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Dirk Hohndel
open source - scuba diving - tae kwon do
open source - scuba diving - tae kwon do

Dirk Hohndel's posts

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Wonderful trip to Palau with our friends at Fish'n Fins.
+Linus Torvalds

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Trying to be more consistent about making releases at a reasonable cadence... we haven't quite made it a science like +Linus Torvalds does with the Linux kernel, but we're getting better :-)
We are happy to announce the release of our latest update, Subsurface 4.6.4.

In the two months since our last release, we added a feature that a lot of users asked us about: the ability to quickly manually enter new dives with just depth and duration, without using the very nice, but sometimes a bit too time consuming graphical profile editor. We heard you - let us know what you think.

We also fixed quite a few bugs, improved the dive planner, improved import both from dive computers as well as other dive logs formats and dealt with minor issues here and there.
For all the details, please take a look at the full announcement below.

As always, binaries for Windows, Mac, generic Linux and a number of specific Linux distributions are available from

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Stepping it up with our support for open source and the Linux Foundation
VMware has increased its commitment to open source by becoming a Gold member of The Linux Foundation:

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Another small update - a few bug fixes but mostly improvements to the translations
The Subsurface development team proudly announces the release 4.6.2 of Subsurface. This update fixes a number of bugs and updates many of the translations. Details in the announcement below.
It's amazing to watch the work that our volunteer translators are doing - but we continue to look for more people who'd be willing to help out. If you run Subsurface in a language other than English and find things that are not translated (or incorrectly translated), why don't you reach out to us? The translations happen on a really easy to use website, and there is no commitment - whatever you'd like to translate helps.

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Our latest release is out. One area we really could use help in is Bluetooth LE support. The first few dive computers based on BTLE are showing up (including, for example, the beautiful Shearwater Perdix AI) and we need to add support for this to our code - yet none of the active developers seem to have experience with BTLE through Qt... help is always welcome...

My Linux VM was feeling really sluggish... what's going on?
Oh wow, I'm out of memory in a VM with 6GB of RAM... let's see who's the culprit, gotta be the browser.

total_vm of plasmashell is just over 1GB. klauncher, kded5, kwin_x11and kactivitymanage add another cool 1.6GB

Clearly time for a reboot but HOLY SMOKES that's nuts. Sure, I like the look and feel and everything, but when the OOM killer kicks in on a 6GB machine that is running a browser, Qt Creator and a few terminals, something is seriously off

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Thank you +Peter Adams for a great new profile picture that I can use (CC BY-NC-SA)... part of 

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Sharing this with on my personal account as well... we're always looking for more people to help us with the translations!
Are you an Italian/Polish/Czech/Estonian/Danish speaking diver? Or a native speaker of any of these languages who knows a diver? It looks like our translations could use some help!
Actually, if you are interested in getting engaged with Subsurface, regardless of the language(s) you speak... helping us with the translation is a wonderful way to do so.

Sign up at and request to join the subsurface team!

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It took us quite a while, but Subsurface-4.6 is out!
The Subsurface developer team is happy to announce that release 4.6 of the Subsurface dive log program has been released.
You will find many improvements to the user experience (including a fix for spurious errors saving to cloud storage, improvements to the Facebook integration, many improvements to the dive planner and a really cool new heatmap for visualization of tissue loading during a dive). Subsurface can now download data directly from a number of new dive computers (thanks to Jef and the rest of the libdivecomputer developers) and also import several new data formats.
And of course there are a whole lot of bugfixes.
Look at the full announcement below, which also includes links to the binaries for Windows, Mac, and Linux.

Anyone interested in two quadcopters?

Blade 350 QX with gimbal and better GPS antenna - in a nice box for carrying it around - about 2.5 years old
Parts built 350 size drone with an HKPilot flight controller - about 1.5 years old

Also a Frsky Taranis transmitter with Spectrum transmitter unit? And a couple of Frsky sensors (altitude, GPS)? - about 2 years old

I'm not flying them anymore and it seems like a waste. Ideally pick them up if you are local in Portland, but I'd consider shipping them...

Acquisition cost all in all around $2k. Available for a donation to the Oregon Food Bank (plus shipping cost if you aren't local)
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