VSCodium (VSCode) doesn't start debugging PHP (PHP Debug + Xdebug, Linux) - php

Question

Goal
Debug with PHP Debug, Xdebug and VSCodium.
Problem
VSCode doesn't start debugging. When I click Start Debugging the blue line under the debugging control buttons appears and moves for a few seconds and then the control buttons disappear. Same when I press the green "Run" button
Also on the left side, where "variables", "watch" and "stack" are shown nothing appears.
Description
I have no experience with the VSCodium debugging options. I used a couple of tutorials (1, 2, 3, videos and tried certainly the proposal from the VSCode PHP Debug extension site (which I use).
I'm using Codium (VSCode without MS) on a Linux Mint 20 machine. PHP 7.4 and Xdebug are installed via Linux Synaptic Package Manager. Of course the Xdebug helper in Firefox is enabled, breakpoints are set and I tried it in different projects. I tried a few things in the php.ini. That's how it looks at the moment:
[XDebug]
xdebug.remote_enable = 1
; xdebug.remote_autostart = 1
; xdebug.remote_connect_back = 1
Xdebug itself is loaded via the /etc/php/7.4/cli/conf.d/20-xdebug.ini and in PhpStorm it works like expected but not in VSCodium.
That's the standard launch.json, which is saved in the .vscode folder in the project root:
{
"version": "0.2.0",
"configurations": [
{
"name": "Listen for XDebug",
"type": "php",
"request": "launch",
"port": 9000,
"log": true
},
{
"name": "Launch currently open script",
"type": "php",
"request": "launch",
"program": "${file}",
"cwd": "${fileDirname}",
"port": 9000
}
]
}
Here is a part of my phpinfo() output:
And the xdebug part:
And here the xdebug log when i try it with VSCodium:
[5625] Log opened at 2020-10-04 10:05:20
[5625] I: Connecting to configured address/port: localhost:9000.
[5625] W: Creating socket for 'localhost:9000', poll success, but error: Operation now in progress (29).
[5625] E: Could not connect to client. :-(
[5625] Log closed at 2020-10-04 10:05:20
My guess is, that there is a basic VSCodium debugging thing, I didn't enabled or so. But I don't know, what it could be.
Maybe somebody has an idea?

Answer 1

Finally found the solution. Its a Codium specific bug. At VSCode it works.
Found the solution here:
https://github.com/VSCodium/vscodium/issues/466
make sure you don't have PHP Debug extension installed;
go to https://marketplace.visualstudio.com/items?itemName=felixfbecker.php-debug and download vsix file using "Resources" → "Download Extension";
in VSCodium go to "Extensions" sidebar and then click three dots icon near
to "Extensions" title;
choose "Install from VSIX…" and select downloaded file.
#LazyOne thanks for your help again :)
Edit:
If you are updated to Xdebug 3.* you have to modify the xdebug section in the php.ini:
Add this:
xdebug.mode=debug
xdebug.client_host=127.0.0.1
xdebug.client_port=9000
You could drop the last line if you change instead the port to 9003 in your launch.json.
See also this GitHub Issue