Moderators Jake Lo Posted August 24, 2021 Moderators Share Posted August 24, 2021 Ignore what it shows in Windows as it's not indicative of what's in the BIOS. Set DVMT to 0x4, then you can disable these 2 patches: framebuffer-fbmem and framebuffer-stolenmem Link to comment Share on other sites More sharing options...
lamatta17 Posted August 24, 2021 Author Share Posted August 24, 2021 OK, i'll do so. But how? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 24, 2021 Moderators Share Posted August 24, 2021 I have a DMVT guide, use the search facility to find it. Should be under FAQ Link to comment Share on other sites More sharing options...
lamatta17 Posted August 25, 2021 Author Share Posted August 25, 2021 Hello Jake Lo, I have created the text file PE32 IFR.TXT according to your instructions. (I assume that this only serves to check whether the parameters for patching are correct. So if the value for DVMT is 0x432 is already 0x4). Then I created the boot stick with grub and executed the command setup_var 0x432 0x4. In the config.plist I then have the two patches: framebuffer-fbmem framebuffer-stolenmem removed. The directory /Library/Displays removed to. nvram-reset and started it. Unfortunately without success Is there still a change to get the int. monitor running? Desktop.zip Link to comment Share on other sites More sharing options...
Administrators Hervé Posted August 25, 2021 Administrators Share Posted August 25, 2021 Do you use WEG boot arg igfxonln=1 ? Needed it on my Skylake E7270 or built-in LCD went off on plugging an HDMI display and/or after wake. Link to comment Share on other sites More sharing options...
lamatta17 Posted August 25, 2021 Author Share Posted August 25, 2021 with or without, same result. Black screen. Link to comment Share on other sites More sharing options...
lamatta17 Posted August 25, 2021 Author Share Posted August 25, 2021 maybe it helps Precision 5510 4k.ioreg Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted August 25, 2021 Administrators Share Posted August 25, 2021 have you tried agdpmod=pikera instead of agdpmod=vit9696 Link to comment Share on other sites More sharing options...
lamatta17 Posted August 25, 2021 Author Share Posted August 25, 2021 Hello Broxteck, when I start with the ext. monitor {Fn}+{F8}, then I get the apple (I never had until now). Just before switching on the apple I still see the message: Probing ... Starting ... When I start with the int. monitor, with the ext. still connected, the PC freezes. The ext. monitor stays dark and on the int. monitor is the message: IGPU setting ... Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 25, 2021 Moderators Share Posted August 25, 2021 Try this config config.plist.zip Link to comment Share on other sites More sharing options...
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