Ubuntu Backtrack Sound Problems & alsa

Today We're going to configure a new Installation of Debian Dist of BackTrack Linux and its very likely you may have problems hearing audio .

main commands to look up on terminal
- alsamixer 

It so happens sometimes that there is sound but its volume is very low and you can not hear it . Thus type alsamixer in terminal to check if you have the right volume.

if in case this does not work open terminal and check for playback sound devices installed  . Use the command aplay -l and check for device lists.

if your devices are found you will see something similar to this
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC270 Analog [ALC270 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

To Check Devices you may also use the following command 
 lspci -v
01:05.0 VGA compatible controller: ATI Technologies Inc M880G [Mobility Radeon HD 4200]
    Subsystem: Hewlett-Packard Company Device 1444
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Memory at c0000000 (32-bit, prefetchable) [size=256M]
    I/O ports at 3000 [size=256]
    Memory at d0300000 (32-bit, non-prefetchable) [size=64K]
    Memory at d0200000 (32-bit, non-prefetchable) [size=1M]
    Capabilities: [50] Power Management version 3
    Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-

N.B make sure you have alsa packages installed . You can install them in synaptic .