CSC 161.02 Grinnell College Fall 2018
Scribbler 2
CSC 161.02:
Imperative Problem Solving and Memory Management
Scribbler 2
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Note: Although this course is well-developed and tested, be prepared for adjustments in some details as the semester progresses.

Sound on MathLAN Workstations

Sound is available through headphones through most MathLAN workstatations. However, sometimes the audio setting is muted. To adjust sound, follow these instructions:

  1. In a terminal window, type

    alsamixer
    
  2. A graphical interface appears in the terminal window, with a vertical column showing the volumn setting.

    • If MM appears in the small box at the bottom of the vertical column, sound has been muted. Press m on the keyboard to enable sound. (The m is a toggle setting; pressing m multiple times successively enables and disables sound.
    • Once sound is enabled, the sound level is shown for the left and right channels at the bottom of the interface, with numbers between 0 and 100 just above the line that reads "Master".
      • Use the number keys (e.g., 1, 2, 3, ..., 7, 8, 9) to set both channels (e.g., to 10, 20, 30, 70, 80, 90).
      • Use the uparrow and downarrow keys to increase or decrease the audio level with finer-grain control.
  3. Press Esc, the Escape key, to quite the alsa mixer.