I have a radeon 5700XT with 2 screens running at 144Hz and have this problem when I wake up my fresh install unbutu out of sleep.
Workaround: For the moment I set the frequency ON BOTH monitor at 60Hz, and I cancel the setting to get back at 144Hz, and it works.
If I put only one on my double screen at 60Hz, flickering continue ON BOTH.
I have a radeon 5700XT with 2 screens running at 144Hz and have this problem when I wake up my fresh install unbutu out of sleep.
Workaround: For the moment I set the frequency ON BOTH monitor at 60Hz, and I cancel the setting to get back at 144Hz, and it works.
If I put only one on my double screen at 60Hz, flickering continue ON BOTH.