10-10-2016 07:14 AM - edited 10-10-2016 07:15 AM
Could you not resolve the issues of bluetooth driver and 2nd user log in? I'd try to resolve those because a high cpu usage means I cannot use the laptop on battery but also will probably shorten lifespan of the cooling fan and perhaps other components due to heat! (PSU and motherboard components).
Therefore I did the OneKey recovery and then updated to windows anniversary update and removed bloatware whilst installing some software and update all drivers and made sure PIN login is working (pin login breaks easily!) and THEN make a OneKey recovery backup so I don't ever need to go through that lenghty process again.
I will setup a windows file backup soon too so my files are always backed up automatically when I connect the external hdd just in case! (Same hdd that has OneKey recovery backup on it) There are wireless NAS type home HDD available that will do this wirelessly and automatically through the router, that will be the perfect solution.
10-10-2016 11:34 AM
With my recovery image, i was unable to get bluetooth working.
I & my work mates have tried everything, but without success (working in an IT company).
Everytime after reboot, bt was marked with code 19 in devmanager.
The 2 Uer issue was solved by recovery image, but sadly not bluetooth.
So the only way to get BT working was a clean install.
All is working as expected but NOT ymc.exe.
Because i have spent much time to get the ypga 900 loaed with stuff i want, i dont want to feedle around again with this! I can live with not working automatic switch to tablet mode.
But its really sad that you bougth a 1400 euro hybrid book and have to feedle around with such "basic" things.
Anayway, thx for your help, maybe lenovo tech support is ocmming back to me anyday.
If not, i will live with it.
10-10-2016 12:13 PM
Well isn't it funny, just when I responded to this issue I made sure I downloaded the latest YMC and other drivers from the lenovo website. Surely enough, I have the same issue yet again. Which means I'll have to try system restore or even backup to the OneKey recovery backup I made.
Note: Do not install the Lenovo specific drivers, specifically the Yoga Mode Control drivers, from the lenovo website. The "silent" installs just seem to break everything and there isn't an option to uninstal or downgrade.
10-10-2016 12:20 PM
So it seems that it hasn't todo with Windows, it's just an crazy bug of Lenovo yoga mode control.
My workaround is to just disable the ymc.exe service in service manager (services.msc).
This works for me!
The only downside: you have to manually switch to tablet mode, when you swap Tha display back.
I can live with that, maybe it's also a solution for you?
10-10-2016 02:48 PM
10-11-2016 03:37 AM
Thats also a solution but not a nice one.
What if you are distracted or forget to terminate the processes.
I am thinking of the following workaround:
Will try this in the afternoon and report back.
10-11-2016 03:58 AM
I did a one key recovery restore. After recovery I found that rundll32 for PaperDisplay was running high until I updated Lenovo Settings and Lenovo Companion and Lenovo Account Portal through the Windows App store. Don't install drivers from lenovo support website, they seem to break things again. Instead let Windows do the driver updates for you or Lenovo Companion. Now laptop running fine with multiple accounts logged in.
10-12-2016 11:12 PM
As a workaround until its fixed, disable service "Yoga Mode Control" (ymc.exe) under windows services.
Sure you loose the automatic tablet mode question, when you wrap around the display.
I will try to solve it with an workaround posted here:: https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/Yoga-900-Excessive-Fan-spin/m-p/3451758#M4...
Sadly i didnt found time to try it.