@vicamo: Sorry for delay. I've tested / now running the kernel from the PPA on my Acer Chromebook R11 and can confirm touch screen is still working.
timo@timo-Cyan:~$ uname -a Linux timo-Cyan 5.4.0-42-generic #46+lp1881319-Ubuntu SMP Tue Jul 14 06:40:05 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
@vicamo: Sorry for delay. I've tested / now running the kernel from the PPA on my Acer Chromebook R11 and can confirm touch screen is still working.
timo@timo-Cyan:~$ uname -a Ubuntu SMP Tue Jul 14 06:40:05 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Linux timo-Cyan 5.4.0-42-generic #46+lp1881319-