On 4/2/25 12:48 PM, Dave Close wrote:
Looking through the dmesg output on the problem machine and on another machine (also Fedora 41) with the same monitor attached, I don't find any references to the monitor at all. It appears that monitor detection doesn't happen until the normal syslog process is running. I do find a reference to it in /var/log/messages, but only on the working machine. I don't find any messages indicating failure to find the monitor on the problem machine.
What is the video device? "lspci" output Check "journalctl -b" for lines with "drm" or "modesetting".
Of course, the motivation for trying to get the serial console working is not really the reason for my post. My reason is, why doesn't the serial console seem to work? What am I missing in the process?
Do you see the options in /proc/cmdline after it has booted?
I might be focusing on the serial console for Fedora when what I really need is serial console access to the BIOS boot process. That is the only way I see to boot from a USB drive (with a different system), just to see if the problem is a configuration error in Fedora. I now realize that by the time Fedora starts, that process is done. Maybe I should be asking if there is a way to get serial access before Fedora.
If you aren't getting a display for the BIOS boot then your hardware is broken. Only expensive enterprise systems give you serial access to the BIOS.
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