Crackling audio over 3.5 and USB, fine over HDMI and in Ubuntu Solved

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  1.    #11

    Hey there.
    Apologies this took so long, I don't have much time to test things at the moment.

    dalchina said: View Post
    You can try a clean boot for comparison
    I ran Latency Mon after doing a clean boot, and the were no issues.
    Code:
    _________________________________________________________________________________________________________
    CONCLUSION
    _________________________________________________________________________________________________________
    Your system appears to be suitable for handling real-time audio and other tasks without dropouts. 
    LatencyMon has been analyzing your system for  0:05:00  (h:mm:ss) on all processors.
    
    
    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name:                                        NEXUS
    OS version:                                           Windows 10 , 10.0, build: 17763 (x64)
    Hardware:                                             ASUSTeK COMPUTER INC., Z170-A
    CPU:                                                  GenuineIntel Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
    Logical processors:                                   8
    Processor groups:                                     1
    RAM:                                                  16250 MB total
    
    
    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed:                                   4008 MHz
    
    Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
    
    WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature. 
    
    
    
    _________________________________________________________________________________________________________
    MEASURED INTERRUPT TO USER PROCESS LATENCIES
    _________________________________________________________________________________________________________
    The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
    
    Highest measured interrupt to process latency (Ás):   219,50
    Average measured interrupt to process latency (Ás):   2,382541
    
    Highest measured interrupt to DPC latency (Ás):       217,80
    Average measured interrupt to DPC latency (Ás):       0,922613
    
    
    _________________________________________________________________________________________________________
     REPORTED ISRs
    _________________________________________________________________________________________________________
    Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
    
    Highest ISR routine execution time (Ás):              178,867515
    Driver with highest ISR routine execution time:       HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
    
    Highest reported total ISR routine time (%):          0,006468
    Driver with highest ISR total time:                   dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
    
    Total time spent in ISRs (%)                          0,010711
    
    ISR count (execution time <250 Ás):                   15323
    ISR count (execution time 250-500 Ás):                0
    ISR count (execution time 500-999 Ás):                0
    ISR count (execution time 1000-1999 Ás):              0
    ISR count (execution time 2000-3999 Ás):              0
    ISR count (execution time >=4000 Ás):                 0
    
    
    _________________________________________________________________________________________________________
    REPORTED DPCs
    _________________________________________________________________________________________________________
    DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
    
    Highest DPC routine execution time (Ás):              176,206337
    Driver with highest DPC routine execution time:       ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
    
    Highest reported total DPC routine time (%):          0,005417
    Driver with highest DPC total execution time:         nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 418.91 , NVIDIA Corporation
    
    Total time spent in DPCs (%)                          0,010648
    
    DPC count (execution time <250 Ás):                   78045
    DPC count (execution time 250-500 Ás):                0
    DPC count (execution time 500-999 Ás):                0
    DPC count (execution time 1000-1999 Ás):              0
    DPC count (execution time 2000-3999 Ás):              0
    DPC count (execution time >=4000 Ás):                 0
    
    
    _________________________________________________________________________________________________________
     REPORTED HARD PAGEFAULTS
    _________________________________________________________________________________________________________
    Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
    
    NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
    
    Process with highest pagefault count:                 ekrn.exe
    
    Total number of hard pagefaults                       2205
    Hard pagefault count of hardest hit process:          1408
    Number of processes hit:                              20
    
    
    _________________________________________________________________________________________________________
     PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s):                       1,919010
    CPU 0 ISR highest execution time (Ás):                178,867515
    CPU 0 ISR total execution time (s):                   0,257086
    CPU 0 ISR count:                                      15323
    CPU 0 DPC highest execution time (Ás):                176,206337
    CPU 0 DPC total execution time (s):                   0,211360
    CPU 0 DPC count:                                      54477
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s):                       0,109661
    CPU 1 ISR highest execution time (Ás):                0,0
    CPU 1 ISR total execution time (s):                   0,0
    CPU 1 ISR count:                                      0
    CPU 1 DPC highest execution time (Ás):                48,823603
    CPU 1 DPC total execution time (s):                   0,003026
    CPU 1 DPC count:                                      1767
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s):                       0,144890
    CPU 2 ISR highest execution time (Ás):                0,0
    CPU 2 ISR total execution time (s):                   0,0
    CPU 2 ISR count:                                      0
    CPU 2 DPC highest execution time (Ás):                147,309381
    CPU 2 DPC total execution time (s):                   0,004283
    CPU 2 DPC count:                                      2460
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s):                       0,139947
    CPU 3 ISR highest execution time (Ás):                0,0
    CPU 3 ISR total execution time (s):                   0,0
    CPU 3 ISR count:                                      0
    CPU 3 DPC highest execution time (Ás):                62,015968
    CPU 3 DPC total execution time (s):                   0,004228
    CPU 3 DPC count:                                      2069
    _________________________________________________________________________________________________________
    CPU 4 Interrupt cycle time (s):                       0,152524
    CPU 4 ISR highest execution time (Ás):                0,0
    CPU 4 ISR total execution time (s):                   0,0
    CPU 4 ISR count:                                      0
    CPU 4 DPC highest execution time (Ás):                80,319361
    CPU 4 DPC total execution time (s):                   0,021373
    CPU 4 DPC count:                                      12201
    _________________________________________________________________________________________________________
    CPU 5 Interrupt cycle time (s):                       0,125982
    CPU 5 ISR highest execution time (Ás):                0,0
    CPU 5 ISR total execution time (s):                   0,0
    CPU 5 ISR count:                                      0
    CPU 5 DPC highest execution time (Ás):                104,880739
    CPU 5 DPC total execution time (s):                   0,002079
    CPU 5 DPC count:                                      866
    _________________________________________________________________________________________________________
    CPU 6 Interrupt cycle time (s):                       0,161630
    CPU 6 ISR highest execution time (Ás):                0,0
    CPU 6 ISR total execution time (s):                   0,0
    CPU 6 ISR count:                                      0
    CPU 6 DPC highest execution time (Ás):                47,785679
    CPU 6 DPC total execution time (s):                   0,004977
    CPU 6 DPC count:                                      2321
    _________________________________________________________________________________________________________
    CPU 7 Interrupt cycle time (s):                       0,14010
    CPU 7 ISR highest execution time (Ás):                0,0
    CPU 7 ISR total execution time (s):                   0,0
    CPU 7 ISR count:                                      0
    CPU 7 DPC highest execution time (Ás):                71,981038
    CPU 7 DPC total execution time (s):                   0,004239
    CPU 7 DPC count:                                      1884
    _________________________________________________________________________________________________________
    fireberd said: View Post
    For Testing remove the video card and use the Intel Video and connect the speakers to the motherboard (Green) speaker jack or just use the headset, to see if you still get crackling and/or if Latency Mon shows any problems.
    I have not installed the latest version of Latency Mon before running the test, so the reported version is still incorrect, and I also managed to forget to actually plug in and test a headset while the GPU was disconnected, but Latency Mon showed that the latency dropped by about a half (less than it did in a clean boot though).
    Code:
    _________________________________________________________________________________________________________
    CONCLUSION
    _________________________________________________________________________________________________________
    Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. 
    LatencyMon has been analyzing your system for  0:10:00  (h:mm:ss) on all processors.
    
    
    _________________________________________________________________________________________________________
    SYSTEM INFORMATION
    _________________________________________________________________________________________________________
    Computer name:                                        NEXUS
    OS version:                                           Windows 10 , 10.0, build: 17763 (x64)
    Hardware:                                             ASUSTeK COMPUTER INC., Z170-A
    CPU:                                                  GenuineIntel Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
    Logical processors:                                   8
    Processor groups:                                     1
    RAM:                                                  16250 MB total
    
    
    _________________________________________________________________________________________________________
    CPU SPEED
    _________________________________________________________________________________________________________
    Reported CPU speed:                                   4008 MHz
    
    Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
    
    WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature. 
    
    
    
    _________________________________________________________________________________________________________
    MEASURED INTERRUPT TO USER PROCESS LATENCIES
    _________________________________________________________________________________________________________
    The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
    
    Highest measured interrupt to process latency (Ás):   2834,50
    Average measured interrupt to process latency (Ás):   2,161013
    
    Highest measured interrupt to DPC latency (Ás):       2826,10
    Average measured interrupt to DPC latency (Ás):       0,744220
    
    
    _________________________________________________________________________________________________________
     REPORTED ISRs
    _________________________________________________________________________________________________________
    Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
    
    Highest ISR routine execution time (Ás):              2903,960329
    Driver with highest ISR routine execution time:       HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
    
    Highest reported total ISR routine time (%):          0,012680
    Driver with highest ISR total time:                   HDAudBus.sys - High Definition Audio Bus Driver, Microsoft Corporation
    
    Total time spent in ISRs (%)                          0,013207
    
    ISR count (execution time <250 Ás):                   86560
    ISR count (execution time 250-500 Ás):                0
    ISR count (execution time 500-999 Ás):                2
    ISR count (execution time 1000-1999 Ás):              1
    ISR count (execution time 2000-3999 Ás):              2
    ISR count (execution time >=4000 Ás):                 0
    
    
    _________________________________________________________________________________________________________
    REPORTED DPCs
    _________________________________________________________________________________________________________
    DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
    
    Highest DPC routine execution time (Ás):              2895,987774
    Driver with highest DPC routine execution time:       ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
    
    Highest reported total DPC routine time (%):          0,009048
    Driver with highest DPC total execution time:         rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
    
    Total time spent in DPCs (%)                          0,030128
    
    DPC count (execution time <250 Ás):                   1190415
    DPC count (execution time 250-500 Ás):                0
    DPC count (execution time 500-999 Ás):                15
    DPC count (execution time 1000-1999 Ás):              6
    DPC count (execution time 2000-3999 Ás):              4
    DPC count (execution time >=4000 Ás):                 0
    
    
    _________________________________________________________________________________________________________
     REPORTED HARD PAGEFAULTS
    _________________________________________________________________________________________________________
    Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
    
    NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
    
    Process with highest pagefault count:                 ekrn.exe
    
    Total number of hard pagefaults                       35025
    Hard pagefault count of hardest hit process:          14611
    Number of processes hit:                              67
    
    
    _________________________________________________________________________________________________________
     PER CPU DATA
    _________________________________________________________________________________________________________
    CPU 0 Interrupt cycle time (s):                       7,449469
    CPU 0 ISR highest execution time (Ás):                2903,960329
    CPU 0 ISR total execution time (s):                   0,632595
    CPU 0 ISR count:                                      86533
    CPU 0 DPC highest execution time (Ás):                2895,987774
    CPU 0 DPC total execution time (s):                   1,179187
    CPU 0 DPC count:                                      1100042
    _________________________________________________________________________________________________________
    CPU 1 Interrupt cycle time (s):                       1,632037
    CPU 1 ISR highest execution time (Ás):                148,895459
    CPU 1 ISR total execution time (s):                   0,001334
    CPU 1 ISR count:                                      24
    CPU 1 DPC highest execution time (Ás):                296,011727
    CPU 1 DPC total execution time (s):                   0,028071
    CPU 1 DPC count:                                      9125
    _________________________________________________________________________________________________________
    CPU 2 Interrupt cycle time (s):                       1,795906
    CPU 2 ISR highest execution time (Ás):                1,488024
    CPU 2 ISR total execution time (s):                   0,000006
    CPU 2 ISR count:                                      8
    CPU 2 DPC highest execution time (Ás):                1023,033683
    CPU 2 DPC total execution time (s):                   0,075737
    CPU 2 DPC count:                                      30683
    _________________________________________________________________________________________________________
    CPU 3 Interrupt cycle time (s):                       1,736178
    CPU 3 ISR highest execution time (Ás):                0,0
    CPU 3 ISR total execution time (s):                   0,0
    CPU 3 ISR count:                                      0
    CPU 3 DPC highest execution time (Ás):                674,429142
    CPU 3 DPC total execution time (s):                   0,018273
    CPU 3 DPC count:                                      5677
    _________________________________________________________________________________________________________
    CPU 4 Interrupt cycle time (s):                       1,879017
    CPU 4 ISR highest execution time (Ás):                0,0
    CPU 4 ISR total execution time (s):                   0,0
    CPU 4 ISR count:                                      0
    CPU 4 DPC highest execution time (Ás):                870,378992
    CPU 4 DPC total execution time (s):                   0,048207
    CPU 4 DPC count:                                      16464
    _________________________________________________________________________________________________________
    CPU 5 Interrupt cycle time (s):                       1,741878
    CPU 5 ISR highest execution time (Ás):                0,0
    CPU 5 ISR total execution time (s):                   0,0
    CPU 5 ISR count:                                      0
    CPU 5 DPC highest execution time (Ás):                2169,021707
    CPU 5 DPC total execution time (s):                   0,027992
    CPU 5 DPC count:                                      8270
    _________________________________________________________________________________________________________
    CPU 6 Interrupt cycle time (s):                       1,876470
    CPU 6 ISR highest execution time (Ás):                0,0
    CPU 6 ISR total execution time (s):                   0,0
    CPU 6 ISR count:                                      0
    CPU 6 DPC highest execution time (Ás):                938,541168
    CPU 6 DPC total execution time (s):                   0,040019
    CPU 6 DPC count:                                      12191
    _________________________________________________________________________________________________________
    CPU 7 Interrupt cycle time (s):                       1,787245
    CPU 7 ISR highest execution time (Ás):                0,0
    CPU 7 ISR total execution time (s):                   0,0
    CPU 7 ISR count:                                      0
    CPU 7 DPC highest execution time (Ás):                210,237525
    CPU 7 DPC total execution time (s):                   0,028661
    CPU 7 DPC count:                                      7988
    _________________________________________________________________________________________________________
      My ComputersSystem Spec

