I have just tested the specially prepared 3.13.11-03131106-generic
kernel you gave me,
and the usual error IS THERE. Using the last few new kernels, the
typical scenario is this:
(1) the correct picture is there for 1 or at most 2 seconds
(2) then the view is wraps around, asif the horisontal synchron
position was at the two-third of the lines
(3) then within additional very fey seconds the screen becomes
white, except for the topmost few scan lines
(4) and again pretty soon, the whole bright area begins to
vibrate between bright white and less bright
And as soon as I boot back into an earlier kernel but using the same
Ubuntu root partition, then the screen is steady, and I can work, e.g.
write this comment.
Many thanks for your help and valuable time,
Peter.
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https://bugs.launchpad.net/bugs/1386534
Title:
kernel dependent deterministic view crash on X startup
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