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by rpural
Wed Feb 11, 2015 6:04 pm
Forum: Troubleshooting
Topic: Odd constant square in upper right of screen...
Replies: 13
Views: 18560

Re: Odd constant square in upper right of screen...

No; The system runs perfectly fine, but just has this square in the upper right.
by rpural
Wed Feb 11, 2015 4:44 pm
Forum: Troubleshooting
Topic: Odd constant square in upper right of screen...
Replies: 13
Views: 18560

Odd constant square in upper right of screen...

I got my Raspberry Pi 2B's, and built microSD cards for them, and have run both. Performance is great, and everything is as expected... Except that there is a small square near the upper right of the screen on both that is colored red/yellow/blue/green, with the colors fading into the ones next to t...
by rpural
Mon Feb 10, 2014 2:36 pm
Forum: General discussion
Topic: Incorrect "Tip of the Day"
Replies: 2
Views: 672

Incorrect "Tip of the Day"

Tip of the day: The command “sudo amixer -cset numid=3 1″ will send sound to the headphone socket. Use “sudo amixer numid=3 2″ to return it to HDMI. Saw this "Tip of the Day", and noticed that it was incorrect; wasn't sure who to tell or how to get the information to them. cset is a command, not a ...
by rpural
Tue Aug 27, 2013 2:25 pm
Forum: Raspbian
Topic: Problem with Raspian.org?
Replies: 5
Views: 799

Re: Problem with Raspian.org?

It appears to be back up and running again now. I don't know if it was something at the other end, or the apt-get update (I run the apt-get update via cron every morning, so it should have been current anyway).
by rpural
Tue Aug 27, 2013 1:40 pm
Forum: Raspbian
Topic: Problem with Raspian.org?
Replies: 5
Views: 799

Problem with Raspian.org?

I was trying to install some packages this morning (Aug 27), and got 404 errors on all the mirrordirector.raspian.org pages. I tried to ping raspian.org, and get a 100% packet loss. www.raspian.org gives me a goDaddy.com page offering to sell me the domain.

What's happened?!?
by rpural
Fri Jun 14, 2013 8:55 pm
Forum: Raspbian
Topic: 2013-05-25 Raspian HF image doesn't work...
Replies: 5
Views: 1325

Re: 2013-05-25 Raspian HF image doesn't work...

Turns out you were right... After trying a different SD Card, I had no problem, and Raspian came right up. Evidently, the SD Card has failed. :( After trying almost every combination I could think of, I happened across a spare card here of the same size, and it worked right out of the gate. Sorry fo...
by rpural
Fri Jun 14, 2013 5:34 pm
Forum: Raspbian
Topic: 2013-05-25 Raspian HF image doesn't work...
Replies: 5
Views: 1325

2013-05-25 Raspian HF image doesn't work...

I downloaded the 2013-05-25 Raspian HF image from the website downloads page (several times now), unzipped it, and burned it to an SD Card (also several times), and I've tried the new image in two different Raspberry Pi machines. It would appear that the image does not work. It begins to boot, and t...
by rpural
Mon Jun 03, 2013 4:35 pm
Forum: Bare metal, Assembly language
Topic: ARM assembler tutorial for Raspberry Pi
Replies: 25
Views: 19931

Re: ARM assembler tutorial for Raspberry Pi

The link referenced here (and indeed, the entire posterous domain) seem to have disappeared. Has this tutorial been brought back up anywhere? I am starting a tutorial on ARM assembler language on the raspberry pi. It is aimed at the complete beginner, although you will have to have got your pi up an...
by rpural
Wed Mar 13, 2013 5:44 pm
Forum: Java
Topic: This may be a stupid question: Where is javac??
Replies: 11
Views: 3247

Re: This may be a stupid question: Where is javac??

If you want to be picky, you can't install anything on a computer at all. You can only run programs. You knew exactly what I meant, but chose to be disagreeable instead of helpful. I wasn't going to go through the whole 'installed Java on 2013-02 Debian Wheesy running on the Raspberry Pi' as that wo...
by rpural
Tue Mar 12, 2013 12:48 am
Forum: Java
Topic: This may be a stupid question: Where is javac??
Replies: 11
Views: 3247

Re: This may be a stupid question: Where is javac??

Installing the JFK did the trick.

Spid: I don't know why you chose to be so insulting; it's not appreciated.

Thanks to the others for your help.
by rpural
Mon Mar 04, 2013 5:38 pm
Forum: Java
Topic: This may be a stupid question: Where is javac??
Replies: 11
Views: 3247

This may be a stupid question: Where is javac??

I have Java installed on my Pi; when I type java -version I get "OpenJDK Runtime Environment (IcedTea6 1.12.1) (6b27-1.12.1+rp1) All well and good... But if I type "javac programname", I get "bash: javac: command not found". Was the compiler not included in the JDK? And, if not, then what package do...
by rpural
Fri Mar 01, 2013 3:17 pm
Forum: Troubleshooting
Topic: My first Pi just died...
Replies: 5
Views: 884

Re: My first Pi just died...

I'll try to check the voltage, but I tried several power supplies, both via the micro-USB and the USB connector. Plus, all my power supplies work with other Pi's (I have three).
by rpural
Fri Mar 01, 2013 12:47 pm
Forum: Troubleshooting
Topic: My first Pi just died...
Replies: 5
Views: 884

My first Pi just died...

