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Windows 1903 disabled E-ink panel in Yoga Book C930

Anonymous
2019-07-31T19:55:52+00:00

Since the 1903 update, the e-ink panel on my Yoga Book is shut off immediately following POST.  This panel provides the virtual keyboard, drawing tablet and e-reader. The virtual keyboard works in BIOS and in Recovery Environment. It does not work in Safe Mode, but will function on the first boot following Safe Mode. But not thereafter.

I have reinstalled the e-ink firmware and software, and have installed recent updates to the e-ink software as well as a beta of the soon-to-be-released version. Nothing works. This is not a known-issue listed anywhere on Lenovo's site nor can I find another user experiencing this behavior. 

I have reset the computer and re-flashed the BIOS, to no avail. I re-flashed the e-ink panel's firmware.

What's confusing to me is that it'll work as expected on the first boot following a boot into Safe Mode. It will not work with a Clean Boot, either. What's different about the first reboot following Safe Mode? 

Video of issue (3 mins): https://1drv.ms/v/s!

Thanks for any assistance in pointing me in the right direction.

Don

Windows for home | Windows 10 | Devices and drivers

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  1. Anonymous
    2019-08-12T14:14:29+00:00

    Nikhar

    Another update to my issue:

    Windows 1903 is trying to put the E-ink panel to sleep, thinking it's a mouse cursor or something. The keyboard comes up long enough to work (you see this in the video) and I've discovered it will stay up if I start using it immediately. If I stop typing or using the trackpad, Windows puts the e-ink panel to sleep in ten seconds.

    After a LOT of fooling around, I found that unchecking "Let Windows turn off this device to save power" in the keyboard's Power Management tab in Device Manager allows the keyboard to remain active the entire time the computer's awake. Checking "Allow this device to wake the computer" keeps the keyboard from sleeping AT ALL, unless the computer's shut down.

    The good news: I have the keyboard back.

    The bad news: I can't switch to any other e-ink panel function EXCEPT for the first boot following a Safe Mode boot. Everything still functions normally during that one boot.

    Any thoughts? It appears 1903 has changed something, somewhere. I don't know if I'm looking for a registry entry that is putting the panel to sleep in ten seconds or a power management service that's misbehaving. 

    Any insight (especially to what's different about the first boot following a Safe Mode boot) would be most helpful.

    Don

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  2. Anonymous
    2019-08-02T15:51:59+00:00

    Thanks for your reply. Screenshots attached and named w/r/t boot status. The top one is Normal boot. The one underneath is Safe Mode.

    Thanks.

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  3. Anonymous
    2019-08-05T12:23:59+00:00

    Hi,

    Thank you for replying.

    I have been researching on this issue, and as per the Lenovo website I see that the latest firmware for the E-ink panel was released for Windows 10 1803. I would suggest you to get in touch with the Laptop Manufacturer and see if they have any latest firmware available for the E-ink panel.

    Meanwhile, I suggest you to check if there are any hidden devices for Monitor. If you see any hidden devices, uninstall them and check if the issue persists. Follow the steps mentioned below:

    1. Press Windows key + X and select Device manager.
    2. Click on View.
    3. Select Show hidden devices.
    4. Expand Monitors and remove all the greyed out devices. To remove the greyed out devices, right click on the device and select uninstall.
    5. Restart your computer.

    Let us know how it goes.

    Regards,

    Nikhar Khare

    Microsoft Community - Moderator

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  4. Anonymous
    2019-08-04T14:55:31+00:00

    Another interesting development.

    I tried reinstalling the e-ink software while IN Safe Mode.  Overall, it's still the same behavior as in the video with one slight exception:

    Now, there's a brief (5-10 seconds) period at the Windows logon screen where the keyboard reappears. If I use and continue to use the keyboard, it functions. If I don't touch it for ten seconds, it sleeps and won't return until the next boot. While the keyboard may function with continuous use, the other e-ink panel options do not. 

    It's a little thing, but I thought it worth adding.

    Thanks for any assistance.

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  5. Anonymous
    2019-08-02T12:02:38+00:00

    Hi,

    Thank you for writing to Microsoft Community Forums.

    I have watched the video that you have shared and it is surprising to see that the e-ink panel works in the first boot following the safe mode and doesn’t work in clean boot.

    Since the E-ink panel doesn’t work in clean boot, I suspect that an hardware driver could be causing this issue. I would request you to share a screenshot of the Device manager expanding the Display adapters in Safe mode and in Normal mode. Please refer how to include a screenshot in your postto upload the screenshot.

    Note: Make sure you don’t capture any personal information while taking the screenshot.

    Please reply with the screenshots, we will look into this for you, and we will be glad to assist you with this.

    Regards,

    Nikhar Khare

    Microsoft Community - Moderator

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