Oleksandr Gornostal gornostal

USB-C Monitor Hotplug Detection Fix for Linux on Arrow Lake-P

Problem Description

External monitor connected via USB-C to HDMI cable is not detected on hotplug in Elementary OS. The monitor only appears after a full system reboot. The same cable and monitor work perfectly on another laptop running Ubuntu, confirming the hardware is functional.

System Configuration

OS: Elementary OS 8 (based on Ubuntu 24.04)
Kernel: 6.14.0-34-generic

Intel BE200 Wi-Fi Resume Fix on Ubuntu 25.10

This guide documents the suspend/resume Wi-Fi failure observed on a Lenovo IdeaPad running Ubuntu 25.10 desktop and walks through the exact remediation steps that were validated on October 27, 2025. Use it after a fresh OS install or kernel update if the problem reappears.

1. Problem Overview

Hardware: Lenovo IdeaPad Pro 5-14IAH10 with Intel BE200 (Wi-Fi 7) controller at PCI address 0000:01:00.0 (device id 8086:272b).
Kernel Symptom: After resuming from suspend (s2idle), the wireless adapter stays in PCI power state D3cold and never returns, leaving wlp1s0f0 unavailable. Logs show:
- Unable to change power state from D3cold to D0, device inaccessible
timeout waiting for FW reset ACK followed by repeated firmware crashes.

Keybase proof

I hereby claim:

I am gornostal on github.
I am agornostal (https://keybase.io/agornostal) on keybase.
I have a public key ASAuglcs9fAD6hgQznImKHGJzrYC-0M6UjXSbfZ71VMHkwo

To claim this, I am signing this object:

	FROM node:12-alpine as build
	WORKDIR /www

	ENV REACT_APP_KEYCLOAK_URL %REACT_APP_KEYCLOAK_URL%
	ENV REACT_APP_KEYCLOAK_REALM %REACT_APP_KEYCLOAK_REALM%

	COPY package*json ./
	RUN npm install
	COPY . .
	RUN npm run build

	+380 (99) 047 11 02 - Slava
	+380 (66) 435 53 36 - Mom
	+380 93 308 1268 - Dad
	+380 99 609 1473 - Marina

	#!/usr/bin/env python3
	import paramiko
	from paramiko import rsakey

	kf = open("/root/.ssh/old/id_rsa", "r")

	prefix = "prefix"
	chars = {"a", "b", "c"}

	import React, { Component } from 'react'
	import Helmet from 'react-helmet'
	import QrCode from 'qrcode.react'

	import { uploadImage, addJson, getJson, getIpfsHashFromBytes32, getBytes32FromIpfsHash } from '../utils/ipfs'
	import './ipfs.css'

	export default class Ipfs extends Component {
	constructor(props) {
	super(props)

	ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["*"]'
	ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods '["PUT", "GET", "POST"]'

	7455u
	6388m