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 <http://www.kernel.org/doc/Documentation/fb/modedb.txt>. -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata
