04-20-2018 06:43 AM
I have tried to install windows 10 enterprise 2016 LTSB, on two T480s and both have the and issue now with a black laptop display when I close the lid open the display again ("when I close the lid" is set to sleep).
The windows installation is from the iso on a usb. And just after the Windows installation I have the issue. and it is still there after full windows update and lenovo update. When I got the 2. laptop it worked with the orginal image (start the pc for the first time and let it finish), but after re-installation I got the issue.
I have tried a few things without luck (turn of fast startup, disable secure boot, monitor profile update) but i cant make it work.
If I attach an external monitor I get a dispaly on this external monitor (via hdmi), and I can see one Generic PNP Monitor (the external monitor), it seems like that the internal display is disconnected if choose show hidden devices in the device manager, and can't be enabled (i have also tried to rescan for new hardware without any luck). When I reboot the display is back again.
I dont have this issue on the t470 model with the same approach.
What do I miss, some driver/windows setting or ?
Thanks in advance
Solved! Go to Solution.
04-22-2018 10:43 AM - edited 04-22-2018 10:46 AM
When you put the T480s in sleep or hibernate mode manually (instead of by closing the lid), does it wake up successfully?
If you change "when I close the lid" so that it doesn't perform an action (instead of sleeping), does the problem still occur when you close and open the lid?
04-22-2018 11:06 PM
I have tried to set the lid to do nothing, and this works (close/open without any problems). it also works if I set the power button to sleep or hibernation (instead of power down), then it resumes correct and I get the display back (I have already used this as a temporary solution for the one user who got the first T480s).
04-24-2018 03:24 AM
This is exactly the same behaviour as I noticed on a T480s.
Instead of Windows 10 LTSB 2016 we use the current Branch 1709 and with this version, it works fine. I think it's a problem with the current BIOS or display driver. And I hope it will be fixed soon by Lenovo Support.
05-02-2018 06:02 AM
Currently we have only one T480s in your managed setup. And as workaround we have installed CB instead of LTSB2016. Please can you keep me informed in this thread if you have new information about this case? Many thanks.
05-07-2018 12:05 PM - edited 05-07-2018 12:06 PM
@martin- I have the same issue with Windows 10 Enterprise. Did you contacted Lenovo? Any news from Lenovo? Many thanks for your answer.