Closed mvastola closed 9 years ago
No, it is a simple typo that I will correct - thanks - but the behaviour of the system as a whole is more complicated.
In order for the ALSA PCM sound output to be available, two things are required - the creation of a platform device and the loading of a driver module. Currently the platform device is always created - if Device Tree doesn't do it (e.g. using dtparam=audio=on
), then the board support code will. Enabing audio from Device Tree will cause the module to be loaded automatically, otherwise it will have to be loaded manually, usually from /etc/modules. This approach allows a staged transition from always-on (because it is in /etc/modules) to on-if-enabled-in-DT. Once the config.txt setting has been added to new installs and there is a suitable upgrade script (one which spots snd-bcm2835 in /etc/modules entry, removes it and adds dtparam=audio=on
to config.txt), then the hack in the board support code can be removed.
There is a patch for the typo in the source tree, and it will appear in the next release. With this patch and the above explanation, can we close this issue?
Certainly. Thanks a ton!
Sent from my T-Mobile 4G LTE Device
-------- Original message -------- From: Phil Elwell notifications@github.com Date:07/21/2015 6:29 AM (GMT-05:00) To: raspberrypi/linux linux@noreply.github.com Cc: Michael Vastola mike@vasto.la Subject: Re: [linux] Audio Overlay Documentation Confusion (#1078)
There is a patch for the typo in the source tree, and it will appear in the next release. With this patch and the above explanation, can we close this issue?
— Reply to this email directly or view it on GitHub.
I read in the arch wiki that this option in config.txt is now essential. I installed all related alsa packages, pulseaudio etc and also set the config.txt option. But on arch linux I will get no sound output. The installed kodi package can output audio though. I also forced the output to the audio jack, rather than hdmi. I checked pavucontrol and alsamixer. Any ideas why it still does not work?
What is in config.txt?
What does aplay -l
report?
[alarm@alarmpi ~]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 7/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
# See /boot/overlays/README for all available options
[pi0]
# USB OTG driver
dtoverlay=dwc2
[pi1]
# Overclocking Turbo
arm_freq=1000
core_freq=500
sdram_freq=500
over_voltage=6
temp_limit=70
[pi2]
[pi3]
[all]
gpu_mem=128
disable_overscan=1
hdmi_force_hotplug=1
disable_splash=1
dtparam=audio=on
framebuffer_depth=32
framebuffer_ignore_alpha=1
# Get the monitor setting via
# tvservice -n
# /opt/vc/bin/tvservice -n
[EDID=ACR-M230HDL]
# DVI Monitor Mode
hdmi_drive=1
Okay, the dtparam=audio=on is working. I suspect this is a configuration issue. I'd suggest removing puleaudio and any custom audio config and checking if aplay can play a wav file.
I always use this command to test audio:
aplay /usr/share/sounds/alsa/Front_Center.wav
It did not work, even when i had no pulseaudio etc installed. I started from little packages and tried with installing more, but nothing helped.
Afraid we can't offer much support for Arch. If you can try a raspbian install I suspect it would just work, but if it doesn't then we can try to help. Open a new issue though, as yours doesn't seem related to this one.
On raspi1 (with arch linux for pi1) aplay -l does not even recognize a soundcard. alsamixer has at least a sound bar that i can move up and down. config.txt is set correct. kodi works here too (even with no additional alsa packages installed, but maybe they were pulled in via dependency). I know that you don't do arch for rpi, but isnt that strange? rpi1 has the latest 4.4-13 kernel.
