Problem with Anchor Alarm in Ubuntu 11.04

[vince7887]

Hello,

I have a problem with the anchor alarm in opencpn 2.5. When the alarm is running, no sound is coming out. Do you have an idea ? I'm using Ubuntu 11.04.

[jcividan]

I have the same exact problem. other apps do produce Sound. Thanks

[zeehag]

wow--folks can drag anchor and watch the lappy at same time>?? who is resetting anchor?? what are you gonna hit??? what is wrong with eyeballs doing the anchor watch??

[jcividan]

The problem is with AIS ALARMS they do not sound either.

[vince7887]

Nobody has an solution?

[idpnd]

This is most likely a problem with the ubuntu sound architecture.. haven't found a solution yet :P

[cagney]

This problem has buggered me to, so now was the time to do some digging.
OpenCPN uses "wxSound" that is based on Linux old sound standard OSS.

As from Ubuntu 10.10 the support for OSS is no longer compiled into the kernel.
Ubuntu even goes as far as to blacklist the oss kernel drivers in/etc/modprobe.d/alsa-base.conf, so no use installing the "oss-compat" package.

The Good News is that a simple workaround is available. Pulseaudio, supports OSS emulation with an app called "padsp", so instead of starting OpenCPN

$opencpn

use

$padsp opencpn

If you use to click an icon, change the link for the icon.
Tested on Ubuntu 11.04 64bit ans 10.10 32 bit.

Use this workaround, for now. I expect a more permanent solution down the line.

Thomas

[jcividan]

Yes it works!!

Thank you very much

[vince7887]

Hello cagney,

Thank you so much to give us a bit of you time for resolving this problem. But for me your answer doesn't work. When I type in a terminal the line code ($padsp opencpn), the program starts normally, but the anchor alarm doesn't sound more (?). And, in the terminal i can read this message : (opencpn:1970): Gdk-CRITICAL **: IA__gdk_window_get_origin: assertion `GDK_IS_WINDOW (window)' failed

Can I do something ? This fonction of anchor alarm would be helpful for me.

I use Ubuntu 11.04 (64 bits) and opencpn 2.5.0

Thank you for all,

Vincent

[cagney]

Originally Posted by vince7887

Hello cagney,

Thank you so much to give us a bit of you time for resolving this problem. But for me your answer doesn't work. When I type in a terminal the line code ($padsp opencpn), the program starts normally, but the anchor alarm doesn't sound more (?). And, in the terminal i can read this message : (opencpn:1970): Gdk-CRITICAL **: IA__gdk_window_get_origin: assertion `GDK_IS_WINDOW (window)' failed

Can I do something ? This fonction of anchor alarm would be helpful for me.

I use Ubuntu 11.04 (64 bits) and opencpn 2.5.0

Thank you for all,

Vincent

I have the same set up as you - Ubuntu 11.04 (64 bits) and opencpn 2.5.0. I get the anchor alarm OK, but then I run into other problems.
See http://www.cruisersforum.com/forums/...tml#post746065
The solution to this is clearly to use ALSA instead of OSS i OpenCPN.
I'm sure it will be fixed that way, now that it's obvious that the presently used Wx-widgets coding isn't enough.

Thomas

[vince7887]

I'm not sure to follow you. What is " Wx-widgets" ? Where can i switch for using "Alsa" instead Oss ? in the soud control panel of ubuntu ?

I'm using a eee pc 1001 px. The sound is working perfectly with others apps. I'm making a mistake in the procedure that you describe ?

Thank's for your help.

Vincent

[cagney]

Originally Posted by vince7887

I'm not sure to follow you. What is " Wx-widgets" ? Where can i switch for using "Alsa" instead Oss ? in the soud control panel of ubuntu ?

I'm using a eee pc 1001 px. The sound is working perfectly with others apps. I'm making a mistake in the procedure that you describe ?

Thank's for your help.

Vincent

No error from your side, and nothing you can do.

( Experienced Linux users that are up to recompiling the Linux kernel, can fix this, see, http://www.cruisersforum.com/forums/...tml#post743184 )

This must be fixed by the programmers. It is a bug in OpenCPN.

Thomas

[lboc]

Originally Posted by vince7887

Hello cagney,

Thank you so much to give us a bit of you time for resolving this problem. But for me your answer doesn't work. When I type in a terminal the line code ($padsp opencpn), the program starts normally, but the anchor alarm doesn't sound more (?). And, in the terminal i can read this message : (opencpn:1970): Gdk-CRITICAL **: IA__gdk_window_get_origin: assertion `GDK_IS_WINDOW (window)' failed

Can I do something ? This fonction of anchor alarm would be helpful for me.

I use Ubuntu 11.04 (64 bits) and opencpn 2.5.0

Thank you for all,

Vincent

Hi, I think you should skip the $ sign before padsp, it is meant to show the prompt only.
So just type:

padsp opencpn

In a terminal window.

(technically, using a dollar sign calls for the variable padsp which is empty so the effect is like just typing "opencpn")

[dacust]

Originally Posted by lboc

Hi, I think you should skip the $ sign before padsp, it is meant to show the prompt only.
So just type:

padsp opencpn

In a terminal window.

(technically, using a dollar sign calls for the variable padsp which is empty so the effect is like just typing "opencpn")

That's a pretty good first post ya made there, lboc. Welcome to the forum.

-dan

[idpnd]

padsp opencpn

Thanks Iboc - sadly doesnt work on this ubuntu machine, crashes sound..