VSCode, Intellisense C++ Autocomplete not working, ubuntu 20.04 - intellisense

Question

I have installed Vscode under ubuntu 20.04. I cannot code without having intellisense autocomplete. But it is not working. I have used autocomplete in previous ubuntu LTS(16.04 , 18.04) with no problem.
I have configured c_cpp_properties.json.
{
"configurations": [
{
"name": "Linux",
"browse": {
"path": [
"/usr/include",
"/usr/include/x86_64-linux-gnu/qt5",
"/usr/include/pcl",
"/usr/include",
"/usr/lib",
"/usr/share"
],
"limitSymbolsToIncludedHeaders": true
},
"includePath": [
"/home/atas/colcon_ws/src/ROS_CB/chiconybot_ui/include/",
"/home/atas/colcon_ws/build/chiconybot_ui/",
"/usr/include/opencv4/",
"/opt/ros/foxy/include/",
"/usr/include/",
"/usr/include/x86_64-linux-gnu/qt5/"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "clang-x64"
}
],
"version": 4
}
The header files are found correctly. I also installed all necessary extensions from VSCode marketplace.
I followed steps for configuring settings.json herelink
Finally, my settings.json looks like;
{
"files.associations": {
"cctype": "cpp",
"cmath": "cpp",
"csignal": "cpp",
"cstdarg": "cpp",
"cstddef": "cpp",
"cstdio": "cpp",
"cstdlib": "cpp",
"cstring": "cpp",
"ctime": "cpp",
"cwchar": "cpp",
"cwctype": "cpp",
"atomic": "cpp",
"strstream": "cpp",
"chrono": "cpp",
"cstdint": "cpp",
"initializer_list": "cpp",
"iosfwd": "cpp",
"mutex": "cpp",
"ratio": "cpp",
"system_error": "cpp",
"thread": "cpp",
"cinttypes": "cpp",
"typeindex": "cpp",
"deque": "cpp",
"vector": "cpp",
"array": "cpp",
"*.tcc": "cpp",
"bitset": "cpp",
"clocale": "cpp",
"complex": "cpp",
"condition_variable": "cpp",
"list": "cpp",
"unordered_map": "cpp",
"exception": "cpp",
"fstream": "cpp",
"functional": "cpp",
"iomanip": "cpp",
"iostream": "cpp",
"istream": "cpp",
"limits": "cpp",
"memory": "cpp",
"new": "cpp",
"ostream": "cpp",
"numeric": "cpp",
"sstream": "cpp",
"stdexcept": "cpp",
"streambuf": "cpp",
"type_traits": "cpp",
"tuple": "cpp",
"typeinfo": "cpp",
"utility": "cpp",
"valarray": "cpp",
"*.ipp": "cpp",
"codecvt": "cpp",
"future": "cpp",
"hash_map": "cpp",
"hash_set": "cpp",
"core": "cpp",
"dense": "cpp",
"numericaldiff": "cpp",
"unordered_set": "cpp",
"algorithm": "cpp",
"cfenv": "cpp",
"random": "cpp",
"optional": "cpp",
"string_view": "cpp",
"iterator": "cpp",
"map": "cpp",
"memory_resource": "cpp",
"set": "cpp",
"string": "cpp",
"slist": "cpp",
"shared_mutex": "cpp",
"forward_list": "cpp",
"qvboxlayout": "cpp",
"qstringlist": "cpp",
"qspinbox": "cpp",
"qstatusbar": "cpp",
"qpushbutton": "cpp",
"qcombobox": "cpp",
"qgraphicsopacityeffect": "cpp",
"qmovie": "cpp",
"qtimer": "cpp",
"qpainter": "cpp",
"qwidget": "cpp",
"qtwidgets": "cpp",
"regex": "cpp",
"qhostaddress": "cpp",
"qaction": "cpp",
"qlayout": "cpp",
"qframe": "cpp",
"qlayoutitem": "cpp",
"qsize": "cpp",
"qset": "cpp"
},
"editor.formatOnSave": true,
"python.pythonPath": "/usr/bin/python3",
"git.ignoreLimitWarning": true,
// Controls if quick suggestions should show up while typing
"editor.quickSuggestions": {
"other": true,
"comments": false,
"strings": false
},
// Controls whether suggestions should be accepted on commit characters. For example, in JavaScript, the semi-colon (`;`) can be a commit character that accepts a suggestion and types that character.
"editor.acceptSuggestionOnCommitCharacter": true,
// Controls if suggestions should be accepted on 'Enter' - in addition to 'Tab'. Helps to avoid ambiguity between inserting new lines or accepting suggestions. The value 'smart' means only accept a suggestion with Enter when it makes a textual change
"editor.acceptSuggestionOnEnter": "on",
// Controls the delay in ms after which quick suggestions will show up.
"editor.quickSuggestionsDelay": 10,
// Controls if suggestions should automatically show up when typing trigger characters
"editor.suggestOnTriggerCharacters": true,
// Controls if pressing tab inserts the best suggestion and if tab cycles through other suggestions
"editor.tabCompletion": "on",
// Controls whether sorting favours words that appear close to the cursor
"editor.suggest.localityBonus": true,
// Controls how suggestions are pre-selected when showing the suggest list
"editor.suggestSelection": "recentlyUsed",
// Enable word based suggestions
"editor.wordBasedSuggestions": true,
// Enable parameter hints
"editor.parameterHints.enabled": true,
"cmake.configureOnOpen": false,
}
I cannot think of a reason why the autocomplete wont work now. Please see whether you spot a mistake. Let me know in comments if more information is needed.
Thank you

Answer 1

Turns out that some problem related to VSCode itself. I checked for the new updates on help -> Check for Updates , after a new update things get back to normal. The current version that works is ;