[Bug 91434] 23.976Hz & 24Hz modes broken on dual-display with recent (4.0.x) kernels
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sun Aug 23 08:06:20 PDT 2015
https://bugs.freedesktop.org/show_bug.cgi?id=91434
Martin Andersen <martin.x.andersen at gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |ASSIGNED
--- Comment #10 from Martin Andersen <martin.x.andersen at gmail.com> ---
Added two attachments, the first from a correctly-working 3.13.5 and the second
with a 4.0.9 kernel exhibiting the bug.
Steps performed after boot:
3.15.5:
$ xrandr -q
$ xrandr --output HDMI2 --rate 24 (HDMI2 switches refreshrate correctly)
$ xrandr --output HDMI2 --rate 23.976 (HDMI2 switches refreshrate correctly)
4.0.9:
$ xrandr -q
$ xrandr --output HDMI2 --rate 24 (blank screen on HDMI2)
$ xrandr --output HDMI2 --rate 23.976 (blank screen on HDMI2)
$ xrandr --output HDMI2 --rate 60 (display being output on HDMI2)
<logout from main DE to non-compositing WM>
$ xrandr --output HDMI2 --rate 24 (blank screen on HDMI2)
$ xrandr --output HDMI2 --rate 23.976 (blank screen on HDMI2)
$ xrandr --output HDMI2 --rate 60 (display being output on HDMI2)
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