[alsa_record_playback_*] test sets output volume way too low

[Jeff Lane ]

Steps to verify:

Run checkbox and get to the alsa_record_playback_external test
Open sound prefs and set output volume to maximum
click Test
Notice that it sets output volume far below 100%

because this sets the settings so low, I am unable to actually hear the recorded sound when its played back.

[Daniel Manrique (roadmr)]

Volume is set at 50%, which depending on the particular machine, may be too low; on some, I'm able to hear it, but on others the sound is more faint.

We can potentially change this to something louder by adjusting the value in the job definition. For the automated audio tests I've been using 70% volume, which works fine, and should alleviate this problem.

[Po-Hsu Lin (cypressyew)]

Tested on 201408-15387, with a fresh install of 14.04.2 + update
(checkbox rev 3986)
it's working as expected. Please refer to the attachment for input / output level screenshot.

Therefore, I will close this bug with Fix-Released, thanks!