Matt Bell mattbell87

iMac12,1 (21.5" mid-2011) — GPU glitch / lockup on wake from sleep (Linux)

Machine: Apple iMac12,1 (21.5", mid-2011) GPU driving the panel: AMD Radeon HD 6770M — "Whistler"/Turks, Northern Islands (TeraScale 2), PCI id 1002:6740 Driver: radeon kernel module (NOT amdgpu — this chip is pre-GCN, so radeon is the only option) OS when diagnosed: Fedora Linux 44 (KDE Plasma), kernel 7.1.4, X11, EFI boot Date fixed: 2026-07-22

Symptom

After waking from suspend, the Plasma desktop shows large black-and-white "stair-step"

Keybase proof

I hereby claim:

I am mattbell87 on github.
I am mattbell87 (https://keybase.io/mattbell87) on keybase.
I have a public key ASA-J1e_FaU-dfkUv-CmkXW6L1AnDl-JzI541JezR5kLiQo

To claim this, I am signing this object:

Sometimes Windows wont let you open a port and there is no process using that port. Usually this is due to WinNat, you just need to restart it.

Open an administrator prompt (powershell/cmd) and:

net stop winnat
net start winnat

This example uses Docker to install a specific Python version

One liner version

Given the file /home/matt/mobilenetv2-7.onnx as an example replace /home/matt and mobilenetv2-7.onnx as needed.

docker run --rm -v /home/matt:/mnt python:3.9-buster bash -c "pip install onnx onnxruntime && python -m onnxruntime.tools.convert_onnx_models_to_ort /mnt/mobilenetv2-7.onnx"

	*PPD-Adobe: "4.3"
	*FormatVersion: "4.3"
	*FileVersion: "1.0"
	*LanguageVersion: English
	*LanguageEncoding: ISOLatin1
	*PCFileName: "P1005.PPD"
	*Manufacturer: "HP"
	*ModelName: "HP LaserJet P1005"
	*Product: "(HP LaserJet P1005)"
	*NickName: "HP LaserJet P1005 rastertoxqx"

	#!/bin/bash
	# Link this file to /usr/local/bin/<command-name>

	exec=$(basename $0)
	container="container"
	user="root"
	dockerCmdNonInteractive="docker exec -u $user $container"
	dockerCmd="docker exec -it -u $user $container"
	display="🫙 $user@$container:$($dockerCmdNonInteractive pwd)\$ $exec $*"

	services:
	cmfive:
	image: ghcr.io/2pisoftware/cmfive:develop
	environment:
	- TZ=Australia/Sydney
	- DB_HOST=mysql
	- DB_DATABASE=cmfive
	- DB_USERNAME=cmfive
	- DB_PASSWORD=cmfive
	- ENVIRONMENT=development

	#!/bin/sh
	services=$(docker compose config --services)
	for service in $services; do
	echo "Service: $service"
	container=$(docker-compose ps -q $service)
	if docker inspect $container --format='{{.State.Health.Status}}' >/dev/null 2>&1; then
	health=$(docker inspect --format='{{json .State.Health.Status}}' $container)
	if [ "$health" != "\"healthy\"" ]; then
	echo "CONTAINER IS NOT HEALTHY"
	echo "==== STATUS ===="

	# Run a react native app on docker
	#
	# Ensure you have enough space (>32GB) and plenty of CPU power if you're running in Codespaces
	#
	# 1. docker-compose up -d (or right click this file in VS code and choose Compose Up)
	# 2. Once started go to http://localhost:6080 (or right click the dev container and choose Open in Browser in VSCode). You should see the android phone starting up
	# 3. Log in to your container with `docker exec -it react-native-dev bash` (or right click the dev container and choose Attach Shell in VSCode)
	# 4. Run `npm run android` to start your app (can take quite a while the first time you do this)

	services: