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4 Posts

11-04-2019

Bosnia and Herzegovina

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P73 performance issue after startup

2019-11-04, 8:44 AM

Hello

 

I have an issue with brand new P73. 

After startup I have a huge drop in performance. for example, if I let’s say drag any window around my screen, it is not going smooth, it is moving in slow motion, lag

Here is video of a recorded event (https://youtu.be/ByxR4QNyk1I)

This happens almost every time on system startup and requires restart after which everything working fine.

This happens only when laptop is connected to dock

I have all latest drivers installed for everything

my system:

Thinkpad P73 (Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz (12 CPUs), ~2.6GHz, 32GB RAM,NVIDIA Quadro RTX 3000) + THINKPAD Thunderbolt 3 Workstation Dock 230W + 2xTHINKVISION P24h MONITOR (DP cable)

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73 Posts

12-20-2018

France

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Re: P73 performance issue after startup

2019-11-04, 10:58 AM

This is somewhat of a known issue on several model when an external monitor is used. It is believed to be an Optimus bug.

 

You can try any of these:

 

- restart the graphic driver with Win+Ctrl+Shift+B

- kill dwm.exe is the Task Manager. Eventually several times

- change to "Discrete Only" in BIOS for video settings. This disable Optimus so if you use your laptop on battery often,

probably not a good idea

- some people have mentionned disabling fast boot in Windows settings

 

.

Lenovo ThinkPad P72 - i7-8850H / 48GB DDR4-2666 / 1TB Samsung 970 Evo / 1TB HDD / 17.3" UHD / Intel UHD 630 / Quadro P600 / 99W Battery / Linux distro: openSUSE Tumbleweed
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73 Posts

12-20-2018

France

177 Signins

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  • Message 2 of 6

Re: P73 performance issue after startup

2019-11-04, 10:58 AM

This is somewhat of a known issue on several model when an external monitor is used. It is believed to be an Optimus bug.

 

You can try any of these:

 

- restart the graphic driver with Win+Ctrl+Shift+B

- kill dwm.exe is the Task Manager. Eventually several times

- change to "Discrete Only" in BIOS for video settings. This disable Optimus so if you use your laptop on battery often,

probably not a good idea

- some people have mentionned disabling fast boot in Windows settings

 

.

Lenovo ThinkPad P72 - i7-8850H / 48GB DDR4-2666 / 1TB Samsung 970 Evo / 1TB HDD / 17.3" UHD / Intel UHD 630 / Quadro P600 / 99W Battery / Linux distro: openSUSE Tumbleweed

0 person found this solution to be helpful.

This helped me too

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553 Posts

10-03-2011

Canada

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Re: P73 performance issue after startup

2019-11-04, 13:55 PM

I think it's a quite well known Intel/nVidia/Optimus issue with external monitors. I actually had it on more than one Thinkpad model, and it would eventually gets resolved a couple of months later, after a couple of driver updates.

 

 

Meanwhole, things may improve if you restart graphics driver (  Win+Ctrl+Shift+B ). A more reliable fix, if you rarely use the laptop while not connected to external monitors, is to set video to "Discrete only" in BIOS, leaving only nVidia.

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4 Posts

11-04-2019

Bosnia and Herzegovina

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Re: P73 performance issue after startup

2019-11-05, 15:57 PM

Thanks guys

Disabling windows fast boot solved this issue

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217 Posts

08-20-2014

United States of America

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Re: P73 performance issue after startup

2019-11-06, 1:07 AM

Wow, I'm having a similar issue with the P53. It happens when I'm using my laptop without any monitor (e.g., at a meeting). I then come back to my desk, plug in external montior. It runs like crap and everything stutters. Rebooting with external montior solves the issue. Perhaps I'll try disabling fast boot.

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1 Posts

12-01-2020

United States of America

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Re:P73 performance issue after startup

2020-12-01, 14:28 PM

Hello, I had the same issue, and spent a lot of time with our IT team and Lenovo support trying to correct it.  I finally figured it out on my own.  My P73 has a separate graphics card because I do CAD work (Nvidia Quadro for Mobile)

What fixed it for me was going into the BIOS and selecting "Discrete Graphics" instead of "Hybrid Graphics".  That forces the BIOS never to use the internal graphics card - whether hooked up to an external monitor (via a Thunderbolt dock, or directly connect to the HDMI port), or operating standalone. 

There is some chatter out there on the interwebs that switching to "Discrete Graphics" will brick the laptop.  For me, it fixed this really annoying issue.

It sounds like Lenovo has fixed some of those BIOS issues they were plagued with in late 2018/2019.  BUT, if you find that your computer does hang after changing this graphics setting, JUST BE PATIENT.  Let the computer sit there for a couple of minutes trying to turn on.  In my case, I have 128 GB of RAM.  Anytime I change a BIOS setting, the computer does something that means it has to reestablish the RAM.  And it can take up to 3 minutes to boot up after the time I change a BIOS setting.  3 minutes can feel like an eternity.  I thought my laptop was bricked the first time I did this too.  Went through my IT team, got the machine RMA'd, and Lenovo sent it back saying it was fixed.  Tried it again, and the same thing happened.  Finally after several returns, a tech came out and explained that I had to be patient.  It only has to reestablish the RAM a few times after BIOS changes or adding more RAM, then it doesn't take nearly as long to boot up.

Hope that helps.

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