I did a search for "kernel parameters debian video=" and got many hits, but not this one. It was probably on about page 519.
Van Snyder composed on 2025-07-23 13:41 (UTC-0700):
On Wed, 2025-07-23 at 00:03 -0400, Felix Miata wrote:
For troubleshooting purposes, inxi -G with no other options is little short
of useless. With graphics issues, best to provide inxi -GSaz --vs. Bookworm's
inxi is broken, so should be upgraded from upstream using the -U switch as
superuser after unblocking the -U switch in /etc/inxi.conf, or by upgrading
the Debian inxi package to the backports version. e.g.:
# inxi -GSaz --vs --za --hostname
Thanks for this advice. It revealed what I believe I need to know: What
is the name of the interface for the display that I want to activate?
I saw a message that advised putting "video=HDMI-A-1" (which is the
name revealed by inxi) onto the vmlinuz line using a
GRUB_CMDLINE_LINUX*= line in /etc/default/grub. Would that make that
display the only one, or simply make it "exist" along with ones that
are detected to be working during boot?
inxi reported
empty: DP-1, DP-2, HDMI-A-1, HDMI-A-2, HDMI-A-3, HDMI-A-4
There's only one HDMI connector, so I assume the name I ought (maybe)
to put into the vmlinuz option is not DP-* or HDMI-A-[234].
HDMI-A-1 would be kernel name, which is the most likely name you would need to use
with video=. With video=HDMI-A-1, whatever its continuation that follows will
apply exclusively to that output. If you wish the same mode applied on all
displays, leave out the output name, e.g. video=2560x1440@60. This is all in