|
Hi,all This mail is about Raspberry Pi 3B/B+'s Mediaplayer, Mixer,sound card and 4A.
As a known issue, Raspberry Pi's onboard sound card can't work with AGL. So I test with a USB dongle audio apapter.
And I got some problems. I will try to describe in short. Thanks. Test Enviroment: -Board: RPI 3B+ -AGL: Guppy 7.0.2 -USB sound card: ID 1b3f:2008 Generalplus Technology Inc.
(according to https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/generalplus, this card works fine with RPI original os) Setting Process: - insert usb sound card - $aplay -l # to get card no and device no card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 - $vi /etc/asound.conf # add below words to specify usb sound card as default defaults.pcm.card 1
defaults.pcm.device 0 defaults.ctl.card 1 - $speaker-test # i did get the noise Problem I: When startup Mixer, i only get a black sceen with side bars. raspberrypi3:~# 4a-status ---- Audio cards detected ---- card 0: Loopback card 1: Device card 3: ALSA card 4: vc4hdmi ---- snd-aloop driver availability ---- zcat: /proc/config.gz: No such file or directory WARNING: Not built into the kernel, devices order can randomly change! zcat: /proc/config.gz: No such file or directory ERROR: snd-aloop is not provided at all, 4a-softmixer can't work! ---- 4a service status ---- SUCCESS: Service is currently running! To elimate the above error, ~# modprobe configs then “4a-status" again, report all success with no error and warning. But this do no effect to invoke the Mixer bars.
Problem II: - Mediaplayer can only play aac, can not play mp3,ogg,wav - Mediaplayer can oly play aac once when system power-on, no longer play any more. no log in /var/log/messages. BR Li -------------------------------------------------------- Li Xiaoming Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
No. 6 Wenzhu Road, Nanjing, 210012, China Email：lixm.fnst@xxxxxxxxxxxxxx -------------------------------------------------------- |
_______________________________________________ automotive-discussions mailing list automotive-discussions@xxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/automotive-discussions
