chili555]

May we please see:

uname -r
ls /etc/netplan/
sudo ls /etc/NetworkManager/system-connections/

Thanks.

[virtual163]

Not for this reason, it's an error message

2023-10-24T17:14:03.741639+08:00 MrChen-Duet NetworkManager[700]: netplan_delete_connection: Cannot write output state: Read-only file system
2023-10-24T17:14:03.811173+08:00 MrChen-Duet generate[1795]: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.

[chili555]

Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.

Please do:

sudo chmod 0600 /etc/netplan/01-network-manager-all.yaml

And try again. Run and post:

uname -r
ls /etc/netplan/
sudo ls /etc/NetworkManager/system-connections/

[virtual163]

The permissions have been changed, still the same as before

drwxr-xr-x 2 root root 4096 Oct 26 12:35 ./drwxr-xr-x 156 root root 12288 Oct 26 06:54 ../
-rw-r--r-- 1 root root 49 Oct 26 12:41 01-network-manager-all.yaml
-rw------- 1 root root 350 Oct 26 12:33 50-cloud-init.yaml

[chili555]

Please try again. Here is a sequence from my machine:

chili@T480s:~$ ls -al /etc/netplan
total 28
drwxr-xr-x   2 root root  4096 Oct 24 21:15 .
drwxr-xr-x 144 root root 12288 Oct 26 09:02 ..
-rw-------   1 root root   686 Oct 24 21:08 90-NM-7f6a828b-ff8b-4840-b778-571ce299feed.yaml
-rw-------   1 root root   686 Oct 24 21:09 90-NM-d85106a2-ecf8-4493-8ec5-d93431386ece.yaml
-rwxrwxrwx   1 root root    49 Oct 24 21:02 network_manager.yaml <---wrong permissions
chili@T480s:~$ sudo chmod 0600 /etc/netplan/network_manager.yaml <---change permissions
chili@T480s:~$ ls -al /etc/netplan
total 28
drwxr-xr-x   2 root root  4096 Oct 24 21:15 .
drwxr-xr-x 144 root root 12288 Oct 26 09:02 ..
-rw-------   1 root root   686 Oct 24 21:08 90-NM-7f6a828b-ff8b-4840-b778-571ce299feed.yaml
-rw-------   1 root root   686 Oct 24 21:09 90-NM-d85106a2-ecf8-4493-8ec5-d93431386ece.yaml
-rw-------   1 root root    49 Oct 24 21:02 network_manager.yaml <---correct permissions