When I tried Ubuntu 18.04 LTS on my HP envy x360, the touchscreen of the laptop is not working. How can I fix it?
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        There are two options as for now, both of them presented in following link: https://bugzilla.kernel.org/show_bug.cgi?id=198715#c14
The first option is to patch kernel manually and install it on your system, I've tested it, it works for my HP Envy x360 15-bq121dx.
Another option is to patch acpi table, people in discussion in link above report successful result. I haven't tried this method yet.
 
    
    
        user829117
        
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        Download GNOME Tweaks from Ubuntu Software. Go to the Keyboard & Mouse section. Then go to Mouse, click Emulation, and select Area.
 
    
    
        Eliah Kagan
        
- 119,640
 
     
    