I noticed ubuntu-restricted-extras is not present in the system image. Would installing it help in this regard (though I'm aware it's not recommended)?

@TheKit Your fix has been applied on surya kernel by @ywmaa. Users have reported on Telegram that UI freeze are gone.

For information, before closing this thread : The flickering issue has been fixed in 20.04 devel channel : https://gitlab.com/ubports/porting/community-ports/android10/xiaomi-poco-x3/xiaomi-surya/-/commit/9d36e8d5986b2bf21afed7feff46baaa7c7535c9 Thanks to @_Joao_ and everybody on pocox3 telegram channel for their help

@eheintzmann Yes now it works. Is ubuntu tocuh 20.04 not yet available for the poco x3 nfc?