https://bugs.freedesktop.org/show_bug.cgi?id=64503
--- Comment #15 from Pierre Ossman pierre-bugzilla@ossman.eu --- (In reply to comment #14)
FWIW this is my 24Hz line as shown by xrandr --verbose, maybe yours is different?
1920x1080 (0x2cd) 74.2MHz +HSync +VSync h: width 1920 start 2558 end 2602 total 2750 skew 0 clock 27.0KHz v: height 1080 start 1084 end 1089 total 1125 clock 24.0Hz
1920x1080@23.976 (0x5e) 74.2MHz +HSync +VSync *current h: width 1920 start 2558 end 2602 total 2750 skew 0 clock 27.0KHz v: height 1080 start 1084 end 1089 total 1125 clock 24.0Hz
So identical I'd say.
Having never used pulse I don't know if it's easy to bypass (assuming you are using it),
Nope, direct alsa.