(01-Oct-2014, 20:44)Confused Wrote: [ -> ]That's not lazy, it's efficient! 
Good work, thanks. I'll give this a try at the weekend, now with my system, given sufficient time, I can get the white noise very consistently. So if it works for me, then you are definitely on to something. I'm not overly optimistic to be honest, but I'll definitely give it a try and report back.
I have Windows 2012R2 installed on a Intel NUC. Noise is unfortunately present even with power management of the NIC disabled. NIC is 82579LM. As this is a server OS there are more than 32 settings in the NIC config. I've disabled all that relates to 'Offloading', but there are many other settings I could try. As Confused says I am not too optimistic.
If I look under the cover of my 250 I will definitely report which wifi card it has.
OK, I wasn't very optimistic about it as well but thought it was worth a try!
I could share my (also Intel) NIC settings here but I'm not near the system now. Will do later, I did tweak these settings as well.
(02-Oct-2014, 15:07)Antoine Wrote: [ -> ]I could share my (also Intel) NIC settings here but I'm not near the system now. Will do later, I did tweak these settings as well.
That would be very helpful, thanks!
(02-Oct-2014, 22:35)ogs Wrote: [ -> ] (02-Oct-2014, 15:07)Antoine Wrote: [ -> ]I could share my (also Intel) NIC settings here but I'm not near the system now. Will do later, I did tweak these settings as well.
That would be very helpful, thanks!
No problem, I'll look them up and share them tomorrow.
As promised, my Intel NIC settings. This NIC is used for a direct connection to the Devialet. All protocols are disabled except for TCP/IP (v4) and QoS. All powersaving features disabled as well.
adaptive inter-frame spacing -disabled
Enable PME -disabled
Flow control -Rx&Tx enabled
Gigabit master slave mode -auto detect
Interrupt Moderation -Disabled
Interrupt Moderation Rate - Off
IPv4 checksum offload - rx and tx enabled
Jumbo packet - disabled
Large send offload v2 (ipv4) - enabled
Large send offload v2 (ipv6) - enabled
Log link state event - enabled
max number of rss processors - 8
max number of rss queues - 2 queues
max rss processor number - 63
packet priority & vlan - disabled
preferred numa node - system default
receive buffers - 2048
receive side scaling - enabled
reduce speed on power down - disabled
RSS base processor number - 0
RSS load balancing profile - NUMAScalingStatic
Speed & Duplex - Auto Neg
All TCP and UDP checksum offload settings IPv4 and IPv6 - Rx&Tx Enabled
Transmit buffers - 2048
Waitr for link - auto detect
Wake on link settings - disabled
wake on magic packet - disabled
wake on pattern match - disabled
@
Antoine - Are these settings intended purely to optimise the interface for audio? Plus, are there any negatives here, that is, will these settings cause a "multi-purpose" home PC to loose functionality when used for other general computing tasks?
Regarding the long list of NIC adapter settings, they are the settings that I think are optimized for low latency audio. Downside of these settings (especially because of disabling interrupt moderation) is that your PC will consume more CPU power during high traffic. Also they turn of wake on LAN so if you'd like to use that reenable the last three settings. Otherwise I see no downsides.
Regarding disabling of all the protocols except for TCP/IP (v4) and QoS, you'd only want to do that on the interface if it's used as a direct ethernet connection to the Devialet. It'll break things like file sharing in a Windows network.
I noticed when I was using Fidelizer that on more extreme settings it looks like it locks the NIC at a slow speed. Presumably they think this gives a benefit? I haven't look too closely (in fact I haven't really looked into it at all as I'm very lazy) but I'm guessing it may even lock the NIC at 10Mbps?
(04-Oct-2014, 16:29)Antoine Wrote: [ -> ]As promised, my Intel NIC settings. This NIC is used for a direct connection to the Devialet. All protocols are disabled except for TCP/IP (v4) and QoS. All powersaving features disabled as well.
thanks for sharing. I'll check settings on my own NIC against these.
I opened my 250 today to look at the wifi card. I believe it is the same card I had in the D-Premier. Attaching pictures of the duet card and wifi.
EDIT: I had to reduce the size of the photos to attach them to the post so there is lack of detail. A bit difficult to read text on the various components.
EDIT 2: There is a BB SRC4392I sample rate converter two hops from the XMOS chip. I wonder what that is used for...
Well I had this "noise" happen to me.. I was listening to music with a friend, switched tracks and bam static and distorted sound. I'm not sure what the fix via Devialet is but I went ahead and ordered a Auralic Aries..I'm not a fan of trying to troubleshoot an obviously on going issue. Plus I'd rather just turn on the system and listen. I had enough BS trying to troubleshoot PS Audio's Bridge that never really worked right..not interested in doing it again.