[SOLVED] Keyboard perpetually repeats last key pressed.

Muzzy · 2023-10-17 16:07:35

I have bought a new keyboard, the White Shark Templar. This keyboard has 19-key anti-ghosting features as i confirmed on my Windows boot.

However under arch linux if i press 7 or more keys, the keyboard itself seems to become inactive while the keydown event gets repeated indefinitely for the last key pressed.

Therefore i am lead to believe it is a software difference of some kind.

I would greatly appreciate some help with this.

Last edited by Muzzy (2023-10-18 20:24:00)

twelveeighty · 2023-10-18 00:41:36

Please start by posting relevant logs. There's nothing really to go on without that information to identify the problem. The problem could be hardware, kernel, X/Wayland, etc.

solskog · 2023-10-18 01:02:26

What is the typing test under console terminal without window manager, Xorg, wayland involved?

seth · 2023-10-18 06:40:13

Did I miss an evolutionary update or do gam0rz now operate the keyboard all hands and feet?
wtf does anybody need a 19-key roll…whatever.

The autorepeat is probably a red herring and just happens b/c the OP is resting their hands toolong™
https://www.reddit.com/r/linux_gaming/c … _rollover/

Does the keyboard come w/ a special driver on windows?
Does it have a HW switch between 6 and n-key rollover?

Muzzy · 2023-10-18 11:49:12

Here is the Xorg log and the output of journalctl -k.

Regarding the typing test, here is the output of

showkey --keycodes

[muzzy@desktop ~]$ sudo !!
sudo showkey --keycodes
kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]

press any key (program terminates 10s after last keypress)...
keycode  28 release
jkhsfdkeycode  36 press
keycode  37 press
keycode  35 press
keycode  31 press
keycode  33 press
keycode  32 press
ddddddkeycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
dddddddddddddddddkeycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
keycode  32 press
ddddddddddddddddkeycode  32 press

It just loops that last part until i replug it in. And yes it happens even under say tty2.

Regarding a special driver, all windows popped up with was a ready to use notification after a couple seconds, i had to manually install no extra stuff.
I have searched the keyboard and read the box it came in a couple times and to my knowledge there is no hardware switch for NKR.
Also I'm not sure about evolution of gamers or the utility of 19 key rollover I'm just a guy that needed a new keyboard and took one off a shelf, It's nice to have your peripherals work the right way regardless.

solskog · 2023-10-18 12:34:19

This could be a limitation from firmware side. Some firmware allow a keybinding to enable/disable NKRO or 6KRO. E.g: https://docs.qmk.fm/#/faq_misc?id=nkro-doesnt-work
Commercial keyboard doesn't support firmware flushing, but you could check on manufacture if they are willing to tell you possible keybinding.

seth · 2023-10-18 14:09:35

You wanted to test that w/ evtest.

all windows popped up with was a ready to use notification after a couple seconds

Check the device properties, that very much sounds like windows fetched a driver over the network.

However that won't help you to activate NKRO on linux (or anywhere else) - esp. not if it's part-emulated by the driver.
You'll have to settle for pressing 6 keys at once or ask the vendor how the NKRO is activated.

Muzzy · 2023-10-18 20:23:35

Gotcha, I guess there is no other more convenient way. I'll mark the thread as solved.

Arch Linux

#1 2023-10-17 16:07:35

[SOLVED] Keyboard perpetually repeats last key pressed.

#2 2023-10-18 00:41:36

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#3 2023-10-18 01:02:26

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#4 2023-10-18 06:40:13

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#5 2023-10-18 11:49:12

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#6 2023-10-18 12:34:19

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#7 2023-10-18 14:09:35

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

#8 2023-10-18 20:23:35

Re: [SOLVED] Keyboard perpetually repeats last key pressed.

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