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32 Posts

09-20-2018

Canada

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-01-22, 21:13 PM

Yeah, this is getting pretty silly. There was another thread about touchpad and trackpoint firmware not updating correctly which resulted in both of them not working at all. I wonder if it's related in anyway?

 

I would like to reiterate that at least for myself, ELAN drivers or not, the floaty, laggy touchpad will happen, just like in the video posted a few replies up. Gotten pretty good at using the trackpoint now though!

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32 Posts

09-20-2018

Canada

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-03, 8:13 AM

I've had to do some work remotely the past week and using a mouse isn't an option. Clicking through Ableton and having the touchpad randomly start floating on me is getting infuriating. How is this thread 4 pages long with no response from a Lenovo rep?

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11 Posts

01-01-2019

United States of America

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-07, 15:37 PM

I suppose we just need to keep posting in this thread to keep it on the front page. Since there isn't an easy answer for this solution, I can imagine "tech support" is hoping we just decide to accept our fate and move on. I certainly refuse to do that, given the price and supposed "quality" of these machines. What worth is there in a well built computer when actually using it is infuriating?

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18 Posts

08-23-2018

Germany

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-07, 15:59 PM

I've also had the issue cropping up again with the newer drivers. It's beyond annoying at this point.

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6648 Posts

10-29-2009

New Caledonia

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-13, 2:59 AM

All,

 

We want to investigate these reports of BSOD and touchpad lag.  To start, can someone share a minidump and/or full dump?  Full dump would be preferable, but we can also look at a minidump as the first step.  There were some google drive links earlier in this thread, but they are not working today.  Thank you.

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11 Posts

01-01-2019

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-13, 14:15 PM

I have been lucky enough to avoid BSODs, but the random bouts of lag seem to happen frequently (and one even started just now as I type this). Is there any sort of diagnostic tool I can use to retrieve an operational status or log from the trackpad?

Be sure to also see that there have been several suggestions to install various versions of the drivers, some that aren't even specifically for the trackpad in the P52. While most of them allow the trackpad to function, we continue to see the same lag regardless of which driver we use.

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6648 Posts

10-29-2009

New Caledonia

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-13, 14:18 PM
 wrote:

I have been lucky enough to avoid BSODs, but the random bouts of lag seem to happen frequently (and one even started just now as I type this). Is there any sort of diagnostic tool I can use to retrieve an operational status or log from the trackpad?


To debug the lag problem, please use the latest driver from the lenovo support website (and not some other driver from elsewhere).  Then, reproduce the problem and follow the steps in the attachment to collect a log and share it here.  Thanks for your help with this.

 

 

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11 Posts

01-01-2019

United States of America

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-13, 14:56 PM

I've been "lucky" enough to have a number of lag events this morning, so I've already been able to capture a "clean" log and a "lagging" one. I should also note that clicking the "Reset Driver" button caused the pointer to become unresponive for a fraction of a second, but failed to remove the input lag once it started moving again. I'll PM you the log files (since I haven't been able to read through them to confirm there is no PI included).

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32 Posts

09-20-2018

Canada

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-16, 5:00 AM

I've pm'd you a log file.

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11 Posts

01-01-2019

United States of America

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Re: P52 - ELAN Touchpad driver (ETD.sys) issues (latency spikes, BSoD)

2019-02-18, 16:19 PM

Any update on this?

Side note: A previously unmentioned but infuriating side-effect of the trackpad latency is that "tapping" the the pad to select an onscreen element is very hit-or-miss. That is, since the trackpad isn't registering input quickly enough, if you tap quickly (in my normal usage, this happened maybe 1 out of 3 times without trying to trigger it), no tap is registered at all.

This would seem to illustrate that it isn't a problem with the cursor or input being "rendered late", but rather that the trackpad itself does not detect input properly.

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