Question Laptop audio crackling and freezing

Nov 6, 2019
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Hi! So yesterday i opened my laptop and i noticed that the sound had issues. I searched on the internet for fixing the problem and i saw that i have a problem with my laptop handling the realtime tasks and the latency is high. I tried a lot of methods. All i could find on internet and it didn't worked. I even reinstalled windows erasing my hdds but i still have this problem.

!! Is not only on my speakers. It is also on the headphones.

Can someone please help me??
 
Nov 11, 2019
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Firstly if I was you I would try to reinstall the drivers for the audio card on your laptop. Sometimes windows update can cause issues with drivers so it might've caused an issue with yours. You mentioned that the overall speed of the laptop is being affected as well and that the "latency" of the machine is quite high. Are you able to tell me about the conditions of the laptop when this occurs ? Is the machine hot to touch i.e feels like it might be overheating, is it only occurring when it is off charge or on charge or both, does it happen straight away or does it take awhile for the problem to occur, is the hard drive on the laptop noticeably loud when this occurs (this could be clicking noises or what sounds like crunching noises when under load or idle) ? Thanks
 
Nov 6, 2019
4
0
10
0
Firstly if I was you I would try to reinstall the drivers for the audio card on your laptop. Sometimes windows update can cause issues with drivers so it might've caused an issue with yours. You mentioned that the overall speed of the laptop is being affected as well and that the "latency" of the machine is quite high. Are you able to tell me about the conditions of the laptop when this occurs ? Is the machine hot to touch i.e feels like it might be overheating, is it only occurring when it is off charge or on charge or both, does it happen straight away or does it take awhile for the problem to occur, is the hard drive on the laptop noticeably loud when this occurs (this could be clicking noises or what sounds like crunching noises when under load or idle) ? Thanks
I already reinstalled all the drivers. The problem occurs straight away when i power up my laptop. idk if the laptop is slow, i mean for example my mouse cursor glitches and the most noticeable is the sound that glitches, freeze or have drop outs effects etc.

This is what i get with LatencyMon:

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CONCLUSION
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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. 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 0:00:32 (h🇲🇲ss) on all processors.


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SYSTEM INFORMATION
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Computer name: DESKTOP-GA9CF4U
OS version: Windows 10 , 10.0, version 1903, build: 18362 (x64)
Hardware: 81AX, LENOVO, LNVNB161216
CPU: GenuineIntel Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Logical processors: 8
Processor groups: 1
RAM: 11532 MB total


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CPU SPEED
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Reported CPU speed: 1992 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.



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MEASURED INTERRUPT TO USER PROCESS LATENCIES
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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 (µs): 104561.70
Average measured interrupt to process latency (µs): 5.832806

Highest measured interrupt to DPC latency (µs): 104518.40
Average measured interrupt to DPC latency (µs): 2.9180


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REPORTED ISRs
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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 (µs): 676.484438
Driver with highest ISR routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Highest reported total ISR routine time (%): 0.001327
Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation

Total time spent in ISRs (%) 0.002264

ISR count (execution time <250 µs): 815
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 1
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0


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REPORTED DPCs
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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 (µs): 105216.197791
Driver with highest DPC routine execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.872746
Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation

Total time spent in DPCs (%) 0.927844

DPC count (execution time <250 µs): 50010
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 8
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


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REPORTED HARD PAGEFAULTS
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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: msmpeng.exe

Total number of hard pagefaults 567
Hard pagefault count of hardest hit process: 375
Number of processes hit: 8


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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 1.657653
CPU 0 ISR highest execution time (µs): 676.484438
CPU 0 ISR total execution time (s): 0.005802
CPU 0 ISR count: 816
CPU 0 DPC highest execution time (µs): 104619.928213
CPU 0 DPC total execution time (s): 0.761654
CPU 0 DPC count: 47448
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CPU 1 Interrupt cycle time (s): 0.889275
CPU 1 ISR highest execution time (µs): 0.0
CPU 1 ISR total execution time (s): 0.0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 101220.555221
CPU 1 DPC total execution time (s): 0.235054
CPU 1 DPC count: 166
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CPU 2 Interrupt cycle time (s): 1.816768
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 105216.197791
CPU 2 DPC total execution time (s): 0.911098
CPU 2 DPC count: 663
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CPU 3 Interrupt cycle time (s): 1.599006
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 100896.870984
CPU 3 DPC total execution time (s): 0.132699
CPU 3 DPC count: 32
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CPU 4 Interrupt cycle time (s): 1.530955
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 100983.012048
CPU 4 DPC total execution time (s): 0.331984
CPU 4 DPC count: 555
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CPU 5 Interrupt cycle time (s): 0.900215
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 7.669679
CPU 5 DPC total execution time (s): 0.000048
CPU 5 DPC count: 15
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CPU 6 Interrupt cycle time (s): 1.932867
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 73.587349
CPU 6 DPC total execution time (s): 0.001124
CPU 6 DPC count: 243
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CPU 7 Interrupt cycle time (s): 1.707309
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 72.973896
CPU 7 DPC total execution time (s): 0.003921
CPU 7 DPC count: 931
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