XOrg cannot switch to VT virtual terminal : unsupported maximum keycode

[hanasaki-gmail]

Found a similar reference:
https://forums.gentoo.org/viewtopic-t-1104128-start-0.html

Upon double checking, the 5.10.x debian testing bullseye kernel that 
"works" also seems to report the same warning.  This seems to narrow it 
down to something amiss with perhaps the FB config of the customer 
kernel?  Thoughts on what to check for that should/shouldnt be set?

Issue : ^Alt-4,5,6 etc seems to switch from Xorg to VT with black


On 2/10/21 20:43, Hanasaki Jiji wrote:
> ^Alt-4,5,6 etc result in the following in syslog.  The screen "seems" to 
> lock (become unresponsive) however the ^Alt-#ofXorgScreen does bring 
> back the GUI.   Note that this is a custom 5.x kernel.  Booting the 
> bundled Debian Testing Bullseye 5.10.x kernel works fine on the exact 
> same system.  (Asus VivoBook Ryzen 3700u)
> 
> Thus, I suspect it's something in the custom kernel build.  Thoughts on 
> what the cause could be, diagnosis and/or fix?
> 
> TIA
> 
> Feb 10 18:25:29 debian gnome-shell[3681]: The XKEYBOARD keymap compiler 
> (xkbcomp) reports:
> Feb 10 18:25:29 debian gnome-shell[3681]: > Warning:         
>   Unsupported maximum keycode 569, clipping.
> Feb 10 18:25:29 debian gnome-shell[3681]: >                   X11 cannot 
> support keycodes above 255.
> Feb 10 18:25:29 debian gnome-shell[3681]: Errors from xkbcomp are not 
> fatal to the X server