I do not have kobo H2O.
but using this
post, I changed qt touch driver.
who want to test,
copy file
libKoboTS.so to folder:
#kobolauncher
/.kobo/vlasovsoft/Qt/plugins/mousedrivers/
and or
#Kobo Start Menu
/.kobo/kbmenu/Qt/plugins/mousedrivers/
note: compatible with kobo glo (original and multitouch).
New Version
use at your own risk