alsa compilation for ubuntu 20.04

Hello dear all,

I have compile my ubuntu kernel with CONFIG_SND_MAX_CARDS up to 256 to 
get more id cards.
Actualy i search to compile alsa-lib and alsa-utils with 
"--with-max-cards=256".

This works on ubuntu 18.04

Compilation and installation ok.
But when i try aplay -L i get all alsa loopback and sound card with 
default: sysdefault: front: surround.... but hw, plughw, dmix and dsnoop 
don't appear as normal...

see alsa-info to 
http://alsa-project.org/db/?f=d115fd0969f2b51ef57545939d59ee387177d081

I use this:
sudo su
sudo mkdir /usr/src/alsa
cd /usr/src/alsa
git clone git://git.alsa-project.org/alsa-lib.git alsa-lib
cd /usr/src/alsa/alsa-lib
./gitcompile --with-max-cards=256
make install

cp /usr/lib/libasound* /usr/lib/x86_64-linux-gnu/

cd /usr/src/alsa
git clone git://git.alsa-project.org/alsa-utils.git alsa-utils
cd /usr/src/alsa/alsa-utils
./gitcompile --with-max-cards=256
make install




Thanks in advance for the help.