Custom Resolution Utility (CRU)

[TnF]

(01-15-2019 06:46 PM)ToastyX Wrote:  

(01-15-2019 10:37 AM)TnF Wrote:  Hello ToastyX and thanks for creating this utility. I have a new workstation laptop here that i borrow from work to use at home until i have funds to build a PC, it is a HP Zbook 17 with coffee lake 8850H and quadro p3200. I successfully overclocked the monitor LGD059E to 100hz@1080p without dropping frames (ufo frame skipping test). All with latest intel and nvidia drivers.

My question is that if i add a resolution over 100hz it will not appear inside the intel graphics control panel. (now that i think about it i haven't checked if it appears inside windows display properties; maybe it is a limit in the intel control panel edit: checked anything above 100hz doesn't appear). Any idea why this happens..also noticed it says that the bit-depth is 6-bit instead of 8-bit..weird.

Probably bandwidth limitations. DisplayPort has the ability to drop down to 6-bit color when bandwidth is limited, so it's likely the laptop has an embedded DisplayPort (eDP) connection to the panel.

Yes indeed, 240Mhz limit. As of yesterday i didn't know what pixel clock meant, either way i managed to get to 1080p 103hz with original clocks and 105hz with custom timings confirmed no frame skipping. I couldn't find a timing combination that was stable at 106mhz. Is there is a methodology with the timings? I did several tests where i found min values for all 6 timings (back porch, front porch, sync, both H and V), but i couldn't use a combination of mins without problems. Is there is a methodology to this? I spend the whole day before calling it day to push to more than 105hz. The obvious thing however is that pesky 240mhz pixel clock limit which if removed it might be possible to push further these displays (assuming eDP is not maxed out at 240Mhz, is should be underspec since i'm already there).

Too bad you haven't developed an intel pixel clock patcher I think more people would want one especially after all the info and guides i found over your tool in laptop forums mainly here ( http://forum.notebookreview.com/threads/...us.802167/ ).
Virtually all laptops at the moment (since i-2nd gen are running an intel cpu with integrated graphics and i am not happy to say it as an amd guy), similar to all people with a 7700k and the like (although desktop users usually run discrete graphics on desktop that outputs directly to the monitor). I still don't have my own desktop and use this workstation laptop i borrow from work but i can do some testing if needed.

The only other thing that remains is that for some reason any resolution over 60hz reports 6-bit colour depth instead of 8-bit but that was a bug in the intel driver so it must be still present (i will write them about this).