Author: digitaleagle

Gpsd: Fixing for Ubuntu

digitaleagle gpsd, How To, Install Help, Uncategorized 1 Comment

I have an LT-20 Delorme Earthmate GPS.  It may not be the best GPS, but it gets the job done.  Getting it to work in Ubuntu was no easy feat.

I had to fix a bug in a cypress module.  I followed the instructions from here.

To get the kernel version, I ran:

uname -r

Then, to install the kernel source, I ran:

sudo apt-get install linux-source-2.6.24

Then, I changed directories into the installation directory and unzipped the source:

cd /usr/src
sudo tar -xvf linux-source-2.6.24.tar.bz2

Then, I copied the two files:

cd linux-source-2.6.24/drivers/usb/serial/
sudo mkdir /usr/src/modules
sudo cp cypress_m8.h cypress_m8.c /usr/src/modules/

Next, I created the make file (note that I have installed gvim.  I saw a note saying that they had problems using the gedit text editor):

cd /usr/src/modules
sudo gvim Makefile

And, I pasted these lines into the Makefile:

obj-m := cypress_m8.o
KDIR := /lib/modules/

$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules

Then, I edited cypress_m8.c and commented out line 408.  The original instructions have more detail on this.  I thought the line number might be different, but it was the same as the original instructions.

When running make (sudo make) I had trouble with “make: Nothing to be done for `default’.” message.  I just opened the file and deleted and readded the tab in front of the last line.  Then, it ran fine.

Then, I ran the command:

sudo install -m 644 cypress_m8.ko /lib/modules/`uname -r`/kernel/drivers/usb/serial/cypress_m8.ko
sudo depmod -a

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Convert Youtube Videos

digitaleagle ffmpeg, Uncategorized Leave a comment

I found this command that successfully strips the audio into a wav file:

ffmpeg -i Blessed_Be_Your_Name.flv -vn -acodec pcm_s16le \
   -ar 44100 -ac 2 Blessed_Be_Your_Name.wav

Here is the same command that includes the video that will play in Window’s Media Player:

ffmpeg -i Blessed_Be_Your_Name.flv -vcodec msmpeg4v2 -acodec pcm_s16le \
   -ar 44100 -ac 2 Blessed_Be_Your_Name.avi

I was able to use this command to convert an flv file from a downloaded Google Tech talk to an mp4 file that I could play with mplayer in Linux:

ffmpeg -i Using_bluemail_to_renew_the_design_and_study_of_enterprise_email.flv \
    -vcodec xvid -acodec pcm_s16le -ar 44100 -ac 2 \
    Using_bluemail_to_renew_the_design_and_study_of_enterprise_email.mp4

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Thunderbird

digitaleagle Email, Install Help, Thunderbird, Uncategorized Leave a comment

Well, work demands are forcing me to begin to use a fat client for my mail.  Up until now, I have been using GMail successfully.  So, I am choosing Thunderbird.

Here is what I like about GMail:

  • I can access GMail from any computer (I used to work on multiple computers depending on the client/day of the week)
  • I can manage multiple email addresses (Each client was giving me an email address with their domain name)
  • I like the GMail interface
    • threads instead of messages
    • labels
    • Ability to type the name of a person in the to box

But, there were a few features that I needed that forced me to switch to Thunderbird:

  • HTML Signatures (or at least formatting)
  • Different signature for each email account
  • Use a third party SMTP server — sending through GMail leaves an “on behalf of” message even if you choose to send with another email address.

I have started with two extensions that I thought were helpful:

One of the frustrations that I found was that when I replied to a message, it would put the quoted message above my reply.  Most email programs place the original programs below the new message.  I found a thread that explains you can change this in the Account Settings, Composition and Addressing settings.

The signature is in the Account Settings as well.  It is on the main page for each account.  I created an HTML file in my home directory and attached it to account.

Zindus was easy to configure.  You can access the setings in Tools > Zindus.  I just entered my GMail account information and I was off.  I did have an issue with duplicate contacts because I had already sent a couple of emails to people already in my GMail contact list.  Thunderbird automatically adds to your contact list people to whom you send an email.  I just deleted those contacts, and everything synced fine.

The Lightning settings were in the Preferences — that is in the Edit menu for Linux and Tools menu for Windows.

The Provider for Google Calendar was a little more difficult to figure out.  I finally found some instructions on the wiki.  I had to open the Google Calendar web interface.  Then, if you click settings on the calendar list, you get your list of calendars.  Next, click on the link for your specific calendar that you want in Thunderbird.  At the bottom of the settings list, you will find the XML links.  I right clicked on the XML button for the Calendar address and selected Copy Link Location.  Once I had the link copied, I went to Thunderbird.  First, I had to click on the Calendar button on the lower left hand corner of the screen.  Then, I could choose File > New > Calendar.  I chose a calendar on the Network.  Next, I chose a Google calendar and pasted the XML link into the Location.  Then, it asked me to log into the Google account.  Finally, it asked for a name/description for the calendar.

