Hello there, I'm been having an audio problem with Win10 on a recently purchased Dell laptop.
I started the system for the first time three weeks ago, and been having this problem since then.
Problem details
When I listen to music or play games the audio stutters/does a "glitch-like" sound for a split second. The video or videogame does not freeze or stutter.
I realized this some days ago but it always happens every 15 minutes. I tested this while listening to Youtube for 3 hours and it always happened with that frequency.
From this I realized it may be a process/application related problem but I haven't been able to find the culprit.
Things I tried to do after searching the net (all without effect)
-Disinstalling Realtek Audio Drivers, currently using windows native audio drivers (and an external DAC when using headphones)
-Disabling Wireless Intel Drivers since I always use ethernet and read that it may be the culprit (it isn't)
-Confirmed that the BIOS version is the latest one
-Confirmed that the drivers from Dell are up to date
Other Spec (rest is down below in the log and speccy's link)
-Driver verifier is enabled
-Currently using Windows Defender as security software
-Using standard Windows Defender firewall and antimalware
-Not using any Disk image tools
-Not overclocking or underclocking
I actually ended up in this forum after downloading and trying to run Latencymon. The value "Highest measured interrupt to process latency (µs)" goes from 2.6k of value to something between 20k-45k after the audio stutters. I couldn't find the culprit anyway, after trying to disable acpi.sys because it (almost) always had the highest values for DPC/ISR. Once I confirmed that it did nothing I enabled it again. Below I'm going to paste the latest Latencymon report log, registered until the stutter happened and took almost together with the trace (link below).
Following the forum guide, here are the other links:
Trace (run until after the stutter occcurred), msinfo32 and dxdiag.exe zip file download: here
Speccy: here
Thanks in advance for any help, I really hope I can defeat this problem once and for all!
_________________________________________________________________________________________________________
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. 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 0:04:46 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-PDJOOFM
OS version: Windows 10 , 10.0, build: 17134 (x64)
Hardware: G7 7588, Dell Inc., 0FDMYT
CPU: GenuineIntel Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Logical processors: 12
Processor groups: 1
RAM: 16178 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2208 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.
_________________________________________________________________________________________________________
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 (µs): 41990,087406
Average measured interrupt to process latency (µs): 4,334724
Highest measured interrupt to DPC latency (µs): 3289,048054
Average measured interrupt to DPC latency (µs): 1,143264
_________________________________________________________________________________________________________
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 (µs): 359,461051
Driver with highest ISR routine execution time: ndis.sys - NDIS (Network Driver Interface Specification), Microsoft Corporation
Highest reported total ISR routine time (%): 0,005299
Driver with highest ISR total time: ACPI.sys - Driver ACPI per NT, Microsoft Corporation
Total time spent in ISRs (%) 0,008294
ISR count (execution time <250 µs): 34220
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 2
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 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 (µs): 2760,596014
Driver with highest DPC routine execution time: ACPI.sys - Driver ACPI per NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0,022009
Driver with highest DPC total execution time: Wdf01000.sys - Runtime framework driver modalità kernel, Microsoft Corporation
Total time spent in DPCs (%) 0,062329
DPC count (execution time <250 µs): 651154
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 422
DPC count (execution time 1000-1999 µs): 49
DPC count (execution time 2000-3999 µs): 5
DPC count (execution time >=4000 µs): 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: msmpeng.exe
Total number of hard pagefaults 19
Hard pagefault count of hardest hit process: 14
Number of processes hit: 4
_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 10,892731
CPU 0 ISR highest execution time (µs): 359,461051
CPU 0 ISR total execution time (s): 0,284728
CPU 0 ISR count: 34222
CPU 0 DPC highest execution time (µs): 2760,596014
CPU 0 DPC total execution time (s): 2,118549
CPU 0 DPC count: 649591
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 25,570906
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): 10,725543
CPU 1 DPC total execution time (s): 0,000051
CPU 1 DPC count: 11
