https://bugs.freedesktop.org/show_bug.cgi?id=110865
--- Comment #6 from Martin mwolf@adiumentum.com --- Sadly it did not help. the MCLK is still fixed at 2000MHz.
How can I verify that I did everything correctly? I just rebuilt Kernel 5.2.6 from Fedoras srpm and added the patch in the spec file.
Or could it be that I have two different 1920x1200 screens? one from HP and one from Dell?