Re: Sound issues on ThinkPad X220T (Lenovo)

[riveravaldez <riveravaldezmail@gmail.com>]

On 4/12/20, Andrei POPESCU <andreimpopescu@gmail.com> wrote:
> On Sb, 11 apr 20, 21:02:39, riveravaldez wrote:
>>
>> Strangely, 'speaker-test -c2' doesn't produce a sound. But 'sudo
>> speaker-test -c2' works flawlessly. (The idea to check that came from
>> [1].)
>
> Any error message? Is your user a member of group 'audio'?
>
> Some program might be blocking the sound card, check also the output of
> 'lsof | grep /dev/snd' (as root).
>
> Kind regards,
> Andrei

Thanks a lot for your answer and help, Andrei.
I've got these:

$ groups
thinkpad cdrom floppy sudo audio dip video plugdev netdev

$ speaker-test -c2 [Still not sound.]

speaker-test 1.2.2

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 96 to 1048576
Period size range from 32 to 349526
Using max buffer size 1048576
Periods = 4
was set period_size = 262144
was set buffer_size = 1048576
 0 - Front Left
 1 - Front Right
Time per period = 12,314270
 0 - Front Left
 1 - Front Right
^CTime per period = 12,317682

$ sudo speaker-test -c2 [Sounds OK.]

speaker-test 1.2.2

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 16384
Period size range from 1024 to 1024
Using max buffer size 16384
Periods = 4
was set period_size = 1024
was set buffer_size = 16384
 0 - Front Left
 1 - Front Right
Time per period = 5,644667
 0 - Front Left
^CWrite error: -4,Llamada al sistema interrumpida
xrun_recovery failed: -4,Llamada al sistema interrumpida
Transfer failed: Llamada al sistema interrumpida
[System is in Spanish, last lines mean, 'Interrupted system-call'.]

$ sudo lsof | grep /dev/snd/
timidity   644                        timidity  mem       CHR
    116,2                13463 /dev/snd/pcmC0D0p
timidity   644                        timidity    3r      CHR
   116,33       0t0      12547 /dev/snd/timer
timidity   644                        timidity    4u      CHR
    116,2       0t0      13463 /dev/snd/pcmC0D0p
timidity   644                        timidity    5u      CHR
    116,9       0t0      13479 /dev/snd/controlC0
timidity   644                        timidity    6u      CHR
    116,1       0t0      12548 /dev/snd/seq
alsamixer 2150                        thinkpad    3u      CHR
    116,9       0t0      13479 /dev/snd/controlC0

Maybe a timidity configuration issue?