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18 Posts

05-17-2017

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Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" High CPU Usage

2017-05-17, 15:26 PM

X1 Carbon 5th Gen (20HR) with i5 7300U / standard Toshiba 512GB SSD / 16GB RAM.  Straight out of the box the "Windows Audio Device Graph Isolation" (WADGI) process was using between 15% and (occasionally) 95% total CPU resources, causing the machine to slow to a crawl, with the fan whirring away constantly, not to mention severly impacting battery life.  Tried reinstalling the Conexant Audio driver from Lenovo support website (didn't help).  Uninstalled the Conexant Audio Driver (solved the issue, but soon after reboot Conexant auto reinstalled and the issue returned, thereby validating that the Conexant Audio Driver was the cause.  It must have some pretty poor code ... you'd think they'd test these things, right?).  Got some great support from a chap named Steve at the Lenovo Support desk in Romania, but nothing we tried helped (including doing a bit of registry editing, editing various group policies, attempting to make the Windows Update Foundation service not auto-install updates, etc.).  Steve got back in touch with me a couple of times over a few days and we continued to attempt various things.  At one point I reinstalled the OS using a Lenovo provided USB Recovery flash drive and then updated OS to Win10 Creators (didn't help).  Throughout all of this the Conexant Audio driver continued to run at an average of 20% CPU usage, often spiking as high as 30% (I only saw it go to 90% twice but on one of those occasions I had to shutdown as it just kept climbing higher and higher.  Shut it down when WADGI process reached 95% CPU usage).  The main ambition was simply to get the darn audio driver to not reinstall so I could just use the generic Windows HD Audio driver (which never exceeds 1% CPU usage with the WADGI process and does everything you would need an audio driver to do, without providing a few unnecessary sound enhancement options that you'd probably never want to use, anyway).  Guess what?  Eventually fixed it.  Simplest thing ever.  Just rolled back the driver from Device Manager / Sound / Conexant / Properties / Driver.  Voilá.  The Conexant driver did not reinstall.  Who knew?  I thought that when you roll back a driver it would revert to the last installation performed, and as I had (by now) tried re-installing the Conexant driver around 5 times, I just assumed that it would simply 'rollback' to the previous Conexant installation.  But no, 'rollback' obviously takes you to the previous type of driver, not the last installation, so thankfully I've ended up with the Microsoft HD Audio driver which, as mentioned previously, never runs at more than 0.5% of CPU in the 'WADGI' process.  Now, in an ideal world it would be nice to be able to reinstall the audio driver that was supposed to be compatible with the machine, so CONEXANT and LENOVO (are you listening?) ... PLEASE get it together and fix the darn code!

Lenovo X1 Carbon 5th Gen (20HR) / i5 7300U / 16GB RAM / Win10 'Creators' ver. 10.0.15063
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7 Posts

05-18-2017

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Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 7:37 AM
Hi I tried rolling back as what you mentioned but didn't manage to install Microsoft HD Audio driver; still consuming 15 to 30% CPU resource.

Any other ways to change the default driver?

I suspect it's the main culprit for the constant fan noise.
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7 Posts

05-18-2017

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  • Message 3 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 7:48 AM
I realize just by setting the X1 to be in battery server mode, the WADGI now only consumes 1.5% of CPU resources. Seems like problem solve for the moment?
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18 Posts

05-17-2017

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  • Message 4 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 8:00 AM

It took me quite a lot of various attempts to finally get the driver to rollback to the generic MS HD audio driver.  I deleted any folder named Conexant in C: Program Files and under C:/ users / your name / app data (must 'show hidden files' in windows explorer 'view') / Conexant ... before then rolling back in Device Manager.  Conexant driver kept reinstalling itself but eventually (after maybe the 5th attempt) the MS driver stuck and is stil the default driver, and the WADGI process continues to consume less than 1% CPU.  Eventually I suspect that Lenovo will get Conexant to address the issue and release an updated driver, but in the meantime the driver available from support.lenovo.com is bad news.

Lenovo X1 Carbon 5th Gen (20HR) / i5 7300U / 16GB RAM / Win10 'Creators' ver. 10.0.15063
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18 Posts

05-17-2017

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  • Message 5 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 8:01 AM

What is 'battery server mode'?  I have my battery set to stop charging at 45% as my machine is mainly plugged in all the time.

Lenovo X1 Carbon 5th Gen (20HR) / i5 7300U / 16GB RAM / Win10 'Creators' ver. 10.0.15063
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  • Message 6 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 8:04 AM
Just go over to Windows Action Centre and click Battery Saver at the bottom left hand corner.

With the click, now my WADGI just consumes ~ 1% CPU resource. Not much impact on your daily use of the X1 unless you're doing heavy editing/processing.
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18 Posts

05-17-2017

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  • Message 7 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-05-21, 8:07 AM

Ah, yes, battery saver ... now I know what you're referring to, thanks.  Good workaround, but as I'm nearly always plugged in would prefer to use the generic MS audio driver for now and hope that Conexant releases a fix for their audio driver.  The MS driver is running at 0% to 0.5% CPU usage at all times, which is great.

Lenovo X1 Carbon 5th Gen (20HR) / i5 7300U / 16GB RAM / Win10 'Creators' ver. 10.0.15063
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2 Posts

06-22-2017

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  • Message 8 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-06-22, 3:29 AM

Hi,  I have the same issue.   Will try the driver rollback as suggested but hope we get a real fix soon

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13 Posts

12-03-2017

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  • Message 9 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-12-06, 1:15 AM

Wow, I've been having issues w/ this 5th gen for WEEKS.  Deleting that Conexant driver cleared all the latency spikes I'd been seeing.

 

It's still reverting back every time I delete & reboot but at least this gives me a starting point. 

 

Agree that this thing is written poorly & find it sad/funny at the language errors in the services window.  That re-affirms for me that there is no quality control going on here.

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18 Posts

05-17-2017

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  • Message 10 of 14

Re: Thinkpad X1 Carbon 5th-Conexant Audio Driver-"Windows Audio Device Graph Isolation" Hi

2017-12-06, 8:36 AM

wrote:

Wow, I've been having issues w/ this 5th gen for WEEKS.  Deleting that Conexant driver cleared all the latency spikes I'd been seeing.

 

It's still reverting back every time I delete & reboot but at least this gives me a starting point. 

 

Agree that this thing is written poorly & find it sad/funny at the language errors in the services window.  That re-affirms for me that there is no quality control going on here.


Yes, it's frustrating the way it doesn't allow a driver rollback to 'stick' on a reboot. Then again, the latest update to the Conexant Audio driver is behaving well for me and solved the previous issues re very high CPU usage. Perhaps give it a try?

Lenovo X1 Carbon 5th Gen (20HR) / i5 7300U / 16GB RAM / Win10 'Creators' ver. 10.0.15063
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