You have been subscribed to a public bug:
On recent update from 15.04 to 15.10, the new 4.2 kernel is
associated with graphics instability after a few seconds of GUI use
with mouse and keyboard making the GUI unusable. See another
person's same experience with intel graphics here:
askubuntu.com/questions/688649/kubuntu-wily-upgrade-screen-glitch
Downgrading to the last 15.04 kernel solves my issue.
See result of ubuntu-bug linux from the terminal attached.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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Kubuntu Wily upgrade screen glitch with 4.2 kernel
https://bugs.launchpad.net/bugs/1509556
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which is subscribed to linux in Ubuntu.
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