1) Does leaving Secure boot off increase the chance of being attacked significantly? Can I turn SB back on with the option "Windows and 3rd party CA"?
2) The biggest reason I bought this laptop is to use its touch- & stylus-screen. But nothing works atm. The screen is not responsive to my touch, and the Graphic Tablet app says "No stylus found". I've updated the nVIDIA driver to the newest. Here is my xinput result FYI:
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⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Microsoft Surface Keyboard id=7 [slave pointer (2)]
⎜ ↳ Microsoft Surface Keyboard Mouse id=8 [slave pointer (2)]
⎜ ↳ Microsoft Surface Keyboard Touchpad id=9 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Video Bus id=6 [slave keyboard (3)]
↳ gpio-keys id=10 [slave keyboard (3)]
↳ gpio-keys id=11 [slave keyboard (3)]
↳ Microsoft Surface Keyboard id=12 [slave keyboard (3)]
4) I installed Xournal++ from the Software Manager but can't run it, even after a machine restart. Every time I try, the mouse icon turns to "thinking" but nothing happens next.
So... could you help? Thanks!