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.
| Note |
---|
| 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. |
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.
| Tip |
---|
| 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.
|
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 |
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/