https://bugs.freedesktop.org/show_bug.cgi?id=96868

--- Comment #8 from almoped@gmail.com --- Whatever way xvidtune -show gathers modelines does not seem reliable as I am unable to reproduce the 586.00 line on AMDgpu, although it seemed so initially.

Testing old fglrx releases I found that 144hz does not work with 14.50.2. The next release I have where 144hz is working is fglrx 15.10.4 and it seems to work with every release there after.