[RESOLVED] How to blind recover from no HDMI output after bios edit

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    User avatar
    ender
    Posts: 146
    Joined: Wed Dec 27, 2017 3:55 pm

    Fri May 10, 2019 7:05 am

    hi,
    LattePanda 4/64 Z8300 Cpu
    But that did not solve my problem.
    The LattePanda still boots into Windows and I am flying blind 'til the Windows boot logo.

    I'm having trouble, I'm getting an image through a 7 "LCD
    but
    I can't get an image from HDMI,
    7 "LCD I removed the image on HDMI does not come unfortunately.
    HDMI cable unplug / plug with HDMI working

    User avatar
    Eli99k
    Posts: 37
    Joined: Sat Nov 17, 2018 2:23 am

    Sat May 02, 2020 4:46 am

    So interesting find. I wasn't able to get hdmi output no matter what I did. But when I plugged it into a higher resolution then 1920x1080. And was able to see the boot and bios screen.

    Hope this helps out.

    User avatar
    Stefan20
    Posts: 3
    Joined: Tue Nov 10, 2020 10:04 am

    Thu Nov 12, 2020 8:10 pm

    Xboxclassic wrote:
    Mon Mar 27, 2017 12:43 pm

    In addition to XBoxClassic's great advice. - Here comes the same trick for a similar problem:

    In case you switched your lattepanda to "use build-in-display [that's display 1] only"
    the HDMI-Output will disappear on booting windows. - LP just shows a black screeen.
    Here's the solution :
    Switch your LattePanda on and give it time to startup Windows completely.
    Continue as follows. You won’t see what you do, but it works, though:
    - Type your password
    - Press Enter
    - Press the Windows-Key plus he letter P
    - Press the arrow-down-key once
    - Hit Enter
    And (by magic ;-) the window screen will appear again on your HDMI display.

    Stefan

    User avatar
    Failquail
    Posts: 3
    Joined: Wed Nov 21, 2018 5:08 pm

    Thu Apr 08, 2021 10:10 am

    I'm also having this issue.

    No output at all untill it boots into an OS...
    The bios reset trick at the beginning of this thread did nothing :(

    Have found a workaround in that i get video out if i plug in the Anker USB-C dock i got for my laptop: The HDMI output on that works fine :)

    Though it would be nice to fix this, any ideas?

    User avatar
    nightside180
    Posts: 1
    Joined: Wed Apr 14, 2021 8:15 pm

    Thu Apr 15, 2021 6:32 pm

    I'm having the same issue right now. I flashed the bios for autoboot and since the first flashing it hasn't been able to display any video.

    User avatar
    LattePanda
    Site Admin
    Posts: 2761
    Joined: Wed Jan 20, 2016 9:09 am

    Fri Apr 16, 2021 3:57 am

    nightside180 wrote:
    Thu Apr 15, 2021 6:32 pm
    I'm having the same issue right now. I flashed the bios for autoboot and since the first flashing it hasn't been able to display any video.
    Your issue is different from that in this post. We suspect you have updated a wrong BIOS for your LattePanda. Pls contact techsupport@lattePanda.com for help.
    Enjoy Tinkering with LattePanda ! :lol:

    Post Reply