The Raspberry Pi that I ordered in the original mad rush has just kicked the bucket, after almost a year of continuous use. I don't know what the problem is, but it runs through its initial boot, and when it gets to the point of loading Linux, it just reboots. Again, and again, and again.... :o I've...
by rpural
Thu Sep 13, 2012 11:33 am
Forum: Advanced users
Topic: Multiple RasPi Sync'd Playback
Replies: 8
Views: 6201

Re: Multiple RasPi Sync'd Playback

Why not create a "Master" program to run on your main machine, and "slave" program to run on the other two, and you could talk between them in one of two ways. The first and more traditional way would be to send a TCP or UDP message from the master to the slaves when you wanted them to start, and th...
by rpural
Tue Aug 14, 2012 11:30 am
Forum: Python
Topic: Using only Python 3
Replies: 8
Views: 2865

Re: Using only Python 3

I haven't tried this, but you have the perfect "test bed" right in front of you: Set up an additional SD Card with both Pythons installed, test Python3, and then uninstall Python 2.7 and test again. If things fail, it was a scratch install in the first place. As for uninstalling, do a "man apt-get"....
by rpural
Fri Aug 10, 2012 11:41 am
Forum: Raspbian
Topic: A little help required
Replies: 10
Views: 1678

Re: A little help required

There's more to a user than just a name. Do an "ls -al /home/pi" to see the hidden files there. I'm not sitting at mine, but a .profile or .bashrc may contain commands that set your $PATH variable which controls where you find programs, and not having this set would be why you aren't finding startx....
by rpural
Fri Jul 27, 2012 7:59 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO and a lowly switch...
Replies: 5
Views: 2413

Re: GPIO and a lowly switch...

+3V3 ----2k_Resistor----- N1 ----SWITCH----GND. In this drawing 'N1' is just a label for a node or circuit connection which goes to the GPIO input pin. The voltage at that node N1 is 3V3 (when not pressed ) and about 0V when the switch is pressed (about 1.6 mA current flows through the resistor, if...
by rpural
Fri Jul 27, 2012 2:49 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO and a lowly switch...
Replies: 5
Views: 2413

Re: GPIO and a lowly switch...

I haven't been able to find a switch like your photo, but I soldered leads on to a small switch similar to this one. I've tested it with a meter, and I'm fairly sure I have it mounted correctly (i.e. not 90 degrees out of phase). I'll post a photo tomorrow, and try a few more things, per your notes.
by rpural
Thu Jul 26, 2012 8:42 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO and a lowly switch...
Replies: 5
Views: 2413

GPIO and a lowly switch...

I thought I was getting a handle on the whole GPIO thing, starting off with the two articles in the MagPi magazine and trying to apply and extend the logic from there, but I'm off base somewhere, and need someone with some electronics experience to bump me back on track... I get that the LED configu...
by rpural
Wed Jul 18, 2012 3:45 pm
Forum: General programming discussion
Topic: Fortran editor
Replies: 3
Views: 1928

Re: Fortran editor

As far as editing, choose your favorite editor; any should work.

To get the compiler, at a command prompt, type the command:

sudo apt-get install gfortran

This will install the FORTRAN-95 compiler. Your other choice would be FORTRAN-77, but 95 will be closer to your FORTRAN-90, I think.
by rpural
Tue Jul 10, 2012 1:47 pm
Forum: General discussion
Topic: Powered hub concern...
Replies: 4
Views: 1731

Powered hub concern...

I bought a powered USB hub for my Pi, but when I plug it in, the power light on the Pi comes on. At this point, plugging in the "real" power connector does not boot up the Pi. If I unplug both, then plug in the correct power cable, wait for the Pi to get a running start, then plug in the hub, it wor...
by rpural
Mon Apr 23, 2012 1:49 pm
Forum: Beginners
Topic: Is normal Debian a good start if you have no Pi yet?
Replies: 9
Views: 4789

Re: Is normal Debian a good start if you have no Pi yet?

<t>In general, Linux is Linux, and Debian is Debian, so what you learn on the machine you have should transfer directly to the R-Pi without any "re-education" at all. I use Linux daily on both Intel servers and IBM zSeries mainframes, and there's really no difference from a user's standpoint.<br/> <...
by rpural
Thu Mar 29, 2012 2:32 pm
Forum: Pidora / Fedora
Topic: Fedora ARM on Raspberry Pi
Replies: 266
Views: 118550

Re: Fedora ARM on Raspberry Pi

<t>Chris Rowland said: <br/> <br/> <br/> The other problem I saw was that the GUI didn't seem to get any keyboard input.<br/> <br/> <br/> <br/> I wouldn't think that was a pervasive problem though, because the people doing the port would have seen it and not released it, or would have said something...
by rpural
Tue Mar 27, 2012 10:46 am
Forum: Pidora / Fedora
Topic: Fedora ARM on Raspberry Pi
Replies: 266
Views: 118550

Re: Fedora ARM on Raspberry Pi

<t>Liberty said: <br/> <br/> <br/> Farnell pulled the link to the Fedora image.  What are the issues? Is Fedora usable at  all? Should we wait untill a new image is available?<br/> <br/> <br/> <br/> I think the issue was that the initial Fedora boot requests that you change the account's passwords, ...
by rpural
Wed Mar 21, 2012 7:30 pm
Forum: Pidora / Fedora
Topic: Fedora ARM on Raspberry Pi
Replies: 266
Views: 118550

Re: Fedora ARM on Raspberry Pi

<t>spennig said: <br/> <br/> <br/> Explains why I have /etc/rc.d/fakeclock in my (arch) /etc/rc.d, for the times when network / ntpd is unavailable, no doubt easily translatable to other distros:<br/> <br/> <br/> My "first blush" attempt at this (not having a Ras-Pi handy to try it on):<br/> <br/> c...

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