> It should always be able to use simpledrm after that 8 seconds in the
worst case.

Actually that's not necessarily true. There could be a race if i915 (or
whatever) takes close to 8 seconds to load. If Plymouth gives up waiting
because that's at the timeout then it will usually try to use simpledrm.
But if i915 is also loading at the same time then it may have deleted
simpledrm (/dev/dri/card0) and prevent Plymouth from using the graphics
device it had chosen.

If we can prove such a race exists then Plymouth could be modified to
try /dev/dri/card1 in the case that /dev/dri/card0 has been deleted by
the driver of card1.

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https://bugs.launchpad.net/bugs/2063109

Title:
  Plymouth uses the text-based boot screen on some machines, sometimes

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