https://bugs.freedesktop.org/show_bug.cgi?id=108514
--- Comment #8 from Werner Lueckel werner.lueckel@googlemail.com --- more tests with flickering screen:
- check modelines "xvidtune -show -display :0" 14.04 trusty (NO flickering) "1680x1050" 122.00 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync 18.04.1 LTS (Flickering screen) "1680x1050" 122.00 1680 1712 1776 1904 1050 1051 1054 1066 -hsync -vsync -> exactly the same
- on 18.04.1 LTS (1) with flickering grafic screen: repeatedly switch the screen-mode (xrandr): to 1440x900 and back to 1680x1050 -> typically after 2...5 repetitions the screen is o.k. and stops flickering
(2) BUT: when the screen awakes from "sleep" -> the flickering starts again! switch to text-console (F1) -> flickers too! switch back to grafic (F7) -> flickering continues
the I may continue with (1) OR (frustrated): BOOT 14.04 trusty; which still works fine; excellent grafic; never flickers; ... and start working!
- BUT: what can I do when support for "14.04 trusty" ends?