Date: Fri, 7 Apr 2023 12:32:30 +0200 From: Andreas Kusalananda =?utf-8?B?S8OkaMOkcmk=?= <andreas.kahari@abc.se> To: questions@freebsd.org Subject: Re: Can not boot without monitor attached Message-ID: <ZC_xPhy-SvLfpcx0@harpo.local> In-Reply-To: <ZC_lH8_S835ihvRk@harpo.local> References: <ZC_lH8_S835ihvRk@harpo.local>
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On Fri, Apr 07, 2023 at 11:40:47AM +0200, Kusalananda Kähäri wrote: > Hi, > > I'm trying to set up a headless FreeBSD 13.1 system. I've done so > successfully before on this particular machine, but for whatever reason, > after a complete reinstall, it doesn't want to boot without a monitor > attached via HDMI. Since it never shows up on the network I'm assuming > it never even gets past the boot prompt. > > If I plug in a HDMI cable to a monitor before booting, it boots as > expected. Plugging in a monitor after unsuccessfully trying to boot > without a monitor does not work (black display). > > I tried adding -P to /boot.config, but this had no effect. The system > is, apart from that, fairly vanilla. > > The system is a fan-less Chinese(?) "Basoaro" system with an American > Megatrends BIOS, but I can't find anything in the BIOS that seems > relevant, and since it *used* to be possible to boot the system without > an attached monitor, I'm assuming it's not a BIOS-related issue. > > Whatever I did before to get it to boot headless, I've forgotten what it > was and need a reminder and/or pointers from you guys. > I believe my issue might have been solved by simply setting console="efi" ... in /boot/loader.conf This seems to not block the boot process when there's no attached video or serial console. I was initially afraid of setting a value to this setting as I didn't want to get locked out completely with no way of accessing the system, but I don't know whether that's even a possible risk. Thanks for reading, -- Andreas (Kusalananda) Kähäri SciLifeLab, NBIS, ICM Uppsala University, Sweden .
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