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HifiBerry DAC+ Alsa PCM control not available

Hi all,

I have a Hifiberry DAC+ installed in my RasPi and Raspbian as the operating system. Since I used rpi-update some days ago, my soundcard isn't working correctly.
The drivers are installed as described in the documentation. The aplay -l command shows:

**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ HiFi pcm512x-hifi-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0

In the syslog file the hardware gets detected but I am not sure whether everything is correct there.

May 15 21:14:39 raspberrypi kernel: [ 7.414069] snd-rpi-hifiberry-dacplus sound: ASoC: CPU DAI (null) not registered
May 15 21:14:39 raspberrypi kernel: [ 7.528058] snd-rpi-hifiberry-dacplus sound: snd_soc_register_card() failed: -517
May 15 21:14:39 raspberrypi kernel: [ 7.560263] usb 1-1.3: reset high-speed USB device number 4 using dwc_otg
May 15 21:14:39 raspberrypi kernel: [ 7.693040] platform sound: Driver snd-rpi-hifiberry-dacplus requests probe deferral
May 15 21:14:39 raspberrypi kernel: [ 7.760117] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5592, rev 0222 detected
May 15 21:14:39 raspberrypi kernel: [ 7.857192] snd-rpi-hifiberry-dacplus sound: pcm512x-hifi <-> 20203000.i2s mapping ok

Especially the second line looks not very promising.

And the last thing. Starting the alsamixer tool, does not show any PCM settings.

Does anyone have an idea what is wrong with my Hifiberry?

Thanks

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