Custom Resolution Utility (CRU)

[Nintendo Maniac 64]

I've got a (admittedly relatively small) 1280x1024 monitor that I like to use in summer due to it's low power consumption (~10w) and therefore low heat output that always throws up a "out of range" warning message and then subsequently puts the monitor into standby if the refresh rate is set to anything other than 60Hz or 75Hz.

But AFAICT, any refresh rate from 47Hz up to 75Hz actually works fine as something like 50Hz and 72Hz actually does show a perfectly fine looking image despite the stupid "out of range" message and subsequent standby.

Interestingly I found that, on Linux, I can take the xrandr cvt modeline for 60Hz and manually change two of the values to create a 50Hz output that doesn't result in the monitor throwing up the infamous "out of range" message and does in fact keep the monitor awake, and the same similarly worked for manually turning the xrandr cvt modeline for 75Hz to create a working 72Hz and 71.92Hz output (I've also confirmed that it's not skipping frames or the like with my custom 50Hz output).

...yet in CRU, manually tuning a detailed resolution of 50Hz to use the same timings as 60Hz or 75Hz still results in the aforementioned "out of range" message.


So yeah, how would one go about getting this to work in CRU? For reference, these are the following custom xrandr modelines that I've created:

Code:

xrandr --newmode "1280x1024_49.99"  88.50  1280 1368 1496 1665  1024 1027 1034 1063 -hsync +vsync

Code:

xrandr --newmode "1280x1024_71.92"  138.75  1280 1368 1504 1800  1024 1027 1034 1072 -hsync +vsync

Code:

xrandr --newmode "1280x1024_71.99"  138.75  1280 1368 1504 1798  1024 1027 1034 1072 -hsync +vsync