The fix by using padsp --- $ padsp -n xgalaga xgalaga
It seems that a click sound played by the desktop system when xgalaga lunches
or the sounds of the other application like mpd or Audacious, or any sounds via
pulse audio or via directly ALSA, block(s) xgalaga's opening DSP /dev/dsp.
When xgalaga lunches from the desktop, the desktop system plays a click sound
for example "clicked.wav". And the sound uses alsa pcm via pulse audio.
Since alsa pcm is in use, xgalaga fails to open DSP /dev/dsp.
Xgalaga lunching from the desktop can play sounds in the condition 1 and 2;
1. Uncheck sounds for events in Sound Preferences
[System]->[Preferences]->[Sound]
2. No sound. --- no application makes sound. Not using audio player. So pulse
audio is not in use, and alsa pcm is free
Try in the terminal with/without audio player playing.
$ ( xgalaga -window & ); sleep 0.5 ; ps axfww -o tty,ppid,pid,uid,args | grep
'[C]OMMAND\|[x]galaga'
And also try
$ ( padsp xgalaga -window & ); sleep 0.5 ; ps fww -o tty,ppid,pid,uid,args -C
xgalaga -C xgal.sndsrv.oss
Even in the condition of other's sound, by using of padsp, xgalaga lunched from
desktop application menu can play sounds via pulse audio.
$ padsp -n xgalaga xgalaga
To make xgalaga use padsp from the desktop,
Right click [application]->[edit menu] and choose the luncher properties of
xgalaga.
Edit command field to "padsp -n xgalaga xgalaga" in luncher properties.
Or edit xgalaga.desktop in "/usr/share/applications/" or
"~/.local/share/applications/".
I append a patch. But it was edited only 1 line.('_^)/
I feel sorry that It is the end of desktop ver. of Hardy LTS to I find
this fix.
Anyway, it seems that padsp makes many applications playable that uses the OSS
(Open Sound System).
And it's only editting ".desktop" file to make use padsp.
I think this sound probrem is a kind of a packaging probrem.
I know there are users who do not use pluse audio. But it is not the default
setting. It is needed to install-and-work with no change the configulations. So
I think it is better to make using padsp default or take other better way.
But I think the providing seamless /dev/dsp emulation of pulse audio is the
better way than wrapping by padsp.
I haven't tested but osspd is seems the one.
** Patch added: "patch for xgalaga.desktop"
https://bugs.launchpad.net/ubuntu/+source/xgalaga/+bug/222779/+attachment/1934847/+files/xgalaga.desktop.patch
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https://bugs.launchpad.net/bugs/222779
Title:
XGalaga: Key pad and sound do not function on latest version of Hardy
Heron
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