Proprietary Olympics

digitaleagle Interesting Articles, Moonlight, News, Uncategorized Leave a comment

I got the great idea that we would try to watch the Olympics online last night.  But, I had to reboot to Windows!

WindowsOnlyOlympics by you.

The problem is that NBC used a tool called Silverlight to broadcast the video.  Currently, the version of Silverlight does not work on Linux.

I attempted to download Moonlight, the Linux version of Silverlight. but it did not help.  The download page says that they do have an experimental version 2, but I think this note explains why it still does not work: “Note: These are currently built without multimedia support. No video or mp3 playback is enabled on these binaries.”

I tried to do some quick searches to see if there was a way to recompile or enable Moonlight to playback video, but I did not find anything.

I did find many other people complaining about Microsoft though.  New York times wrote an article called Olympics Online, With a Hook.  My search also brought this article up a few times: Linux Users on NBC’s Olympic Videos: We Don’t Get No Respect.

I found another article, Ok, I admit it. I love NBCOlympics.com! Now go make it work on Linux!, where the author makes this quote: “Now, one could get all huffy and puffy and blame Microsoft on this state of affairs, but in this case, I have to lay this problem strictly at the feet of the Open Source community.”  I have to disagree!  If I write a website, I have to make sure that I use tools and code that will work with my audience’s computers.  It would be ridiculous for me to write and test my website only for the Firefox browser or only Safari.  If Microsoft really wants Silverlight to be a success, I think they should donate the resources necessary to the Open Source effort.  Obviously, not that many open source developers feel that we need another Flash.

Anyway, I wish I had a good answer for how I made it work, but all I can say for now is we have to use Windows.

XRandr

digitaleagle Desktop, Laptop, Uncategorized, XRandr 1 Comment

I found that the xrandr features did not work with my NVidia driver in my old laptop.  I had to use the nvidia-settings tool, which worked with shortcomings.  But, my new laptop has an Intel video card.  The xrandr works with it.

Here are the commands that are working for me:

switching to dual monitors

xrandr --output VGA --auto --output LVDS --auto --right-of VGA

What did not work:

  • Leaves a black section on three quarters of the bottom of my laptop LCD panel.
  • only puts the applications menu and application switcher on the external Monitor — I would rather it be on the LCD panel
  • Only displays the monitor at 1024×768 @60hz.  I need it higher than 60hz for the flicker.

switching back to a single monitor

xrandr  --output VGA --off

What did not work:

  • did not move my windows back to the center, may have been because it thought they were on the left screen.

Changes to xorg.conf

I had to add the virtual setting in the Screen section.  Also, I had to add the mode to make the monitor use a 85hz instead of 60hz.

What did not work:

  • I have to start XWindows with the external monitor unplugged.  Otherwise, the laptop uses the 1024×768 setting from the monitor for the laptop screen, which is normally 1440×900.

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Javascript Libraries Via Google

digitaleagle GreaseMonkey, jQuery, Uncategorized Leave a comment

I just found some links about using Javascript hosted by Google:

I had been wanting to use jQuery with GreaseMonkey, but it seems to require that you have a web-accessible copy of jQuery.  I didn’t want to use other people’s bandwidth but wasn’t sure how else to do it.  Here are the instructions:

Hopefully, I can post an example piece of code soon on how to put the two together, but I am not quite there yet.  I hope the links help for now.

Troubleshooting: StayOnline Connections

digitaleagle Fedora, Troubleshooting, Uncategorized Leave a comment

While staying at a hotel, I had trouble connecting to https web sites.  Basically, I couldn’t log into anything: email, blogging, etc.  The hotel where I was staying had a company called StayOnline managing their network.

First, figuring out what network to connect to was rather confusing.  The card in the room said to connect to the SSID called “stayonline”.  But, that network did not exist.  Instead the right one was called “etwireless”.  When I called the support line, they answered LodgeNet.

Here is what I noticed:

  • I could connect to any website that did not use SSL — “http” only
  • If I rebooted to Windows, I had no problems.
  • In Fedora 9, when I went to any “https” it would just sit and spin.  The connection would eventually time out.

The solution is to disable TCP Window Scaling.  Run this command as root:

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

I found this information from this post:

SSL Problems with StayOnline Hotel Internet Providers

The post mentions that they did not support Linux.  I have to give them credit.  When I told them that I have Linux, they did not turn me away.  I was a little perterbed that they did not know the solution.  This post has been out there since February.  It would be even nicer if they could fix the problem so that Linux user’s don’t have to worry about it.

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