Proot do not work on Android subsystem for Chromebooks as on standard android operating system

[JanuszChmiel]

Expected Behavior

Proot should work by The same way like on normal Android devices.

Actual Behavior

Proot do not allow me to use Xvnc on chrooted Linux distributions on Android on Chromebooks.
I Am getting many errors related to The fact, that ffunction not implemented.
Proot do not allow me to run Linux distribution by sharing TMP between Termux and Chrooted Linux distribution.
It is also impossible to simply set The DISPLAY variable to
export DISPLAY=:0
In this case, for example, Xvnc will never allow The Mate desktop environment to be executed. it simply halt without error messages.

Steps to Reproduce the Problem

Compile Proot me in Termux
Install The proot distro from Termux by typing
apk install proot-distro
Try to execute some Linux distribution with shared TMP option for example by typing
proot-distro login --user janusz ubuntu-lts --shared-tmp
Install some even light veight desktop environment such as Lxde.
Install Tigervnc in Ubuntu. You can choose also other supported distros by The proot-distro script.
type
export DISPLAY=:0
on chrooted Ubuntu distro executed by Proot me.
type
Xvnc :0 -SecurityTypes None &
Observe how many error messages related to The fact, that some function not implemented will appear on The terminal.
Try to start Lxde desktop environment.

Specifications

• Proot/Care version:
• Kernel version:
• Host distribution:
• Guest distribution:

Command Output

Inline log

-OR-

Attached log
Thank you vor your help.
I Am visually impaired user with no sight atall. And I do not know, why Proot can not work by The same way on Chromebooks Android subsystem like with standard Android.
Thank you very very much for AN explanation.
Because there are very probably elite C language experts here so I AM kindly pleasing you for An programmers explanation.
if is it technically possible to implement all needed functions.
Thank you very very much for your answer.

[JanuszChmiel]

I have found out, that
warn] epoll_wait
function is not implemented while running X11 apps on Android subsystem for Chromebook.
Please, is it possible to implement this missing function?