Audio-Distros: Dietpi decided to revert to RPI-stock kernel..(very sad)

so, 😉
its very,very sad, but „Fourdee“ over at DietPi decided to go back to RPI-stock-kernel means no more enhancements/improvements in 384khz-playback in Linux/RPI-kernels (for our lovely chinese ES90xx-Boards via I2S) ;-(

thats really,really sad because in the earlier Versions of Dietpi (i guess till V1.54) it was the only RPI-audio-distro which sounds really good (Best !!) with at that time the ES9023 (dtoverlay=hifiberry-dac)+ES9018K2M at 384khz with no prob played via MPD..
u could change the sample-frequency via their wonderful „Dietpi-Boom“-Gui..;-(

Text on the Github-Page->Link:
„I’ve taken the decision to revert our DietPi RPi kernel to stock RPi kernel.
Currently the only difference in our kernel was:
DSD pop prevention on initial playback.
We simply do not have the man power and available time, to ensure this is updated regularly with requested patches. Time we can use to focus on supporting bug fixes and improvements for DietPi.
In future, all RPi kernel patch requests should be made directly to the RPi foundation, who have paid employees dedicated to that specific task:
https://github.com/raspberrypi/linux
This will ensure all RPi users will benefit from the requested fix, if accepted by the kernel maintainers.
I apologise if this effects audiophile users, however, I hope we have your understanding for this change.“

so, we have to look now for alternatives, cause as said DietPi has for me the best „sound“ of all (audio-)-distros for the RPI (guess it was because of the lightweight-design (less processes,less distortion))

1. Moode ->Link… now at V4.0Beta12..has also canceled their RT-/advanced-kernel thingy..(all concerning the support of our lovely chinese ES9023,ES9018K2M,ES9028Q2M and ES9038Q2M-boards via I2S)->hope they will invent it again..
2. Volumio ->Link (now at V2.348)… found it really horrible at the beginning but meanwhile its much better..absolute easy to use; almost no pops,clicks, and a very relaxed/easy use (try it again 😉 ) but now also not with full 384khz support for our boards via I2S..
3. Picoreplayer ->Link.. now at pCP3.22 (27.Sep.2017)->absolute 384khz-capable (look at the other posts), but not so comfortable..

these 3 were my choice after i tested a lot of other audio-distros for the RPI at the beginnung with our ES-Sabre-Boards(there were a lot more, Daphne, Rasp-something, Runeaudio etc..but the above were the best/most comfortable imo)

if u mean u know another good audio-distro (comfortable, easy to use, 384khz) please leave a comment here !! (and we can move it maybe to the forum->http://essabre-90xx-rpi.sfb2.com/forum/)

„SKYSONG“–XMOS-XU208-USB Part II.: Sample-frequency+PCM/DSD Leds

so,
again some pictures from the above mentioned Skysong-XMOS-XU208 in „action“: 😉

(this (above) should be (explanation at the bottom) „PCM„/“384khz„)

Taobao->22,81€ (incl.shipping)->https://item.taobao.com/item.htm?spm=a211ha.10565794.0.0.e1360b5U0Xo17&id=560049846644&toSite=main

according to the primary post->http://essabre-90xx-rpi.sfb2.com/2017/11/skysong-xmos-usb-xu208/ and this „Singxer Q1-Diagramm“ theres the fourth Led in the upper right a „PCM/DSD“ indicator (and not what iÂŽve written „Power“-indicator->u have to zoom in the picture)


(more information in the original post->http://essabre-90xx-rpi.sfb2.com/2017/11/skysong-xmos-usb-xu208/ )

ES9028Q2M+ Volumio 2.323 (17.11.2017) + Hints about 384khz in general

so,
i normally „hate“ this Volumio->came back to it by chance..


(V-2.323)
https://volumio.org/get-started/
so, very smooth and clean..not so many pops,clicks and noise..relaxed..->try it !! 😉 (i wondered myself->relatively good alternative to the other rpi-audioplayer at present)

I used „Generic I2S DAC“ and then came „Hifiberry-DAC“ automatically..
tried to upsample it to 384khz but was not possible „ALSA-error“->and so we are back to the main problem with 384khz and this ES9028Q2M-Board (tried to recall it here, before i forgot it again):
Over I2S and the RPI3B its normally only up to 192khz->for more (384khz) u need a kernel patch..
In picoreplayer u can use the „es9023“ overlay and the the „384khz“-option then (as said some articles before); but picoreplayer is not so comfortable..
same at present with MoodeV4B9 and „hifiberry-dac“->because it has not now the advanced and realtime-kernel as before also no 384khz: same at present with Dietpi..
DoP seems possible; and so we come to the next article->DSD-LED (+Volume and FIR-Buttons) on these ES9028Q2M->http://essabre-90xx-rpi.sfb2.com/2017/11/dsd-led-volume-and-fir-buttons-on-these-es9028q2m-boards-diy/

ES 9028Q2M->dtoverlay Raspberry Pi->config.txt

okay,
for this ES9028Q2M:

the working dtoverlay in config.txt is fortunately again (Raspberry Pi+DietPi+other):
hifiberry-dac -> (in config.txt): dtoverlay=hifiberry-dac
up to 384khz with no problem..
(rpi-dac works too, but as said limited to 192khz)

Hint for squeezelite-command-line options (also in picoreplayer->squeezelite-settings): try to use 24 (bit) and mmap on (1)..
(on this board 16 (Bit) causes only a heavy distorted noise/very often/almost in every case, beware !!))
PiCorePlayer->„in Picoreplayer you have to change from „simple/generic es9023“ (es9018k2m) to „ES9023“ (without anything)->up to 384khz;
(also had problems playing in 16bit->distorted noise; so try to use 24 oder 32 bit in „ALSA-Params“)
RPI-Dac was also possible in picoreplayer (but only up to 192khz)“

link+further description here:
http://dietpi.com/phpbb/viewtopic.php?f=9&t=1891&p=7243&hilit=es9023#p7243

ES 9018K2M->dtoverlay Raspberry Pi->config.txt

okay,
for this ES9018K2M:

the only working dtoverlay in config.txt (Raspberry Pi+DietPi+other) is:
rpi-dac -> (in config.txt): dtoverlay=rpi-dac
and though, its unfortunately limited to 192khz !!
there is no other dtoverlay that works without distortion for this board..(searched and demanded it for weeks, no success)

But after a lot of research its possible to get 384khz on this board to work with->PiCorePlayer !!
Description->„try picoreplayer->audio-options->use „Generic/simple es9023″->advanced->“Audio Card Control“->check „dt-overlay parameters 384k“..
let „onboard soundcard“ enabled (had problems with it changing, but try your luck“)->check the output with->sudo cat /proc/asound/card1/pcm0p/sub0/hw_params (or ../card0/.. if u unchecked onboard sound device)..
additionally change upsample setting to „X“ (upsample to max device capacity) and set alsa settings->sample format to 24 (had problems with 32)
so youÂŽre done !!!“

link+further description here:
http://dietpi.com/phpbb/viewtopic.php?f=9&t=1891&p=7243&hilit=es9023#p7243

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