Turning off screen in Linux

Linux for blind general discussion blinux-list at redhat.com
Tue Oct 18 09:25:35 UTC 2022

I have a thinkpenguin.com penguin pro 11 computer.  It has an alaska rsd
bios on it.  For those with this bios, it's possible to talk to the bios
and control it from another machine using ssh.  The bios can listen to
network through ssh unless the networking capability gets turned off
somewhere along the line.
This is a very modern bios and won't be on many other machines.  To find
out what bios you do have, as root try to run biosdecode and the bios
manufacturer will be identified by the oem: item in biosdecode output.

Jude <jdashiel at panix dot com> "There are four boxes to be used in
defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)


On Tue, 18 Oct 2022, Linux for blind general discussion wrote:

> Unfortunately, it depends on the model of laptop.
> If you're lucky, your model will have a keyboard shortcut that will
> turn the screen off and leave it off until you press that key
> combination again and it works independant of the OS that's running.
> If you're unlucky, you'll have a model that has a screen off key
> combination, but any key press is treated as a screen on command and
> no amount of messing around with OS-level power management or display
> settings will get the screen to stay off.
> And if it's possible to fix the latter behavior, I'm pretty sure it
> would require going into BIOS, and as far as I know, no vendor has
> ever produced an accessible BIOS.
> No idea if it was brand-wide policy at the time, if the brands in
> question still exist, and if policy has changed on newer models if
> they're still around, but I used to own a well-behaved ASUS netbook
> and a poorly behaved Acer laptop(I bought the acer to replace the
> ASUS, but it ended up being a major downgrade in most regards, in
> addition to the Acer's bab behavior regarding the screen, it was
> bulkier, had an SD card slot that left the card sticking out(leading
> to at least one broken card when the laptop bumped against something,
> the ASUS left the SD card flush with the slot's face), and instead of
> full-sized arrow keys that used Fn to convert to PageUp/down and
> Home/End, it had 6 half keys cramed into the space of 3 normal keys
> that was awkward as heck to use with my thick, sausage link fingers).
> Anyways, your best bet is to google turn monitor off [model name] to
> find out what the display off key combo for your model is and see if
> your laptop is well behaved. If you turn the display off and it stays
> off as you start typing, congratulations, problem solved. If
> everything you do cause the monitor to come back on, I'm not sure
> there's anything you can do beyond impotently complaining to a vendor
> who apparently doesn't comprehend that someone might want to use their
> laptop while the monitor is turned off.
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