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dimabelk
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Posts: 12
Registered: ‎02-18-2016
Location: Riga
Views: 982
Message 1 of 7

Y700-15ISK Touchpad and sound glitches(stuttering)

Recently faced with some problems: while using touchpad, mouse pointer suddenly jumps to another place. Another problem is sound glitches(stuttering) and looks like it happens at the same time when the touchpad glitches. I've already tried to update drivers but problem still exists. Any solutions ? 

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 941
Message 2 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

Hi Dima,

 

Welcome to the Lenovo community!

 

Try updating the BIOS, then do a reset factory default on the BIOS. Also after you deactivate the touchpad, does the mouse cursor moves if you try using the touchpad?

Click here for better understanding.

 

Also, Check your DPC latencies using this for choppy sounds:
http://www.thesycon.de/deu/latency_check.shtml

 

Let us know how you get on.

 

Regards,

Shashi

 

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KaneZ
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Posts: 1
Registered: ‎04-09-2016
Location: US
Views: 894
Message 3 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

Hi shashi,

 

I got the same problem with my Y700-15ISK laptop. I used the DPC Latnecy Checker and the latnecy was often more than 8000 us when I was watching YouTube movie. After reboot, the latnecy reduced, but was still more than 1000 us. What are possible reasons for this latnecy?

 

Kane

dimabelk
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Posts: 12
Registered: ‎02-18-2016
Location: Riga
Views: 876
Message 4 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

I've checked it with DPC Latnecy Checker and it was 1000 and higher. I've tried updating BIOS but still no effect. As for the touchpad - looks like this problem is solved. 

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 860
Message 5 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

Hi Dima,

 

Great that touchpad goes well. 

 

When it comes to DPC Values are approximates. Values between 0-300 are good, 300-500 are OK, 500-1000 are bad and values >1000 are terrible.

If you have problems with high DPC latency, here are some quick tips:

  1. Update your drivers (especially audio, network LAN, WiFi, Bluetooth)
  2. Disable unused components (like the LAN,on-board audio card, Bluetooth) via BIOS or Device Manager.
  3. Make sure you have your Windows updated
  4. Disable any motherboard/CPU monitors that autostart with windows (like GigaByte Easy Tune, Asus AI Probe and so on)
  5. Disable High Precision Event Timer (HPET) if you are using Windows Vista, Win7 or Win8.

 

I hope the above information helps.

 

Regards,

Shashi

 

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dimabelk
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Posts: 12
Registered: ‎02-18-2016
Location: Riga
Views: 846
Message 6 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

After updating drivers, latency is even worse. Before updates it was between 500-1500 and now its 1300 and higher. By the way, I've checked latency on my Desktop PC and latency is 1000-1200, but there is no sound stuttering at all.

Retired Support Specialist
Posts: 3,772
Registered: ‎12-24-2015
Location: IN
Views: 817
Message 7 of 7

Re: Y700-15ISK Touchpad and sound glitches(stuttering)

Hi Dima,

 

We are sorry to hear that your issue has not yet been fixed.

 

Install LatencyMonitorv to look at which drivers and processes cause the most latency. For me it was nVidia drivers and Intel RST drivers. I uninstalled Intel RST and that helped. Sound drivers can do the same. It is advised against using onboard sound as it usually increases latency.

 

You can try these steps:

  1. Go to CMD in Apps field.
  2. From the displayed results on Apps window, right-click Command Prompt.
  3. From the displayed advanced options at the bottom of the screen, click Run as administrator.
  4. On the User Account Control confirmation box, click Yes to provide the administrative consents to open the command prompt window with the elevated privileges.
  5. On command prompt window, type BCDEDIT /SET DISABLEDYNAMICTICK YES command and press Enter to fix the high DPC latency in Windows.
  6. Once the command executed successfully, close the command prompt window.

Good luckSmiley Happy

 

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