Akerbeltz14 Posted June 28, 2022 Author Share Posted June 28, 2022 Thanks Jake Lo! Layout-id 21 worked perfectly! (16,14 static sound, 56,13 N/A) Any guesses why im getting 30hz on 4k monitors over hdmi?? Thank you so much guys!! Link to comment Share on other sites More sharing options...
Administrators Hervé Posted June 28, 2022 Administrators Share Posted June 28, 2022 The last OC EFI folder you posted shows that you disabled patches for framebuffer's fbmem and stolenmem; I therefore assume you must have patched DVMT in BIOS through Grubshell. Is that correct and if so, which value did you set DVMT to? 64MB or 96MB? I would also try to disable these other patches: disable-agdc enable-hdmi-dividers-fix I'm not using such patches on my SKL HD520 Latitude E7270 and obtain 4K @60Hz out of DP + HDMI with DVMT 96MB BIOS patch alone (I only use igfxonln=1 boot-arg to avoid built-in LCD staying off when connecting HDMI). Link to comment Share on other sites More sharing options...
Akerbeltz14 Posted June 28, 2022 Author Share Posted June 28, 2022 Hi Hervé, I didn't patch DVMT in BIOS, How can I do that and the other patches? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted June 28, 2022 Administrators Share Posted June 28, 2022 See at bottom of post #1: https://osxlatitude.com/forums/topic/15648-dell-latitude-e7270-with-i7-6600u-hd520-and-1920x1080-touchscreen-high-sierramojavecatalinabig-surmonterey If you have, say, a Clover bootable USB key, simply copy the ModGRUBShell.efi module to EFI/CLOVER/drivers/UEFI folder. I would expect you to find DVMT set to 64MB and require to set it to 96MB for 4K @60Hz. Link to comment Share on other sites More sharing options...
Akerbeltz14 Posted June 29, 2022 Author Share Posted June 29, 2022 Ive set DVMT to 96MB now, and I still get 30hz from cdmi, but I get 60hz from usb-c with an adapter to hdmi. Its that right? thanks Link to comment Share on other sites More sharing options...
Administrators Hervé Posted June 30, 2022 Administrators Share Posted June 30, 2022 Here are Intel's specs: https://ark.intel.com/content/www/us/en/ark/products/97472/intel-core-i57300u-processor-3m-cache-up-to-3-50-ghz.html Do you use Display Menu app to select your HDMI resolution? Link to comment Share on other sites More sharing options...
Akerbeltz14 Posted July 2, 2022 Author Share Posted July 2, 2022 Yes, I usually use the display menu, but there UHD tops out at 30hz. take a look at this photo: seems like hdmi its limited to 30hz max. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted July 2, 2022 Moderators Share Posted July 2, 2022 Depends on your hardware Link to comment Share on other sites More sharing options...
Administrators Hervé Posted July 3, 2022 Administrators Share Posted July 3, 2022 After double checking my Skylake/HD520 Latitude E7270, with DVMT patched to 64MB or 96MB through GrubShell, I'm getting 4K @30Hz max. HDMI and 4K @60Hz DP: It's in full compliance with Intel's posted specifications. Link to comment Share on other sites More sharing options...
Akerbeltz14 Posted July 3, 2022 Author Share Posted July 3, 2022 Okey, Thanks for everything @Hervé and @Jake Lo! build complete! Link to comment Share on other sites More sharing options...
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