TIL

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.builtin at /lib/modules/6.3.8-200.fc38.x86_64: No such file or directory depmod: WARNING: could not open modules.builtin.modinfo at /lib/modules/6.3.8-200.fc38.x86_64: No such file or directory vboxdrv.sh: Starting VirtualBox services. vboxdrv.sh: Building VirtualBox kernel modules. egrep: warning: egrep is obsolescent; using grep -E vboxdrv.sh: failed: Look at /var/log/vbox-setup.log to find out what went wrong. There were problems setting up VirtualBox. To re-start the set-up process, run /sbin/vboxconfig as root. If your system is using EFI Secure Boot you may need to sign the kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information. A look into /var/log/vbox-setup.log revealed an error along the lines of this one1: ...

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: ...

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/). But since the docs will most likely also end up being hosted on a version specific subpath of docs.octoprint.org, just using (host) absolute URLs would not work either and break. ...

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 .c instead of .cpp. And that caused all of this, a quick rename from sound_pressure_sensor.c to sound_pressure_sensor.cpp resolved the compilation error 🤦‍♀️ ...

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. Apparently the VirtualBox kernel driver triggers Intel’s IBT (indirect branch tracking). The solution is to disable that1 by passing ibt=off as a kernel parameter: ...

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. First of all export your game using the “Web” export template ...

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. It just happened again and because every single time now we’ve had to try to remember how to fix it, here’s a quick TIL to encourage my memory 😅 ...

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). But given that these days I primarily game on the Steamdeck, I needed to find a way to install Battle.net on my deck and also install individual launchers for the games. ...

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. Having to take care of the latter is something that has been annoying for a long time now, and during the preparation for yesterday’s release candidate I decided enough is enough and looked into improving my tooling a bit. In the end, I used Obsidian’s quite amazing Dataview plugin to query the information about the planned test scenarios from the checklist’s frontmatter, build the testrig command from that, then render all of this as a table, complete with some checkboxes for state logging during the tests and a copy button for the command. ...

I’m slowly but surely fixing all the issues I had after switching back to Linux as my main OS, so here’s another TIL 😉 My secondary monitor is a 24" DELL with a resolution of 1920x1200, so 16:10, instead of the more common 1080p and 16:9. In order to be able to connect all my three monitors to my laptop, I make use of both the laptop’s HDMI port as well as a USB-C dock that has 2 HDMI ports. The 4k main display is connected directly to the laptop’s HDMI port, secondary and tertiary display are connected to the dock. ...