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 13,321109
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): 82,653080
CPU 2 DPC total execution time (s): 0,000207
CPU 2 DPC count: 27
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 19,230586
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): 105,271739
CPU 3 DPC total execution time (s): 0,000427
CPU 3 DPC count: 37
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 12,550763
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): 256,848732
CPU 4 DPC total execution time (s): 0,002172
CPU 4 DPC count: 368
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 13,487699
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): 144,774457
CPU 5 DPC total execution time (s): 0,001531
CPU 5 DPC count: 117
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 11,500197
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): 202,134964
CPU 6 DPC total execution time (s): 0,004443
CPU 6 DPC count: 407
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 11,811212
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): 198,961957
CPU 7 DPC total execution time (s): 0,000743
CPU 7 DPC count: 51
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 11,275687
CPU 8 ISR highest execution time (µs): 0,0
CPU 8 ISR total execution time (s): 0,0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 252,135870
CPU 8 DPC total execution time (s): 0,005989
CPU 8 DPC count: 472
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s): 11,839309
CPU 9 ISR highest execution time (µs): 0,0
CPU 9 ISR total execution time (s): 0,0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 146,798007
CPU 9 DPC total execution time (s): 0,000228
CPU 9 DPC count: 18
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s): 9,306371
CPU 10 ISR highest execution time (µs): 0,0
CPU 10 ISR total execution time (s): 0,0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 137,051630
CPU 10 DPC total execution time (s): 0,005094
CPU 10 DPC count: 521
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s): 9,377155
CPU 11 ISR highest execution time (µs): 0,0
CPU 11 ISR total execution time (s): 0,0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 127,619565
CPU 11 DPC total execution time (s): 0,000160
CPU 11 DPC count: 10
_________________________________________________________________________________________________________
I started the system for the first time three weeks ago, and been having this problem since then.
Problem details
When I listen to music or play games the audio stutters/does a "glitch-like" sound for a split second. The video or videogame does not freeze or stutter.
I realized this some days ago but it always happens every 15 minutes. I tested this while listening to Youtube for 3 hours and it always happened with that frequency.
From this I realized it may be a process/application related problem but I haven't been able to find the culprit.
Things I tried to do after searching the net (all without effect)
-Disinstalling Realtek Audio Drivers, currently using windows native audio drivers (and an external DAC when using headphones)
-Disabling Wireless Intel Drivers since I always use ethernet and read that it may be the culprit (it isn't)
-Confirmed that the BIOS version is the latest one
-Confirmed that the drivers from Dell are up to date
Other Spec (rest is down below in the log and speccy's link)
-Driver verifier is enabled
-Currently using Windows Defender as security software
-Using standard Windows Defender firewall and antimalware
-Not using any Disk image tools
-Not overclocking or underclocking
I actually ended up in this forum after downloading and trying to run Latencymon. The value "Highest measured interrupt to process latency (µs)" goes from 2.6k of value to something between 20k-45k after the audio stutters. I couldn't find the culprit anyway, after trying to disable acpi.sys because it (almost) always had the highest values for DPC/ISR. Once I confirmed that it did nothing I enabled it again. Below I'm going to paste the latest Latencymon report log, registered until the stutter happened and took almost together with the trace (link below).
Following the forum guide, here are the other links:
Trace (run until after the stutter occcurred), msinfo32 and dxdiag.exe zip file download: here
Speccy: here
Thanks in advance for any help, I really hope I can defeat this problem once and for all!
_________________________________________________________________________________________________________
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. 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 0:04:46 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: DESKTOP-PDJOOFM
OS version: Windows 10 , 10.0, build: 17134 (x64)
Hardware: G7 7588, Dell Inc., 0FDMYT
CPU: GenuineIntel Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Logical processors: 12
Processor groups: 1
RAM: 16178 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2208 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.
