Can't get sound working

Gareth Francis gareth_francis at hotmail.com
Tue Feb 23 03:33:55 EST 2010


Did you reflash the nn? Although that didn't fix mine (haven't looked into it though)


-----Original Message-----
From: James Haggerty
Sent: 2/23/2010 8:08:18 AM
To: developer at lists.qi-hardware.com
Subject: Can't get sound working
Hi all,

I'm sure this should go on the planned users list... but in the meantime.

I received my nanonote a few hours ago (hooray!) but can't get it to
make any noise (testing via aplay, which thinks it's playing a wav
file but I hear nothing). It seems unresponsive to any attempt to
change settings through alsamixer, alsactl or amixer (though amixer
thinks it's doing something useful). For instance:

root at BenNanoNote:/usr/bin# amixer -d sset 'Output Mixer DAC' on
Simple mixer control 'Output Mixer DAC',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
root at BenNanoNote:/usr/bin# amixer -d sget 'Output Mixer DAC'
Simple mixer control 'Output Mixer DAC',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]

(notice how on setting the playback is 'on', but if I read back the
result it's off)

When I look at the settings in alsamixer, the volume is stuck on 100,
and output mixer bypass and DAC are both off.

Boot messages:
[   10.170000] Advanced Linux Sound Architecture Driver Version 1.0.21.
[   10.180000] No device for DAI jz4740-i2s
[   10.230000] asoc: jz-codec <-> jz4740-i2s mapping ok
[   10.260000] ALSA device list:
[   10.270000]   #0: QI LB60 (jz-codec)

Am I missing something obvious?

Thanks,
James.

PS Also, I have the following repeated error on boot:
[   13.150000] power_supply battery: driver failed to report
`voltage_now' property
[   16.150000] power_supply battery: driver failed to report
`voltage_now' property
[   17.510000] power_supply battery: driver failed to report
`voltage_now' property

Should I be worried?

PPS In other sad news, it's locked up twice, once after ifconfig
segfaulted (???).

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