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Jason DeRose
Works at System76
Lives in Longmont, Colorado, USA
2,531 followers|1,275,649 views
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Jason DeRose

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Anyone ever see anything like this? I'm working on an HD-Audio problem (Realtek ALC892). My theory is that those weird (and very not audio waveform looking) "woops" are the result of some kind of auto DC-offset correction. The woops come whenever I change the Mic Boost in alsamixer.

The problem is a very high-level of background noise when using a mic plugged into the microphone jack. My theory is that there is some "disconnected" source being included such that its circuit noise is getting auto-amplified up to 11 (if not 12), which is also why what is probably a tiny, expected DC-offset is pegging the dynamic range in the digital signal (till it gets auto-corrected). Much noise, no such signal.
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+Jason DeRose It /could/ still be hardware interference, if say, the WiFi/BT drivers are causing excessive power output through the antenna, for example.

How different is the waveform for the exact same time block, with the exact same activity, on Windows?
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Jason DeRose

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Y E S
 
+COSMOSonTV 
Share if you'll be ready for #cosmos   TONIGHT at 9/8c.
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Nope.Not.Ready.
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Jason DeRose

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Apologies that I didn't get this information out sooner, but, yes, Dmedia is affected by Heartbleed. To fix the problem, update your packages, and then force Dmedia to generate new user and machine certificates like this:

rm ~/.local/share/dmedia/user-1.json
rm ~/.local/share/dmedia/machine-1.json
restart dmedia
 
+Dmedia is vulnerable to the Heartbleed bug in OpenSSL.

You should immediately generate new Dmedia SSL keys, in case your private keys were compromised while your system was using a vulnerable version of OpenSSL.

In a nutshell, force Dmedia to generate new keys like this:

rm ~/.local/share/dmedia/user-1.json
rm ~/.local/share/dmedia/machine-1.json
restart dmedia

After which you'll have to re-peer your devices.
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Jason DeRose

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Really happy Python 3.4 got showcased in the release notes :)
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If you're interested in (and new to) the vector-graphics library cairo, you can attend my introductory talk "Zeichnen mit cairo" (talk will be held in German), which I will give at the CCC's Chaosdorf in Düsseldorf (Hüttenstraße 25) at the 18.6.2014 starting at 20:00. The date still has to be confirmed, but it's very likely to be on that day. This is taking place under the umbrella of the monthly meeting of the C++-Usergroup NRW.

I'll talk about cairo's hisotry and inception, famous areas of application, its concepts and operation, live coding/mini-tutorial, tips and tricks for performance and demos.
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Jason DeRose

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What do +Chris Fisher and +Matt Hartley think of Ubuntu 14.04 LTS? They reviewed the new release on our Galago UltraPro and the Bonobo Extreme this weekend in the latest episode of the Linux Action Show. 
"Ubuntu 14.04 Impresses. I could easily see myself switching to this desktop," -Chris Fisher, Linux Action Show
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Jason DeRose

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Hehehehehehe. Via +Carl Draper 
 
When holidays collide
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You can't make a rule against stupid.
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Today’s launch is targeting 3:25pm ET. The live launch webcast begins in T-60 min!
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If anyone wants to follow the gory details of what's changing in the +System76 Driver, I do my best to keep debian/changelog very informative.

Of course, the bzr commit messages and, most importantly, the actual source changes are the definitive record. But the changelog is still a (hopefully) enlightening summary :)
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Actually in 14.04 I just noticed there's a new "Bemo Network" connection type, what is it?
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In his circles
1,397 people
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Work
Occupation
Building tools for storytellers
Employment
  • System76
    Product Engineer, 2013 - present
  • Novacut Inc
    Lead Developer, 2010 - present
  • Red Hat Software
    Senior Developer, 2008 - 2010
  • Level 3 Communications
    Software Engineer, 2007 - 2008
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jderose
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Pythoneer on a mission
Introduction
I'm a Product Engineer at System76, makers of fine Ubuntu computers.

I'm also the lead developer for the Novacut collaborative video editor (think Google docs for video editing).

Novacut is built on Dmedia, a specialized distributed object store aimed at professional content creation. Dmedia is the foundation of Novacut's real-time collaboration, and can likewise be the foundation for similar apps.

If you'd like help adding Dmedia integration to an existing app, or building a new app atop the Dmedia platform, please don't hesitate to ask!
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Currently
Longmont, Colorado, USA
Previously
Portland, Oregon, USA - Bellingham, Washington, USA
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