How to fool a laptop into thinking a monitor is connected? (lemmy.kde.social)

submitted 9 months ago by tubbadu@lemmy.kde.social to c/linux@lemmy.ml

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Hello! I converted an old laptop with a broken screen into a home server, and it all works well except for one thing: when I reboot it (via ssh), if no screen is connected, it will get stuck and refuse to boot. as soon as I connect an HDMI monitor, the fans will start spinning and it will start booting as usual. Then I can remove the HDMI and it will work flawlessly. I don't know if this is a linux problem, a GRUB problem, or a firmware problem.
Any idea on how to solve this, or on how to fool it into thinking a screen is connected? The problem is not the lid switch as I removed the magnet from the screen, so it thinks the lid is always open

Thanks in advance!

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[-] comiconomenclaturist@lemmy.world 3 points 9 months ago

I had an old laptop that I removed the screen from and it still booted. Perhaps if your screen has broken in a way that the GPU detects as a hardware failure, it might prevent booting? Maybe removing the screen entirely might solve the issue? Or at least disconnecting the internal cable from the screen to the motherboard..

[-] tubbadu@lemmy.kde.social 1 points 9 months ago

Yes I already disconnected if, but still nothing :(

this post was submitted on 22 Jan 2024

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