This bug was fixed in the package kde-workspace - 4:4.9.4-0ubuntu0.2
--------------- kde-workspace (4:4.9.4-0ubuntu0.2) quantal; urgency=low
* Add kubuntu_revert_285553e.diff to revert upstream commit 285553edce61f65a88d9067136bf138e44efb149 as it causes brightness flickering on some systems (LP: #1088150) -- Philip Muskovac <email address hidden> Sat, 05 Jan 2013 17:36:32 +0100
This bug was fixed in the package kde-workspace - 4:4.9.4-0ubuntu0.2
--------------- 4-0ubuntu0. 2) quantal; urgency=low
kde-workspace (4:4.9.
* Add kubuntu_ revert_ 285553e. diff to revert upstream commit 1f65a88d9067136 bf138e44efb149 as it causes brightness
285553edce6
flickering on some systems (LP: #1088150)
-- Philip Muskovac <email address hidden> Sat, 05 Jan 2013 17:36:32 +0100