[SOLVED] installing slackware on arm chromebook?

Hey guys,

I've have a xe303c12 chromebook setup using the kernel and modules from archlinux as described here, but I cannot seem to get pulseaudio working. The sound card is detected, but pulseaudio is only listing a null sink. Any ideas what might be wrong?

pacmd list-sinks
1 sink(s) available.
* index: 0
name: <auto_null>
driver: <module-null-sink.c>
flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 1000
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 183.39 ms
max request: 344 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 2000.00 ms; range is 0.50 .. 2000.00 ms
module: 16
properties:
device.description = "Dummy Output"
device.class = "abstract"
device.icon_name = "audio-card"

did you test your speakers
how does your aplay -l look like

then do aplay -D plughw:0,0 {or 0,1} /usr/share/sound/alsa/Front_Left.wav



yea with that kernel should work...
check your .asoundrc file or asound.conf

I'm not sure how you are looking at pulse though since i thought that was more of just like a wrapper esp for bluetooth

Alsa's working , I even copied the asound.conf from archlinux.

root@slackware:~# uname -a
Linux slackware 3.8.11-4-ARCH #1 SMP Sat Oct 22 11:59:55 MDT 2016 armv7l SAMSUNG EXYNOS5 (Flattened Device Tree) GNU/Linux
root@slackware:~# aplay /usr/share/sounds/alsa/*.wav
shared memfd open() failed: Function not implemented
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Front_Left.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Front_Right.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Rear_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Rear_Left.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Rear_Right.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Side_Left.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Playing WAVE '/usr/share/sounds/alsa/Side_Right.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

I think it may be related to the error message produced. I was getting the same issue under a chroot on archlinux, but I tried with an archlinux install and it worked fine. Its all a bit odd.

@PragmaticCypher

what's your output of?
aplay -l
aplay -L

- backup your current /etc/asound.conf and substitute with the following content:

# ALSA system-wide config file
# By default, redirect to PulseAudio:
##pcm.default pulse
##ctl.default pulse

pcm.mmap0 {
    type mmap_emul;
    slave {
      pcm "hw:0,0";
    }
}

pcm.!default {
  type plug;
  slave {
    pcm mmap0;
  }
}

- a reboot might be useful, although not really necessary if you kill and start pulseaudio (pulseaudio -k & pulseaudio -D)

- check the whole list of pulseaudio devices & sinks and look for a card entry:
pulseaudio -D
pacmd list

1 card(s) available.
index: 0
name: <alsa_card.0>
driver: <module-alsa-card.c>

...etc

- you should check /var/log/syslog for pulseaudio potential issues (that's where pulseaudio logs by default)
- and try what's documented on:
https://wiki.archlinux.org/index.php...oting#No_cards

@abga thanks for the help

I've managed to get things working. Pulseaudio was not loading alsa's sink module (not sure why). I've fixed this by forcing the load of it on startup

/etc/pulse/default.pa:
load-module module-alsa-sink

The device takes some time to work, so I also had to stop 'suspend on idle'. Otherwise there's a significant delay when trying to play anything.

/etc/pulse/system.pa:
#load-module module-suspend-on-idle

I'm still very curious why I am getting the error messages "shared memfd open() failed: Function not implemented". I would be grateful if anyone could explain.

@PragmaticCypher

Always happy to help! Glad you made it work.

/etc/pulse/default.pa: load-module module-alsa-sink

- that's weird, try to amend both:
default.pa
system.pa

### Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect tsched=0 ignore_dB=1

I'm still very curious why I am getting the error messages "shared memfd open() failed:

- there are many discussions around this on the net and it looks like it is safe to ignore ...

Worth to mention that there were some issues between pulseaudio 10 - 11.1, you might want to check the changelogs at:
https://www.freedesktop.org/wiki/Software/PulseAudio/

yeah im workig with a older kernel than yours.

you could just bypass pulse altogether if you comment everything in asound.conf

and use this .asoundrc

pcm.!default {
                                type plug
                                slave.pcm "dmixer"
                              }

                              pcm.dsp0 {
                                type plug
                                slave.pcm "dmixer"
                              }

                              pcm.dmixer {
                                type dmix
                                ipc_key 1024
                                slave {
                                  pcm hw:0
                                  #card 2 #front:VSL
                                  format S32_LE
                                  rate 48000
                                }
                              }

i hear the brackets arent the bests but it works for mine...

ps aux | grep pulse

someone 933 0.0 0.0 3112 964 tty1 S+ 02:16 0:00 grep pulse

then reboot

@abga

Modifying the config files as you suggested did not seems to work . I'm using slackwarearm-14.2 so I'm with pulseaudio version 9. For the moment I'm staying away from -current to avoid the constant updates. I was running it before though and I had the same problems.

I think I'll just stick with the current configuration I have as it seems to be working.

@slackartist

Thanks for the recommendation but I need pulseaudio. I'm using the chromebook as a remote bluetooth speaker, and I need it for this .

Just to reiterate, if anyone else is having similar issues, this was my 'fix':

/etc/pulse/default.pa:
load-module module-alsa-sink

/etc/pulse/system.pa:
#load-module module-suspend-on-idle

do you guys use mplayer on arm?

i just cant get it stable. its not good enough to use. im not too sure but recompiling doesnt seem to have an effect. maybe i should look through individual packages and continue from there. esp since arch linux mplayer armv7 runs good.