How to fix GRUB after a SteamOS update

My partner just ran into an issue after updating his SteamDeck to the latest SteamOS version (3.4.x to 3.5.7). He has a dual boot setup running using rEFInd, and while that survived the OS update just fine, when he wanted to return to SteamOS after a quick stint in Windows today, he was greeted by a GRUB boot menu. Detective foosel to the rescue. Attempting to boot the SteamOS entry in grub resulted in an error like this (with another device UUID):...

November 25, 2023 · 2 min

How to fix VirtualBox on Fedora 38 with Kernel 6.4.10+ by adding a missing include

I recently did a software update on my laptop running Fedora 38, and that also brought in a kernel update. Starting my Win10 VirtualBox VM afterwards no longer worked as it needed the kernel module to be recompiled. However, that failed: $ sudo /sbin/vboxconfig [sudo] password for gina: vboxdrv.sh: Stopping VirtualBox services. depmod: WARNING: could not open modules.order at /lib/modules/6.3.8-200.fc38.x86_64: No such file or directory depmod: WARNING: could not open modules....

September 7, 2023 · 2 min

How to monitor network traffic on my USG via Wireshark

I’m currently trying to figure out some internal network issues1 and for that need to monitor the traffic of a specific device on my network. I’m using a Unifi USG as my router (behind the ISP’s Fritzbox that I consider hostile since it’s not mine). I found this post on reddit that explains how to capture traffic on the USG via tcpdump and send it through the SSH session to Wireshark on my laptop:...

August 28, 2023 · 2 min

How to make MkDocs support site_url relative URLs

I’m currently finally back on converting the OctoPrint docs to using Markdown and MkDocs. Since I have some images in the docs that I want to be able to reference without having to use relative URLs (../../../../images/), especially since that would tie things in OctoPrint’s source tree structure too close to things in its documentation tree structure that might or might not end up being in a different repository in the future, I needed a way to use absolute URLs here (/images/)....

July 27, 2023 · Updated July 28, 2023 · 2 min

Why ESPHome might fail compiling a custom component with 'fatal error: string: No such file or directory'

I just spent several hours trying to figure out why ESPHome refused to compile a custom component I was working on. The error message I got was Compiling .pioenvs/datenzwerg-sleepy/src/esphome/components/sound_pressure/sound_pressure_sensor.c.o In file included from src/esphome/components/sound_pressure/sound_pressure_sensor.h:3, from src/esphome/components/sound_pressure/sound_pressure_sensor.c:1: src/esphome/core/component.h:3:10: fatal error: string: No such file or directory 3 | #include <string> | ^~~~~~~~ compilation terminated. Compiling .pioenvs/datenzwerg-sleepy/src/main.cpp.o *** [.pioenvs/datenzwerg-sleepy/src/esphome/components/sound_pressure/sound_pressure_sensor.c.o] Error 1 Other external and internal components compiled just fine, so that was quite a head scratcher, until I just finally noticed something in my source tree: my custom component’s source file had the file ending ....

July 14, 2023 · 1 min

How to fix VirtualBox on Fedora 38 with Kernel 6.3.5 by disabling IBT

For accounting and some windows only software (👋 Affinity Designer) I have a Windows 10 VM running in VirtualBox on my Framework running Fedora 38. Apparently I got a kernel update recently and as of this morning the VM refused to start. It just hung, and a look into journalctl showed something like this: Jun 13 10:23:50 draper kernel: traps: Missing ENDBR: 0xffff9b688c308f30 After some searching I came across this thread on the VirtualBox forums which explained the issue and also includes the solution....

June 13, 2023 · 1 min

How to export a Godot 4 game to run on the web on itch.io

On the Go Godot Jam 4 Discord I just saw some people having issues with how to get HTML5 exports from Godot 4 to work on itch.io, and since I just had to do this for my own game submission to the jam as well I decided to jot my steps down here (and on the Discord too) as it seems to be a bit of a pain for people....

May 14, 2023 · 1 min

How to make the Home Assistant app sync properly under iOS

While I’m strongly rooted in the Android camp, my partner has an iPhone, and on what seems to be every iOS update, the Home Assistant app installed on his phone stops syncing in the background. That wouldn’t be so bad if a lot of the home automations didn’t factor in presence status which gets synced through that, so this has been a source of minor annoyance whenever his status refused to mirror his presence or absence....

April 30, 2023 · 1 min

How to add Battle.net games to the Steamdeck

Update 2023-06-07: It turns out that these days, the by far easiest way to get Battle.net on the SteamDeck is using NonSteamLaunchers-On-Steam-Deck, as I recently saw on Gaming On Linux. I haven’t gotten a chance to try this myself yet, but it certainly looks very much straight forward, albeit not featuring individual game entries in Steam. For your quick Diablo fix, it should hopefully be just fine though. Battle.net is currently having a spring sale and I’ve been eyeing Diablo II: Resurrected for a while now, so I jumped on the chance (and while at it also got StarCraft Remastered)....

April 15, 2023 · Updated June 7, 2023 · 3 min

How to use Obsidian's Dataview plugin to visualize frontmatter

For every OctoPrint release I run through several update tests: I flash a specific OctoPi version, push it to a specific OctoPrint version, configure the release channel, then see if updating to the newest release (candidate) works fine. I use my testrig and its automation scripts for that and usually go through something between 5 and 10 separate scenarios. So far all of these scenarios were noted down as a Markdown table in my release checklist that these days I prepare in my Obsidian vault, including manually adjusting the testrig commands to match the scenario....

April 14, 2023 · 4 min