Edit: after i installed xfce and launched the desktop the card IS recognized. So i think xorg (all) or xfce4 (all) pulled in some missing dependencies. I guess there are more missing. Do you have any ideas what was missing so far? (aplay a wav still does not work)
Edit: Those packages were pulled in by xfce4 and xorg and xf86-video-fbturbo-git:
Packages (173) adwaita-icon-theme-3.20-2 at-spi2-atk-2.20.1-2 at-spi2-core-2.20.2-1 atk-2.20.0-1 cairo-1.14.6-1 cantarell-fonts-1:0.0.24-1 cdparanoia-10.2-5 colord-1.3.2-2 dbus-glib-0.106-1
dconf-0.26.0-1 dri2proto-2.8-2 dri3proto-1.0-1 fontsproto-2.1.3-1 gdk-pixbuf2-2.34.0-2 glib-networking-2.48.2-1 glproto-1.4.17-1 gnome-icon-theme-3.12.0-3
gnome-icon-theme-symbolic-3.12.0-4 gnome-themes-standard-3.20.2-1 gsettings-desktop-schemas-3.21.2-1 gstreamer0.10-0.10.36-4 gstreamer0.10-base-0.10.36-3
gstreamer0.10-base-plugins-0.10.36-3 gtk-update-icon-cache-3.20.6-1 gtk2-2.24.30-2 gtk3-3.20.6-1 iso-codes-3.68-1 json-glib-1.2.0-1 lcms2-2.7-1 libcroco-0.6.11-1
libdatrie-0.2.10-1 libepoxy-1.3.1-1 libevdev-1.5.1-1 libexif-0.6.21-2 libfontenc-1.1.3-1 libgudev-230-1 libgusb-0.2.9-1 libimobiledevice-1.2.0-3 libinput-1.3.0-2
libkeybinder2-0.3.0-2 libnotify-0.7.6-2 libproxy-0.4.12-2 librsvg-2:2.40.16-1 libsoup-2.54.1-1 libthai-0.1.24-1 libtheora-1.1.1-3 libunique-1.1.6-6 libunwind-1.1-3
libusbmuxd-1.0.10-1 libvisual-0.4.0-6 libwacom-0.18-1 libwnck-2.31.0-1 libxaw-1.0.13-1 libxcursor-1.1.14-2 libxfce4ui-4.12.1-2 libxfce4util-4.12.1-1 libxfont-1.5.1-1
libxft-2.3.2-1 libxkbcommon-0.6.1-1 libxkbfile-1.0.9-1 libxklavier-5.4-1 libxmu-1.1.2-1 libxpm-3.5.11-1 libxres-1.0.7-1 libxt-1.1.5-1 libxv-1.0.10-1 mtdev-1.1.5-1
pango-1.40.1-1 perl-uri-1.71-1 pixman-0.34.0-1 polkit-gnome-0.105-3 presentproto-1.0-1 resourceproto-1.2.0-3 rest-0.8.0-1 scrnsaverproto-1.2.2-2 shared-mime-info-1.6-2
startup-notification-0.12-4 ttf-dejavu-2.35-1 upower-0.99.4-2 videoproto-2.3.3-1 vte-0.28.2-7 vte-common-0.44.2-1 wayland-protocols-1.4-1 xcb-util-0.4.0-1
xcb-util-image-0.4.0-1 xcb-util-keysyms-0.4.0-1 xcb-util-renderutil-0.3.9-1 xcb-util-wm-0.4.1-1 xf86driproto-2.1.1-3 xkeyboard-config-2.17-2 xorg-font-utils-7.6-4
xorg-fonts-alias-1.0.3-1 xorg-fonts-misc-1.0.3-4 xorg-util-macros-1.19.0-1 xorg-xinit-1.3.4-4 exo-0.10.7-2 garcon-0.4.0-1 gtk-xfce-engine-2.10.1-1 thunar-1.6.10-3
thunar-volman-0.8.1-2 tumbler-0.1.31-1 xf86-input-evdev-2.10.3-1 xf86-input-joystick-1.6.2-6 xf86-input-keyboard-1.8.1-2 xf86-input-libinput-0.19.0-1 xf86-input-mouse-1.9.1-2
xf86-input-synaptics-1.8.3-2 xf86-input-void-1.4.1-2 xf86-video-dummy-0.3.7-5 xf86-video-fbdev-0.4.4-5 xf86-video-fbturbo-git-199.f9a6ed7-1 xf86-video-vesa-2.3.4-2
xfce4-appfinder-4.12.0-4 xfce4-mixer-4.11.0-3 xfce4-panel-4.12.0-2 xfce4-power-manager-1.4.4-2 xfce4-session-4.12.1-4 xfce4-settings-4.12.0-4 xfce4-terminal-0.6.3-3
