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Frequently-asked questions
| Q: | What license is used for the program?
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| A: |
Hydrogen is distributed under the terms/conditions of the GNU General Public Licence
(didn't you alresy guess this?). You can read this licence at http://www.gnu.org/gpl.
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| Q: |
How I can build Hydrogen from sources?";
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| A: |
After you have downloaded and expanded tar.gz file, simply type:
cd libhydrogen-x.x.x
./configure
make
cd hydrogen-x.x.x
./configure
make
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| Q: |
How I install Hydrogen
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| A: |
SOURCES (you need to execute this as root):
make install
RPM:
rpm -ivh libhydrogen-x.x.x.rpm hydrogen-x.x.x.rpm
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| Q: |
Howcan I select the midi-in interface and the midi-channel to use my keyboard?
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| A: |
As of hydrogen 0.8.0 you can select the midi channel in the file->preferences->midi-system dialog. For selecting the midi-in interface, use alsa-patch-bay or aconnect.
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| Q: |
I'm getting lots of "QCustomEvent: Illegal type id" messages. What is going wrong?
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| A: |
Update to hydrogen 0.8.0 or 0.8.1 beta. However, those are not critical.
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| Q: |
My Pattern Editor has gone. How do I get it back?
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| A: |
You can display the pattern editor by double-clicking a pattern NAME in the song editor, or right-clicking a pattern name and selecting "edit".
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| Q: |
My Mixer Window and/or my song windows are gone. How do I get them back?
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| A: |
With the window->Show Mixer or Window->Show song-editor menu items.
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| Q: |
How can I tell hydrogen to use ALSA instad of OSS?
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| A: |
At the moment you can't. If you want to use ALSA, you must also use JACK (http://jackit.sf.net)
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| Q: |
I'm using Jack, how do I tell hydrogen to use a specific port?
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| A: |
As of hydrogen 0.8.0, simply edit following lines to your ~/.hydrogen/hydrogen.conf:
<jack_port_name_1>alsa_pcm:playback_x</jack_port_name_1>
<jack_port_name_2>alsa_pcm:playback_y</jack_port_name_2>
Replace "x" and "y" of with your desired playback channels
(e.g.: <jack_port_name_1>alsa_pcm:playback_1</jack_port_name_1> )
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| Q: |
I am running jack and when starting hydrogen I get some error messages?
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| A: |
You probably are running jack as root, which is needed for realtime priority.
For hydrogen (as for any other app) to be able to connect to jack, it must run as root, too.
Either use sudo(8) or run hydrogen setuid.
Remember, running apps as root is potentially dangerous.
If you are interested to run jack with realtime priority without beeing root, check:
http://jackit.sourceforge.net/docs/faq.php#a5
and http://www.tml.hut.fi/~tilmonen/givertcap/
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| Q: |
How can I set volumes for single beats?
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| A: |
In the pattern editor, select the instrument name, so that the whole row is selected and you will see vertical dark blue lines at the bottom of the pattern editor for each beat of that instrument.
This line represents the volume - you may rise or lower it with your mouse.";
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| Q: |
How do I load my own instruments?
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| A: |
In the mixer window press the "L" (Load) Button for the instrument you want to change. Then simply select your desired sample.
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| Q: |
I hear a funny click when playing though I haven't set a single beat yet!
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| A: |
This is called a metronome and you can disable it in the file->preferences dialog ;o) You can also adjust its volume there.
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