10.3.
Troubleshooting Your Sound Card
If, for some reason, you do not hear sound and know that you do
have a sound card installed, you can run the Sound Card Configuration Tool utility.
To use the Sound Card Configuration
Tool, choose =>
=> . A window opens, prompting
you for your root password.
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Note |
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Most sound cards are supported by Red Hat Enterprise Linux, but
there are some sound cards that are not completely compatible or
may not work at all. If you are having trouble configuring your
sound card, check the Hardware Compatibility List at https://hardware.redhat.com/hcl/ to see if your card is
supported.
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The Sound Card Configuration Tool
utility probes your system for sound cards. If the utility detects
a plug and play sound card, it automatically tries to configure the
correct settings for your card. You can then click the Play test sound button to play a sound sample. If
you can hear the sample, select OK and
your sound card configuration is complete.
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Tip |
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It is possible that your sound has been muted. To check this,
click on the Volume Control icon on the top Panel. Check the Volume
Control application available from the (the main menu on the panel) => Sound
& Video => Volume Control. If any of the mute boxes have
been checked, un-check them and try the Sound Card Configuration
Tool again.
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10.3.1. If Sound Card Configuration Tool Does Not Work
If the Sound Card Configuration Tool
does not work (if the sample does not play and you still do not
have audio sounds), there are alternatives, although they are not
quite as simple as running the Sound Card
Configuration Tool. You can edit your modules.conf file as discussed in the next section
(this strategy is not recommended for most new users) or refer to
the documentation that came with your sound card for more
information.
10.3.1.1.
Manual Sound Card Configuration
If your sound card is not a plug and play card, you can manually
edit your /etc/modules.conf file to
include the sound card module that it should use. You must have
root privileges to alter this file. The following is an example of
the text to add to your /etc/modules.conf
file:
alias sound sb
alias midi opl3
options opl3 io=0x388
options sb io=0x220 irq=7 dma=0,1 mpu_io=0x300
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For information on configuring sound manually, refer to the
Linux Sound HOWTO at the Linux
Documentation Project webpage:
https://www.tldp.org/HOWTO/Sound-HOWTO/
