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<title>QMidiPlayer Help</title>
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<ul>
<li><a href="index.html">Overview</a></li>
<li><a href="mainwindow.html">Main Window</a></li>
<li><a href="channeldialog.html">Channels Dialog</a></li>
<li><a href="channeleditor.html">Channel Editor</a></li>
<li><a href="plistdialog.html">Playlist</a></li>
<li><a href="efxdialog.html">Effects</a></li>
<li><a href="optionsdialog.html">Settings</a></li>
<li><a href="visualization.html">Visualization</a></li>
<li><a href="cmdargs.html">Commandline arguments</a></li>
<li><a class="active" href="troubleshooting.html">Troubleshooting</a></li>
<li><a href="miscellaneous.html">Miscellaneous</a></li>
<li><a href="version.html">Version Info.</a></li>
<li><a href="license.html">License</a></li>
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If troubleshooting cannot solve your problem, please don't hesitate to report an issue.
<h3>1. I can't hear anything!</h3>
<p>
<ol>
<li>Check current audio driver in the option dialog. Do not use an audio driver
that is not installed on your system.</li>
<li>If no soundfont is loaded, the internal synthesizer won't make any sound...</li>
<li>Check audio driver/buffer settings in the synth section.</li>
<li>Check if your midi file is valid/having correct bank selecting method<s>/having zero volume</s>.</li>
</ol>
</p>
<h3>2. The playback is intermittent.</h3>
<p>
Try increasing audio buffer size and/or audio buffer count in synth options.
</p>
<h3>3. MIDI timing is messed up.</h3>
<p>
This is a known issue under Windows. Try decreasing audio buffer size and
increasing audio buffer count.
</p>
<h3>4. Some files cannot be played.</h3>
<h3>5. Some soundfonts cannot be loaded.</h3>
<p>
Files names with characters unsupported by the system locale
won't load correctly in Windows. This is a known issue.
</p>
<h3>6. Sound is distorted.</h3>
<p>
Try reducing the master volume.
</p>
<h3>7. Bank selecting is incorrect for the internal synth.</h3>
<p>
Change default midi mapping if necessary.
</p>
<h3>8. Bank selecting is incorrect for external devices.</h3>
<p>
Bank selecting to external devices is sent in raw format. The midi
file may be incompatible with your device.
</p>
<h3>9. 3D visualization is upsidedown/rotated/black/blinking.</h3>
<p>
For those who see a rotated and blinking display, try setting
Visualization-Video/Multisampling to 1 or above. If that doesn't
solve your problem or you see nothing at all, please send me more
details about your problem (graphics card, drivers etc.).
</p>
<p>
Devices/drivers reported to have this issue:
<ul>
<li>Intel HD 5500 found in i5-5200U / official Windows driver</li>
<li>Unknown low-end AMD card / official Windows driver</li>
<li>Raspberry Pi 2 VC4 / Full KMS OpenGL (GLX)</li>
</ul>
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