ssprod Posted November 2, 2015 Share Posted November 2, 2015 Greetings.. completed my El Capitan installation on 1 x E6420 HD3000 Lo-Res.. all is running beautifully, however my 2nd E6420 happens to be Hi-Res (1600x900 + i5 2520 CPU) and my Clover USB does not boot to the installer screen. I have tried using the hi-res DSDT from https://osxlatitude.com/index.php?/topic/7091-dell-latitude-e6420-with-i5-2410m-hd3000-and-1600x900-lcd-mavericks/, but that renders unsuccesful results also. Any suggestions would be much appreciated. Thanks! ssprod Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted November 3, 2015 Moderators Share Posted November 3, 2015 Enable dual link under Graphics in Clover Config file. Set it to 1. Link to comment Share on other sites More sharing options...
ssprod Posted November 3, 2015 Author Share Posted November 3, 2015 Hi Jake..once again thank you! Well, this gets me farther into the bootloader but renders a black screen just before graphics. With the exception of the edit you've suggested I'm using the identical EFI folder and contents as the lo-res unit. E6420 Hi Res EFI.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted November 3, 2015 Moderators Share Posted November 3, 2015 Your DSDT needs to have dual link Enabled as well. DSDT.aml.zip Link to comment Share on other sites More sharing options...
ssprod Posted November 3, 2015 Author Share Posted November 3, 2015 Thanks for your efforts here Jake, unfortunately the result is the same, black screen just before graphics. I replaced the DSDT in post#3 with your attachment in post#4. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted November 3, 2015 Moderators Share Posted November 3, 2015 Can you confirm this model doesn't have the Nvidia discrete card? Link to comment Share on other sites More sharing options...
ssprod Posted November 3, 2015 Author Share Posted November 3, 2015 Jake, no mention of Nvidia whatsoever in the bios. Strange thing is, was running Yosemite with the hi-res DSDT from (http://forum.osxlati...-lcd-mavericks/).Thanks. ssprod E6420.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted November 3, 2015 Moderators Share Posted November 3, 2015 Try this Archive.zip Link to comment Share on other sites More sharing options...
ssprod Posted November 3, 2015 Author Share Posted November 3, 2015 Jake, tried this. Weird issue.. goes to black screen, goes into sleep mode immediately, when I wake it up I can see the MacOSX setup utility, but when I hover the cursor over to Utilities, the screen turns black/illuminated. Tried enabling dual link in your config. but same result. Sorry for the trouble, mate! Scratching my head on this one! ----> Update: I seem to be able to boot to the installer presently by checking Inject EDID+ Load Video Bios in Clover Options of USB. Shall see how the install proceeds. Thanks. Link to comment Share on other sites More sharing options...
ssprod Posted November 10, 2015 Author Share Posted November 10, 2015 Presently, the system is booting to El Cap without issue, however I'm experiencing compromised performance and "glitches" in behaviour. Currently, I'm using the DSDT and config from post 8, however I've used most of the patched DSDT's available on this site with the same results. When I download any file, the system freezes up forcing a reboot. When I open my DSDT with MacIasl, the system freezes, however when I extract a raw DSDT from the 6420, it seems fine. Any help on the issue would be most helpful. Just to summarize, my cpu is a 2520M, GPU is Intel HD3000 1600x900 Hi Res. Thanks! Link to comment Share on other sites More sharing options...
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