On Sun, Dec 27, 2020 at 05:08:27PM -0500, The Wanderer wrote: [...] > I have the impression that things have by now developed to the point > where a physical serial-port cable (of the classic type of serial port > and cable, whose connectors can be visually confused with a VGA port in > some cases) is no longer necessary, which is good, since if we ever had > such a thing it was at least back in the days of PS/2 keyboards and mice > and might have been back in the days before our home computers had > internal hard drives. "Modern" computers tend to lack serial ports (sometimes a pity, but well...) Still I doubt it would be any help. You made a credible case that there is a hard lockdown at the handover from the BIOS to GRUB. You'd have to be very lucky for GRUB to utter a last sigh over serial before that. My impression is that the video card reacts allergically to some modeset attempt by GRUB and this causes a pretty low level lockup. Cheers - t
Attachment:
signature.asc
Description: Digital signature