Update:
on my Odroid-XU4 with Fedora 31 armv7hl KDE I've plugged in a USB DAC:
Apr 13 14:24:54 odroid kernel: usb 2-1: new full-speed USB device number
9 using exynos-ohci
Apr 13 14:24:55 odroid kernel: usb 2-1: New USB device found,
idVendor=08bb, idProduct=2704, bcdDevice= 1.00
Apr 13 14:24:55 odroid kernel: usb 2-1: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
Apr 13 14:24:55 odroid kernel: usb 2-1: Product: USB Audio DAC
Apr 13 14:24:55 odroid kernel: usb 2-1: Manufacturer: Burr-Brown from TI
Apr 13 14:24:55 odroid kernel: input: Burr-Brown from TI
USB Audio DAC as
/devices/platform/soc/12120000.usb/usb2/2-1/2-1:1.2/0003:08BB:2704.0008/input/input11
Apr 13 14:24:55 odroid kernel: hid-generic 0003:08BB:2704.0008:
input,hidraw0: USB HID v1.00 Device [Burr-Brown from TI
USB Audio DAC ] on usb-12120000.usb-1/input2
Apr 13 14:24:55 odroid mtp-probe[20089]: checking bus 2, device 9:
"/sys/devices/platform/soc/12120000.usb/usb2/2-1"
Apr 13 14:24:55 odroid mtp-probe[20089]: bus: 2, device: 9 was not an
MTP device
Apr 13 14:24:55 odroid systemd[20029]: Reached target Sound Card.
Apr 13 14:24:55 odroid systemd[3559]: Reached target Sound Card.
Apr 13 14:24:55 odroid systemd[18629]: Reached target Sound Card.
Apr 13 14:24:55 odroid systemd[1]: Condition check resulted in
Save/Restore Sound Card State being skipped.
Apr 13 14:24:55 odroid systemd[1]: Reached target Sound Card.
Apr 13 14:24:55 odroid mtp-probe[20100]: checking bus 2, device 9:
"/sys/devices/platform/soc/12120000.usb/usb2/2-1"
Apr 13 14:24:55 odroid mtp-probe[20100]: bus: 2, device: 9 was not an
MTP device
Apr 13 14:24:55 odroid rtkit-daemon[769]: Successfully made thread 20103
of process 3571 (/usr/bin/pulseaudio) owned by '1003' RT at priority 5.
Apr 13 14:24:56 odroid plasmashell[3835]: org.kde.plasma.pulseaudio: No
object for name "auto_null"
Apr 13 14:24:56 odroid plasmashell[3835]: org.kde.plasma.pulseaudio: No
object for name "auto_null.monitor"
Apr 13 14:24:56 odroid plasmashell[3835]: org.kde.plasma.pulseaudio: No
object for name "auto_null"
Apr 13 14:24:56 odroid plasmashell[3835]: org.kde.plasma.pulseaudio: No
object for name "auto_null.monitor"
Apr 13 14:24:56 odroid plasmashell[3835]: org.kde.plasma.pulseaudio: No
object for name
"alsa_output.usb-Burr-Brown_from_TI_USB_Audio_DAC-00.analog-stereo.monitor"
If i take this USB-DAC to the Raspi4:
no reaction or response on journal even I load all kernel modules:
lsmod | grep snd
snd 122880 17
snd_seq,snd_seq_device,snd_hwdep,snd_usb_audio,snd_usbmidi_lib,snd_bcm2835,snd_soc_hdmi_codec,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
snd_bcm2835 36864 2
snd_compress 36864 1 snd_soc_core
snd_hwdep 24576 1 snd_usb_audio
snd_pcm 147456 6
snd_usb_audio,snd_bcm2835,snd_soc_hdmi_codec,snd_soc_core,snd_pcm_dmaengine
snd_pcm_dmaengine 20480 1 snd_soc_core
snd_rawmidi 53248 1 snd_usbmidi_lib
snd_seq 106496 0
snd_seq_device 20480 2 snd_seq,snd_rawmidi
snd_soc_core 303104 1 snd_soc_hdmi_codec
snd_soc_hdmi_codec 20480 0
snd_timer 49152 2 snd_seq,snd_pcm
snd_usb_audio 290816 0
snd_usbmidi_lib 40960 1 snd_usb_audio
soundcore 20480 1 snd
vchiq 372736 2 snd_bcm2835,bcm2835_v4l2
Am 04.04.20 um 21:37 schrieb Stefan Wahren:
> Hi Peter,
>
> Am 04.04.20 um 20:40 schrieb Peter Robinson:
>>> Fedora 32 aarch64 with XFCE runs smoothly on my Raspi4. Everything is
>>> working fine except sound. I can't hear anything with my headphone
>>> plugged in .
>> It's not supported upstream, the analog port on the RPi3 isn't
>> supported in the upstream kernel yet either,
> what do you mean with analog port on RPi 3 isn't supported?
>
> The bcm2835-audio driver has been there a long time, it's only in staging.
>
> Regards
> Stefan
>
>> but if you also look
>> close enough you'd also see that the graphics for the RPi4 isn't
>> accelerated on your XFCE instance.... again not yet supported
>> upstream.
>>
>>> The pavumeter is working.
>>>
>>> I want to use this Raspberry for Multimedia streaming on TV.
>> Well you'll be able to do that when the support lands in the upstream kernel.
>>
>>> BTW: Sound via Bluetooth is working fine.
>>>
>>>
>>> Greeting
>>>
>>> Andreas
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