LHS Show Notes #062


  • Introductions, chit chat, a bit about the Dayton Hamvention, Texas Linuxfest, and the Belton hamfest.
  • LHS will be at several events this summer:
    • SouthEast LinuxFest (SELF), June 10-12 in Spartanburg, SC. (Yes, I know, by the time you hear this episode, it's come and gone.)
    • Huntsville Hamfest August 20-21 in Huntsville, AL.
    • Ohio Linuxfest September 9-11 in Columbus, OH.
    • Stop by and say hello to Russ and Cheryl!
  • Richard may be attending the Texoma Hamarama October 21-22 in Ardmore, OK.
  • Russ tells us about the sewer failure at Dayton. Only two restrooms in Hara were working Saturday afternoon. Apparently it was fixed by Saturday evening.

Topic: PulseAudio

  • Richard's son is trying to start his own computer repair business and recently he received a call from Misha who wanted him to fix a sound issue on her Sony Vaio, which dual-boots Windows 7 and Ubuntu 11.04. Sound worked fine in Windows, but not in Ubuntu, and she preferred using Ubuntu. After working with the machine for a while, he figured out that PulseAudio was the problem, and replacing it with ALSA fixed it.
  • While researching the problem, Richard discovered PulseAudio problems exist on more than just the Sony Vaio. He also found PulseAudio problems with Ubuntu, Fedora, Open Suse 11 or higher, Arch Linux, Zen, and Sabayon, and with both Gnome and KDE desktops.
  • Two sites in particular were helpful:
  • Russ and Richard discuss Linux audio problems, and the current state of PulseAudio, particularly with WINE. Russ notes that he's had no sound problems under Linux Mint.
  • Russ describes various ways to troubleshoot PulseAudio issues on Linux.
  • In Gnome, right-click on the speaker icon and select sound preferences. From here you can examine the hardware, choose a sound profile, configure your inputs and outputs, and see which applications are using PulseAudio.
  • There are a variety of utilities useful for debugging PulseAudio problems:
    • paman (PulseAudio Manager Utility). Install it with the command "apt-get install paman". It tells you a lot of information about PulseAudio, including "sinks" and "sources". You can also use it to set volume levels with greater control than with the desktop audio manager.
    • paprefs (PulseAudio Preferences Panel) Install it with the command "apt-get install paprefs". Allows you to perform advanced functions such as connecting PulseAudio servers together, send sound from one server to another, create virtual sound devices, etc.
    • pavucontrol (PulseAudio Volume Control) Install it with the command "apt-get install pavucontrol". Allows you to see every application that accesses PulseAudio, set volume levels per channel, and other configuration settings.
    • pavumeter (PulseAudio VU Meter) Install it with the command "apt-get install pavumeter". Creates a VU Meter window that displays your audio levels.
    • padsp, pamon Install with the command "apt-get install pulseaudio-utils". pamon will allow you to capture the bytes of audio data. padsp allows you to pipe the audio from an application that does not normally support PulseAudio, into PulseAudio.
    • Remember, you can use the "man" command for help on any of these commands. For example, in a terminal type "man padsp" for help on the padsp utility.
  • Check out Ted's sound card programs for ham radio. They are all now PulseAudio compatible.

Contact Info:

  • Contact Richard at kb5jbv@gmail.com, Russ at k5tux@lhspodcast.info, or both at the same time at info@lhspodcast.info.
  • Listen to the live stream every other Tuesday at 8:00pm Central time. Check the LHS web site for dates.
  • Leave us a voice mail at 417-200-4811, or record an introduction to the podcast.
  • Sign up for the LHS mailing list.
  • Sign up for the MAGNetcon mailing list.
  • LHS merchandise is available at the SHOP! link on Web site. Check out the Badgerwear or buy one of the other LHS-branded items at PrintFection.com/lhs or Cafe Press. Thanks!
  • Thanks to Dave from Gamma Leonis for the theme music.

LHS Episode #052: Amateur Fantasies

Hello, podcast listeners! It has been an extra week that you've had to wait for our landmark episode 50 to be released. I (Russ)  had planned to do an episode from his hotel room in San Jose. Unfortunately, the network there was so bad it was impossible to record so everything was pushed back.

In this episode, we talk about life, love and amateur radio. OK, not really. But we touch on a number of interesting topics including the necessity of logging in amateur radio, theoretical nonsense like Internet via Moonbounce and, thanks to a couple of missives from AD7MI, we wax philosophical on our ideal ham shacks--computers running Linux included of course.

Thank you for being a listener of our show. If you're new: Welcome! Please tell everyone you know where they can find us. And keep fighting the good fight.

73 de The LHS Guys

LHS Episode #046: The TuxTel Conglomerate

Episode #044 of Linux in the Ham Shack makes its debut, and even on time. We're still trying to catch up on a little bit of a backlog so this episode is mostly feedback from listeners. We touch on a variety of topics including packet radio, the AX.25 kernel driver for TNCs, the importance of Linux and Open Source, Android and emerging Linux markets, and much, much more.

Thanks for taking the time to download us and being an ever-faithful listener. We would be nothing without you and we want to let you know that we appreciate each and every pair of ears that hears us every fortnight. Don't forget to send us your feedback, whether it be as a comment on the Web site, a voice mail submitted via our toll-free hot-line or an e-mail to one or both of us. Also, please don't forget about making donations or buying some of our LHS merchandise if you have the wherewithal to do so. Enjoy our current offering and we'll be back live in a week for more rowdy fun.

73 de The LHS Guys

Episode #004 Slightly Delayed

Hi, everyone. I'd just like to let you know that because I was in California for nine days last week, the recording of Episode #004 was put off for a little bit. We managed to get everything recorded last night, but as I went to edit the audio, it turns out there's a lot of crackling. I'm not sure where it came from, but I'm guessing the machine I was using to do the recording on (a different one for this episode) wasn't up to the task. So I'll apologize now for the poor audio quality, and know that the next episode will sound much better. I'm not sure I can get the editing done tonight, but if I can I will. There will definitely be an episode posted by Friday sometime. Thanks for listening and please keep the feedback coming.

73 de Russ, K5TUX