Hi!
It's a common problem, not a lot of people get this right. When I boot with lang=ru cheatcode, /etc/init.d/knoppix-autoconfig automatically selects xkeyboard=ru, too. The problem is that to get any work done I still need to go to keyboard layout settings, add 'us' keyboard and select some switchng hotkey (it's impossible to type commands or URIs with 'ru' layout, you'll get ыуечлиьфз -щзешщт пкзЖсекд_ыршае_ещппду гыбкг and реезЖ..лтщззшчютуе. instead). It's not a grave problem in Knoppix (not only I can add xkeyboard=us to boot parameters, there is even a GUI to setup layouts), but it can be solved completely in different ways:
1) Add another cheatcode which would set XKBOPTIONS in /etc/default/keyboard, so it would be possible to boot like this: knoppix lang=ru xkeyboard=us,ru xkbopts=grp:ctrl_shift_toggle
2) Copy the logic from, for example, d-i (https://sources.debian.net/src/conso...n.config/#L487): they first set the layout[s] based on the locale, adding 'us' if needed, then add -option grp:alt_shift_toggle,grp_led:scroll if there is more than one layout (also, lv3:ralt_switch if the layout is single, but non-US).
Best regards,
Ivan
Cisco SG300-52-Port Gigabit Managed Rack Mountable Network Switch
$44.95
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97
ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301
$140.23
HPE ARUBA 2530-24G J9773A PoE+ 24-PORT GIGABIT ETHERNET SWITCH J9773-60201
$93.24
Ubiquiti Networks UniFi US-8, 8 Port Ethernet Switch, Used with Power Supply
$42.50
NETGEAR GS108 ProSafe 8-Port GbE Unmanaged Switch w/ Power Adapter
$14.99
Dell X1026P E11W 24-Port PoE Smart Managed Gigabit Ethernet Switch 2X SFP
$25.00
NETGEAR GS305 5-Port Gigabit Ethernet Unmanaged Switch Plug n Play New Sealed
$18.50
HP JG937A Flexnetwork 5130-48G PoE+ 48-Port Gigabit Network Switch
$55.95
New Netgear 8port Ultra60 PoE Multi-Gigabit 2.5G Ethernet+ Switch MS108EUP100NAS
$189.00