[GUIDE] Linux Strobe Utility and Vertical Total 1350

[Falkentyne]

The back porch should fill in automatically. Don't bother entering in those unless its required (and it may be in Linux so I don't know). In windows the back porch and blanking are filled in automatically (in either CRU or Nvidia CP)

You only need front porch, sync width and horizontal total and vertical total.
HT should be 2080.

Note : The default horizontal total (at least what the monitor defaults to on a fresh install of video drivers, and the default vertical total (which is 1125 VT) is 2200 and the default front porch is 88 pixels 4 lines, and the default sync width is 44 pixels 5 lines.
These values always work over *DVI* unless the pixel clock is too high and you get swimming pixels (E.g. at 120hz VT 1500, that will happen because the pixel clock is 396 MHz with those values) but with 2080 HT and 48,3 front porch and 32,5 sync width, you are at 374.40 dot clock which works at vertical total 1500.

The other "standard "timings (forgot what the term is) is 2080 horizontal total with 48 pixels 3 and sync width 32 pixels 5 lines.
I don't know the reason for this, but the Lightboost settings for "strobelight" and the manual bin file for ToastyX CRU for enabling the lightboost settings have the lower timings instead of the 2200 / 88, etc.

Again I don't know why.

What I DO know is that over displayport, some custom resolutions with the 2200 HT and the 88 and 44 porch and sync values, will make the monitor simply shut off, while using 2080 HT and 48 and 32 will work perfectly. An example is enabling 60hz "double strobe" Lightboost mode (stobing twice at 60hz lightboost, not benq blur reduction e.g. 120hz rates), using these values: 1920x1080, refresh rate 60hz, front 88,4 ;sync 44,5; horizontal 2200, Vertical 1155 (the default 120hz lightboost VT of 1149 will not enabling 60hz lightboost at all) will simply make the monitor shut off over displayport, while it works without issues over DVI. But changing HT to 2080 and front porch to 48,3 and sync width to 32,5 and 60hz 1155 VT will make 60hz double strobe lightboost activate.

The same thing happen if you try to force 50hz single strobe (single strobe enabled in the benq service menu) with benq blur reduction over displayport (ONLY possible with a custom resolution and VT; trying to enable single strobe at default 50hz (on any machine) will either damage the backlight or make the monitor hard power cycle from overvoltage to the backlight; strobe will NOT activate): using 2200 HT, 88/4 front, 44/5 sync, and Vertical total 1360 (this is required for single strobe 50 hz) will shut the monitor off right away, while using the 2080 timings will work correctly over displayport. Again this doesn't happen over DVI.