[Bug 87112] 24Hz (&23.976Hz) modes broken with recent drivers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87112

--- Comment #20 from Martin Andersen <martin.x.andersen at gmail.com> ---
Apparently the bug is actually still present, at least on Ivy Bridge. It still
fails to switch to the 23.976Hz mode, outputting everything in 24.00Hz. The
23.976Hz mode is added manually as a ModeLine for this gpu (Integrated Graphics
Chipset: Intel(R) Ivybridge Desktop (GT2)):

[  1901.437] (II) intel(0): Modeline "1920x1080 at 23.97610"x24.0   74.23  1920
2560 2604 2752  1080 1084 1089 1125 +hsync +vsync (27.0 kHz)

Kernel and X is the same, the only changes being replaced versions of –

- libdrm (2.4.64) 
- libdrm-intel1 (2.4.64)
- libva / libva-{glx1,drm1,egl1,x11-1} (1.6.0)
- libva-intel-driver (1.6.0)
- xserver-xorg-video-intel (2.99.917)

2.99.917 was indeed a step up from 2.99.911, which did not want to output in
either 23.976 or 24.00Hz. So it's a matter of "Close, but no cigar." ;)

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