_________________________________________________________________________________________________________
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 (µs): 41990,087406
Average measured interrupt to process latency (µs): 4,334724
Highest measured interrupt to DPC latency (µs): 3289,048054
Average measured interrupt to DPC latency (µs): 1,143264
_________________________________________________________________________________________________________
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 (µs): 359,461051
Driver with highest ISR routine execution time: ndis.sys - NDIS (Network Driver Interface Specification), Microsoft Corporation
Highest reported total ISR routine time (%): 0,005299
Driver with highest ISR total time: ACPI.sys - Driver ACPI per NT, Microsoft Corporation
Total time spent in ISRs (%) 0,008294
ISR count (execution time <250 µs): 34220
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 2
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 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 (µs): 2760,596014
Driver with highest DPC routine execution time: ACPI.sys - Driver ACPI per NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0,022009
Driver with highest DPC total execution time: Wdf01000.sys - Runtime framework driver modalità kernel, Microsoft Corporation
Total time spent in DPCs (%) 0,062329
DPC count (execution time <250 µs): 651154
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 422
DPC count (execution time 1000-1999 µs): 49
DPC count (execution time 2000-3999 µs): 5
DPC count (execution time >=4000 µs): 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: msmpeng.exe
Total number of hard pagefaults 19
Hard pagefault count of hardest hit process: 14
Number of processes hit: 4
_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 10,892731
CPU 0 ISR highest execution time (µs): 359,461051
CPU 0 ISR total execution time (s): 0,284728
CPU 0 ISR count: 34222
CPU 0 DPC highest execution time (µs): 2760,596014
CPU 0 DPC total execution time (s): 2,118549
CPU 0 DPC count: 649591
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 25,570906
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): 10,725543
CPU 1 DPC total execution time (s): 0,000051
CPU 1 DPC count: 11
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 13,321109
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): 82,653080
CPU 2 DPC total execution time (s): 0,000207
CPU 2 DPC count: 27
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 19,230586
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): 105,271739
CPU 3 DPC total execution time (s): 0,000427
CPU 3 DPC count: 37
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 12,550763
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): 256,848732
CPU 4 DPC total execution time (s): 0,002172
CPU 4 DPC count: 368
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 13,487699
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): 144,774457
CPU 5 DPC total execution time (s): 0,001531
CPU 5 DPC count: 117
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 11,500197
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): 202,134964
CPU 6 DPC total execution time (s): 0,004443
CPU 6 DPC count: 407
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 11,811212
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): 198,961957
CPU 7 DPC total execution time (s): 0,000743
CPU 7 DPC count: 51
_________________________________________________________________________________________________________
CPU 8 Interrupt cycle time (s): 11,275687
CPU 8 ISR highest execution time (µs): 0,0
CPU 8 ISR total execution time (s): 0,0
CPU 8 ISR count: 0
CPU 8 DPC highest execution time (µs): 252,135870
CPU 8 DPC total execution time (s): 0,005989
CPU 8 DPC count: 472
_________________________________________________________________________________________________________
CPU 9 Interrupt cycle time (s): 11,839309
CPU 9 ISR highest execution time (µs): 0,0
CPU 9 ISR total execution time (s): 0,0
CPU 9 ISR count: 0
CPU 9 DPC highest execution time (µs): 146,798007
CPU 9 DPC total execution time (s): 0,000228
CPU 9 DPC count: 18
_________________________________________________________________________________________________________
CPU 10 Interrupt cycle time (s): 9,306371
CPU 10 ISR highest execution time (µs): 0,0
CPU 10 ISR total execution time (s): 0,0
CPU 10 ISR count: 0
CPU 10 DPC highest execution time (µs): 137,051630
CPU 10 DPC total execution time (s): 0,005094
CPU 10 DPC count: 521
_________________________________________________________________________________________________________
CPU 11 Interrupt cycle time (s): 9,377155
CPU 11 ISR highest execution time (µs): 0,0
CPU 11 ISR total execution time (s): 0,0
CPU 11 ISR count: 0
CPU 11 DPC highest execution time (µs): 127,619565
CPU 11 DPC total execution time (s): 0,000160
CPU 11 DPC count: 10
_________________________________________________________________________________________________________