Error saving /etc/dhcpcd.conf The dhcpcd configuration file is not writeable (Raspberrypi 3b+)

Question

If I put the cursor over the Wi-Fi icon, it says 'No wireless interface found'.

Also, if I press Wireless & Wired Network Settings, the error saving /etc/dhcpcd.conf notification appears.

The picture below is the result of command sudo nano /etc/dhcpcd.conf.

And the picture below is the result of command sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

I don't know what's the problem. I tried all the ways to solve problems similar to mine on the Internet, but I can't solve this issue.

Thanks for reading.

You have obviously modified /etc/dhcpcd.conf which is presumably the cause of your problem. DO NOT paste pictures paste TEXT. NOTE there is ABSOLUTELY no point in trying to obscure private IP addresses. — Milliways, Oct 08 '20 at 05:42
First execute these commands: sudo systemctl daemon-reload and sudo systemctl restart dhcpcd.service. Then do these commands, edit your question and paste its text output to it: ls -l /etc/dhcpcd.conf and systemctl status dhcpcd.service. Don't use screenshots as images! — Ingo, Oct 08 '20 at 08:37
@JaromandaX the output is '/dev/mmcblk07 on / type ext4 (rw, noatime)' — Moon, Oct 08 '20 at 09:25
@Ingo I did these commands. And I want to paste the text output, but I can't copy and paste the text here from the laptop connected to the Raspberrypie to my laptop. It's not connected to each other. What do I do? I just have to write down the output? — Moon, Oct 08 '20 at 09:32
no, but noobs causes more issues than it solves :p (not this one though, your root is mounted read-write, so that's not going to be the problem) — Jaromanda X, Oct 08 '20 at 09:37
@Milliways I want to copy and paste the text output, but I can't copy and paste the text here from the laptop connected to the Raspberrypie to my laptop. It's not connected to each other. What do I do? I just have to write down the output? — Moon, Oct 08 '20 at 10:22
None of the comments or your responses have addressed the fact that you have fiddled with /etc/dhcpcd.conf (for whatever reason) which you have not explained. Without this any further comment is futile. — Milliways, Oct 08 '20 at 10:46
@Moon you could just open this question here and sign in and edit the question on the RPi. Just copy (I think it's CTRL + SHIFT + C instead, but someone please correct me if I'm wrong) and paste into here. — Unsigned_Arduino, Oct 08 '20 at 12:00
@Unsigned_Arduino I thought the wifi connection wasn't working, so I thought internet connection would not work. but, this link will be open, right? Thanks for letting me know. — Moon, Oct 08 '20 at 13:34
Ah true, did not think that through. You gonna have to manually type it out or use a console cable to access the Pi — Unsigned_Arduino, Oct 08 '20 at 14:26
@Moon Please don't type it out. It's too much and annoying. Take a picture. — Ingo, Oct 08 '20 at 16:05

Milliways · Answer 1 · 2020-10-09T03:29:20.910

You have obviously modified /etc/dhcpcd.conf which is presumably the cause of your problem; either the contents are corrupt or the permissions wrong.

As you have not explained what you did or shown the contents or permissions and obscured relevant details it is difficult to make any concrete suggestions.

You should restore /etc/dhcpcd.conf to its default. (It is best practice to ALWAYS make a backup copy of systems files before modifying them.)

If you can not do this, either restore from your backup or do a fresh installation - preferably NOT using NOOBS

NOOBS contains instructions for installation.

Judging from the fragments that are visible, you appear to have attempted to set a Static IP Address. This is not recommended in most cases, but if you want to How to set up Static IP Address explains alternatives and instructions on how to do it properly.

How to set up networking/WiFi is a more general guide to configuring Raspbian networking.

PS It is recommended that when editing system files you use sudoedit rather than sudo nano.

Error saving /etc/dhcpcd.conf The dhcpcd configuration file is not writeable (Raspberrypi 3b+)

1 Answers1