D20804: RFC: Try getting the X keyboard grab multiple times

[David Edmundson]

davidedmundson added a comment.


  > Arguably it won't help us with all cases because the clients would have to voluntarily participate in the protocol.
  
  Yes. I'm not pretending it will.
  
  ---
  
  > I wonder whether it's worth fixing this bug on X11 at all.
  
  There is a way to forcefully take a grab inside X internals.
  
  The only way this is exposed publicly is via the shortcut key XF86Ungrab
  
    setxkbmap -option grab:break_actions
    xdotool key XF86Ungrab
  
  It was meant as a dev tool so you could switch to a console to debug locks. 
  Using this is a horrific idea as it introduces a keyboard shortcut to circumvent the screen locker!!
  
  There's no other public API, though I don't see why one couldn't be added.
  The bigger problem is that the client side has no indication that it loses it's lock which leaves it in a corrupt state when you log in.
  Adding that retroactively is the part I think is pragmatically impossible.

REPOSITORY
  R133 KScreenLocker

REVISION DETAIL
  https://phabricator.kde.org/D20804

To: davidedmundson, #plasma, #kwin
Cc: zzag, broulik, plasma-devel, jraleigh, GB_2, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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