Custom Resolution Utility (CRU)

[vigan1]

(08-27-2020 02:44 PM)ToastyX Wrote:  The polarity doesn't matter. To get exactly 50 Hz, use the timing parameters you posted earlier and change the vertical total to 2065, or use "LCD standard" and then switch to "Manual" and change the vertical total to 2050. Keep in mind that just sets the logical refresh rate to exactly 50 Hz. The actual physical refresh rate might be slightly off depending on the hardware clock precision. It might be more accurate with an integer pixel clock. Setting the totals to 3200x2050 will give you exactly 50 Hz at exactly 328 MHz pixel clock.

OK thank you I will try it and see ! I will post CRU screenshot I hope it will be ok.

(08-28-2020 02:46 PM)MaKneeTore Wrote:  Should that fail, can you describe how you disabled the GPU legacy mode? Was this a setting provided in your BIOS/UEFI? This laptop has a very sparse BIOS configuration (lots of graphics, very little of actual use).

Thank you for your help!

First tell me what is the brand and model of you laptop. To see if you have the correct drivers, and try updating your bios.
If everything fail, you should find an option in the bios called :
Compatibility Support Module (CSM)
For me it was under ADVANCED > Compatibility Support Module (CSM).
Activate this option (it should be on by default I think) and you should see :

USB (Legacy or UEFI)
Video (Legacy / UEFI)
storage (Legacy / UEFI)

I simply selected "Legacy" under Video, and restarted.
All bios are different and some bios are completely locked, so it may not be here.