  2.    #12

    I ran Latency Mon after doing a clean boot, and the were no issues.
    That's interesting, as it suggests it's not a basic driver issue and should give you a basis for diagnosis- process of elimination. But perhaps you had simultaneously made other changes to your configuration as discussed... could you clarify?
      My ComputersSystem Spec

  3.    #13

    After a clean boot it was OK. What was installed after the clean boot?
    Maybe another clean boot and then only install one app or whatever you are doing and check. Don't install or do multiple things then check as you won't know which one is causing it.
      My ComputersSystem Spec

  4.    #14

    Well, it took a while, but I finally had the time to test each of the non-Microsoft services in System Configuration one by one to see which one could be causing the issues.

    As it turned out, it wasn't just one specific service but a combination of more. The biggest offenders turned out to be the Bonjour service, and ASUS AI Suite 3. The only reason why I even have the Bonjour service installed is because of iTunes, I don't actually have any printers so I don't need it otherwise, and so I disabled it. And the only reason why I had AI Suite installed is because of the fan curve control. I uninstalled AI Suite and replaced it with a different tool to control chassis fan curves, and I am no longer having latency issues, nor do I hear the crackling on analog audio.
      My ComputersSystem Spec

  5.    #15

    I have iTunes and the Bonjour and its not causing me any problems, with an ASUS ROG Maximus Hero VIII Z1`70 motherboard and i7 6700K.
    I have a Latency Mon screenshot posted earlier in this thread and it shows no latency problems.
      My ComputersSystem Spec

  6.    #16

    MrPatko0770 said: View Post
    Well, it took a while, but I finally had the time to test each of the non-Microsoft services in System Configuration one by one to see which one could be causing the issues.

    As it turned out, it wasn't just one specific service but a combination of more. The biggest offenders turned out to be the Bonjour service, and ASUS AI Suite 3. The only reason why I even have the Bonjour service installed is because of iTunes, I don't actually have any printers so I don't need it otherwise, and so I disabled it. And the only reason why I had AI Suite installed is because of the fan curve control. I uninstalled AI Suite and replaced it with a different tool to control chassis fan curves, and I am no longer having latency issues, nor do I hear the crackling on analog audio.
    Just read the whole thread...May OP descirbes more the pops & clicks you could hear? The following recordings are mine:

    * https://soundcloud.com/user-69108164...ckling/s-StcCt (~0:02)
    * https://soundcloud.com/user-69108164...ling-2/s-lgPg9 (~0:02)
    * https://soundcloud.com/user-691081649/demo-of-sound-crackling-3/s-d0aGI (~0:02)

    I am using Sound Blaster X Katana soundbar connected directly to motherboard rear USB port. The soundbar has a DAC integrated. As you can hear, the issue I have is a sort of intermittent distortions which happen totally random. I used the LatencyMon and no abnormal latency was detected. The issue will immediately disappear if I switch to optical audio via TOSLINK cable. I also have the most up-to-date Windows 10 build.

    May I know if your pops/clicks are same as mine?

    Anson
      My ComputerSystem Spec


 
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