xfconf-4.12.0-3 xfdesktop-4.12.3-2 xfwm4-4.12.3-2 xfwm4-themes-4.10.0-2 xorg-bdftopcf-1.0.5-1 xorg-docs-1.7.1-1 xorg-font-util-1.3.1-1 xorg-fonts-100dpi-1.0.3-2
xorg-fonts-75dpi-1.0.3-2 xorg-fonts-encodings-1.0.4-4 xorg-iceauth-1.0.7-1 xorg-luit-1.1.1-2 xorg-mkfontdir-1.0.7-2 xorg-mkfontscale-1.1.2-1 xorg-server-1.18.3-2
xorg-server-common-1.18.3-2 xorg-server-devel-1.18.3-2 xorg-server-xdmx-1.18.3-2 xorg-server-xephyr-1.18.3-2 xorg-server-xnest-1.18.3-2 xorg-server-xvfb-1.18.3-2
xorg-server-xwayland-1.18.3-2 xorg-sessreg-1.1.0-1 xorg-setxkbmap-1.3.1-1 xorg-smproxy-1.0.6-1 xorg-x11perf-1.6.0-1 xorg-xauth-1.0.9-1 xorg-xbacklight-1.2.1-1
xorg-xcmsdb-1.0.5-1 xorg-xcursorgen-1.0.6-1 xorg-xdpyinfo-1.3.2-1 xorg-xdriinfo-1.0.5-1 xorg-xev-1.2.2-1 xorg-xgamma-1.0.6-1 xorg-xhost-1.0.7-1 xorg-xinput-1.6.2-1
xorg-xkbcomp-1.3.1-1 xorg-xkbevd-1.1.4-1 xorg-xkbutils-1.0.4-2 xorg-xkill-1.0.4-1 xorg-xlsatoms-1.1.2-1 xorg-xlsclients-1.1.3-1 xorg-xmodmap-1.0.9-1 xorg-xpr-1.0.4-2
xorg-xprop-1.2.2-1 xorg-xrandr-1.5.0-1 xorg-xrdb-1.1.0-2 xorg-xrefresh-1.0.5-1 xorg-xset-1.2.3-1 xorg-xsetroot-1.1.1-2 xorg-xvinfo-1.1.3-1 xorg-xwd-1.0.6-1
xorg-xwininfo-1.1.3-1 xorg-xwud-1.0.4-2
kodi doesn't use ALSA (it uses OpenMAX for audio), so its behaviour isn't relevant. You would would be better off asking Arch packaging questions in an Arch forum - I have no knowledge of that.
Thanks for the help popcornmix, I will try to solve the issue. I'd like to add some information here, as people might find this on google. I'll edit this post, if i find out more about it. You may comment if you have further ideas. If not, thats all fine :)
So I plugged in my external usb sound card and tried to play sound with it. And it works.
aplay -D plughw:1,0 /usr/share/sounds/alsa/Front_Center.wav
So there must be something wrong with the analog output. I might try hdmi output as well. And as the command itself (for analog) gives no error, I assume that there must be something wrong with the sound volume or the sound setting in config.txt (maybe i could try to force the audio jack).
With pulseaudio running I only get some "click" sounds with kodi (corrupted sound). I already noticed this with raspbian. So for kodi you rather disable pulseaudio or use its pulseaudio server. Using the pulseaudio server works fine for the usb sound card.
Have you used raspi-config to force the audio to use the analogue outputs? By default it will use HDMI in preference.
Sure i did, via the command line. On arch there is no raspi-config
In arch/arm/boot/dts/overlays/README on the rpi-4.0.y branch, the following is stated (currently on lines 81-82):
I would imagine this is a simple typo, in which case the documentation needs to be updated, but in the case the documentation is actually correct, please consider this submission to be a feature request to make this configuration setting and the accompanying documentation more intuitive.
Thanks, Mike