[Nouveau] [Bug 93405] nouveau: Xorg crashes sooner or later in 3840x2160 mode

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93405

--- Comment #16 from Elmar Stellnberger <estellnb at elstel.org> ---
Great! With nouveau.hdmimhz=225 I can yield such modes like 3840x2160 at 23/24Hz
whereby 23Hz is stable and 24Hz sometimes starts to flurr. For those who prefer
a higher freuquency 2560x1600 at 47 should be a tip. 25MHz for 2840x2160 will make
my display stay black and 48Hz for 2560x1600 results in considerable pixel
flurring. I have also tried it with 3840x2160 at 48i interlaced. However with all
3840x2160 interlaced modes the mouse pointer disappears. I can still move the
mouse highlighting the icons where the mouse moves over but the mouse pointer
will be no more visible as soon as I select an interlaced mode. I don`t know
whether a fix would be possible for the interlacing mouse pointer issue but
that would even give a better 4K experience on elder cards as modes with
24/25/30Hz yield a somewhat deferred moving of animated objects like the mouse
pointer. Nonetheless the joy of running a full 4K display with my Nvidia G96M
[GeForce 9600M GT] is a thriving experience. To make this report complete
nouveau.hdmimhz=297 will let my HDMI output simply stay black. The support of
the hdmimhz parameter is an amazing feature that no proprietary driver will
give; neat work!

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