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+--- Thread: Roon supports Devialet AIR (/Thread-Roon-supports-Devialet-AIR)
RE: Roon supports Devialet AIR - Sylvain27 - 19-Jul-2017
(19-Jul-2017, 11:46)Hifi_swlon Wrote: Roon are aware of those lines. I've had them for a while and not had any dropouts.Hello,
But that said last night I experienced a few dropouts for the first time. I didn't have logs open or note times so can't correlate. I'm also going to play with buffers if it happens again. All my devices are happy with default but maybe AIR needs a little extra.
I made a few tests, changing the buffer size. I played a flac 192 kHz / 24 bit album.
Buffer size = 50 ms , a dropout (music stops a short time then goes on again) after less than 3 minutes. In the log file I could see the time between "Starting playback" and the Debug: [transport/devialet] NAK[...] line (and dropout in this example, cracking noise in other ones). 2 min 43 s
Buffer = 100 ms , 3 min 04 s between Starting playback and Debug: [transport/devialet] NAK[...] line
Buffer = 500 ms , 4 min 04 s between Starting playback and Debug: [transport/devialet] NAK[...] line
I will try longer buffer sizes, but I don't know the Default value (1000 ms was the Default value of Devialet Air 3.04).
It seems that with a short buffer, dropouts occur quicker.
Best regards,
Sylvain
RE: Roon supports Devialet AIR - Cylob - 19-Jul-2017
(19-Jul-2017, 11:30)Sylvain27 Wrote: Hello,
I can hear cracking (I am not sure it is the right word, sometimes it is similar to WHITE NOISE...) streaming with Roon Devialet Air (more or less once in 15 minutes), Devialet Expert 800 connected with ethernet cable to PC Windows 10.
When I look at the logfiles, I always have these lines during cracking :
07/19 11:40:25 Info: [stats] 1892mb Virtual, 687mb Physical, 401mb Managed, 1163 Handles, 46 Threads
07/19 11:40:25 Debug: [transport/devialet] NAK[131]
07/19 11:40:25 Debug: [transport/devialet] NAK[172]
07/19 11:40:26 Debug: [transport/devialet] NAK[146]
07/19 11:40:26 Debug: [transport/devialet] NAK[130]
07/19 11:40:26 Debug: [transport/devialet] NAK[66]
07/19 11:40:26 Trace: [prebuffer] status 960000/960000 (100%) @ 183/501 sec
07/19 11:40:26 Debug: [transport/devialet] NAK[50]
07/19 11:40:26 Debug: [transport/devialet] NAK[34]
07/19 11:40:26 Debug: [transport/devialet] NAK[1]
07/19 11:40:31 Trace: [prebuffer] status 960000/960000 (100%) @ 189/501 sec
I did not notice these lines : Debug: [transport/devialet] NAK[...] when there is no cracking.
Did someone else have the same problem (cracking) and the same lines in RoonServer log files?
I asked for help on Roon Community forum.
It seems that horrible and famous "DEVIALET WHITE NOISE PROBLEM" is not dead.
Best regards,
Sylvain
![[Image: giphy.gif]](https://media.giphy.com/media/VszoONpBpxAAg/giphy.gif)
Big bummer!!
RE: Roon supports Devialet AIR - Hifi_swlon - 19-Jul-2017
I never had what most describe as white noise with AIR, only ever crackles.
My droupouts felt like neither - just a very brief and obvious dropout. Hasn't reoccurred today, so will keep an eye on everything.
RE: Roon supports Devialet AIR - petrik - 19-Jul-2017
Brian added an interesting reply regarding this problem:
https://community.roonlabs.com/t/crackles-with-devialet-air-ethernet/28559/4
I found this part particularly interesting:
"Generally when we see NAK patterns like that, it's a sign that something is getting overwhelmed or bottlenecked on the Expert side, and that caused the Expert to drop a lot of packets on the floor at once. "NAK" means that the Expert is requesting that Roon re-send packets that were lost. The more alarming thing is not the presence of NAK's (these are normal), but the high counts associated with them.
Occasionally, there can be other causes for this--1000mbit to 100mbit transitions at network switches are notorious for dropping UDP packets (AIR uses UDP). Buggy switches and bad network cables (both of which are more common than you might think) can also be the culprit."
I already started thinking that could this problem be caused by my switch (the Aqvox switch) or my Ethernet cables (basic cat6)....
RE: Roon supports Devialet AIR - Drifter - 19-Jul-2017
I used to have an Airport Extreme 5th generation as wifi router and never could get Air over wifi to work properly (even the new Air integration into Roon). I threw it out and bought a new Asus integrated ADLS wifi router and all of a sudden it all works beautifully. Strange thing is none of my other wifi devices ever complained about the Extreme (although fair enough buffering is not as noticeable as it is with music that drops out). My take away is that you need a very stable network.
RE: Roon supports Devialet AIR - disarmamant - 19-Jul-2017
(19-Jul-2017, 17:54)Hifi_swlon Wrote: I never had what most describe as white noise with AIR, only ever crackles.
My droupouts felt like neither - just a very brief and obvious dropout. Hasn't reoccurred today, so will keep an eye on everything.
I had a dropout on my 220 Pro yesterday evening streaming from Linux Roon Core over ethernet. But it turned out to be the 4098 Over voltage fault.
Could be what you have there, its worth checking to see what the last fault was.
I have not experienced any other dropout, crackles or white noise since I started using Roon over ethernet.
RE: Roon supports Devialet AIR - sam1000 - 19-Jul-2017
(19-Jul-2017, 08:58)Pim van Vliet Wrote:(19-Jul-2017, 07:19)sam1000 Wrote: has anyone noticed that the Devialet unit gets very hot after using Roon-Air for an hour or two?
That's because you enjoy the music so much you keep cranking it up
True dat :-)
RE: Roon supports Devialet AIR - baddog - 19-Jul-2017
Whether or not you have Dynamic Power Management on or off can also be a factor in how warm/hot your Devialet gets. Setting it to On appears to keep the unit cooler through greater energy efficiency.
RE: Roon supports Devialet AIR - Wdw - 19-Jul-2017
(19-Jul-2017, 22:37)baddog Wrote: Whether or not you have Dynamic Power Management on or off can also be a factor in how warm/hot your Devialet gets. Setting it to On appears to keep the unit cooler through greater energy efficiency.
Any sonic benefits in turning DPM on or off?
RE: Roon supports Devialet AIR - baddog - 20-Jul-2017
Anecdotally and perhaps otherwise, some would state that leaving it off will provide the maximum aural benefit. Full power ahead! Which may well be true.
For me, I have tried it both ways, never noticed a significant difference (though of course that might be me), and thus reverted back to keeping in ON, which keeps the D440 cooler, and makes me believe, whether true or not, that I am saving on my monthly electrical bill.