Originally Posted by baz77
cool you found it. Now what was the fix?
Didn't really find the fix, but I was triggered by someones remark in that thread.
In Developer Options I had Disable Hardware Overlays
untagged. I tagged it, which solved the flicker-issue for me on both Xperia Z and Xperia Tablet Z.
Not sure if it works for you since I have a Sony instead of a Samsung, but worth a try.
Sony Xperia Z C6603 / KitKat 4.4 / cm-11-20131209-NIGHTLY-yuga
Sony Xperia Tablet Z SGP321 / KitKat 4.4 / cm-11-20131209-NIGHTLY-pollux
Samsung GALAXY Tab 10.1 p7500 / Jelly Bean 4.2.2 / cm-10.1-20131208-NIGHTLY-p4
Samsung GALAXY SII i9100 / KitKat 4.4 / cm-11-20131209-UNOFFICIAL-Grift-i9100
HTC Desire Bravo / Jelly Bean 4.2.2 / cm10.1-20130524-UNOFFICIAL-Vijendra
Tronsmart Mini TV PC Box RK3188 MK908 / Jelly Bean 4.2.2 / 104j2 02-08-2013