https://bugs.freedesktop.org/show_bug.cgi?id=111482 --- Comment #16 from Andrew Sheldon --- One possibility could be to create a custom modeline, perhaps trying refresh rates between 30-60hz (starting with 45hz), so you can find a point where the high idle power usage kicks in. Reduced blanking modes could be useful if it's a case of bandwidth. See: https://github.com/kevinlekiller/cvt_modeline_calculator_12 Something like this, using just xrandr (-b option indicating reduced blanking v2 mode): ./cvt12 5120 1440 45 -b Which yields: Modeline "5120x1440_45.00_rb2" 344.21 5120 5128 5160 5200 1440 1457 1465 1471 +hsync -vsync Then: xrandr --output DisplayPort-2 --newmode "5120x1440_45.00_rb2" 344.21 5120 5128 5160 5200 1440 1457 1465 1471 +hsync -vsync xrandr --output DisplayPort-2 --addmode DisplayPort-2 "5120x1440_45.00_rb2" xrandr --output DisplayPort-2 --mode "5120x1440_45.00_rb2" -- You are receiving this mail because: You are the assignee for the bug.