Troubleshooting Linux Audio, Part 2
In my last installment of this series I introduced a variety of GUI-based tools that can help you discover more about your system to help identify potentially troublesome components. This week we'll look at some of the command-line utilities that do similar work. In fact, some of these utilities are the engines underneath the more attractive GUI tools, and there may be good reasons to employ the engines directly instead of relying upon their graphic incarnations.
The Linux console or terminal window (xterm or similar) is your best friend at the start of your audio diagnostics. If you launch an application from the command prompt you can receive reports from the program regarding its initialization and performance, and errors are often reported with helpful details.
Linux command-line tools are powerful resources. They are typically intended for combined use, following the UNIX philosophy of small tools that can be chained together to create more powerful tools. The following article describes some of the more important tools and utilities for troubleshooting audio problems, but my descriptions here are necessarily brief. For more complete information about a particular command see its manual page (e.g. 'man dmesg').
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