<< Solved >> Dell Optiplex 7020 - 4K monitors on Intel 4600 Integrated GPU

[xjzhang1979]

0xDA2 original value = 2
And I set it back to 2 and tried the same thing and it worked, but only for a little while and then I set it back to 0.
Be interested to see if yours does the same.

from the image:
It seems that there are only two values for cfg lock: 0 and 1.

 

[nicksoph]

View attachment 426776

from the image:
It seems that there are only two values for cfg lock: 0 and 1.

Yes, that's been noted and mentioned but the original value is 2, despite only 0 and 1 being listed options. Not sure why but 2 seems to work as if it was 1.

 

[bluepr0]

I was about to do this 4k tweak and I got really scared haha. Both of the variables returned 1, which is weird because I'm on Dell 9020 SFF BIOS A25 (version recommended in the guide).

I might try to add the Clover configuration and see if it boots and works, without writing the UEFI

EDIT: It booted but there was glitches everywhere.
EDIT2: Dumping the BIOS and inspecting it is only for Windows

Do you think those numbers the variables return could be normal or are they really from other varilables?

 

[nicksoph]

Not certain but you should treat it as an important warning flag. Take a look at the instructions later in the thread for dumping the BIOS and check the details.

May I ask that you post your BIOS dump here so I can take a look at the differences. (But I'm on hols for 5 weeks and will only occasionally get back on here).

edit: if you are not able to dump the BIOS my advice would be to stop, if the settings are wrong they could be referring to other settings and if that's the case, any changes might require a new BIOS flash but that could be a complicated process which does not follow the normal method.

 

[bluepr0]

Not certain but you should treat it as an important warning flag. Take a look at the instructions later in the thread for dumping the BIOS and check the details.

May I ask that you post your BIOS dump here so I can take a look at the differences. (But I'm on hols for 5 weeks and will only occasionally get back on here).

edit: if you are not able to dump the BIOS my advice would be to stop, if the settings are wrong they could be referring to other settings and if that's the case, any changes might require a new BIOS flash but that could be a complicated process which does not follow the normal method.

I will have to find the time to install Windows in another disk, so will report back!

 

[nicksoph]

I will have to find the time to install Windows in another disk, so will report back!

Thanks - I think we might learn something here but not sure what.

It might also point to the fact the UEFI settings are not held in the upgradable BIOS but on the machines firmware, and therefore possible to have two machines with identical BIOS versions but with different default settings for a range of BIOS settings (some shown as editable entries in the BIOS but also other hidden ones which we or the factory might set using a special boot process).
I think our machines may have identical BIOS's but diferent UEFI settings.

The other setting is more likely to have other significant consequences - I think the config.plist needs fewer ticks once you have "Unlocked" whatever it is that the other setting unlocks

The BIOS dumping was a pain but educational

 

[nicksoph]

If you dont have a windows 10 machine - https://www.howtogeek.com/427223/how-to-download-a-windows-10-iso-without-the-media-creation-tool/

 

[nicksoph]

Problem Reporting Files for faultless (except maybe kb wake) -
7020MT, A25 Bios, 16GB, 2x 1920x1200
Sata - boot and Nvme - OSX, drives
64GB DVMT, Unlock Cfg
Wifi/Bluetooth card - the cheaper of the recommended ones - No tick in Allow BT to wake this computer

 

[trs96]

64GB DVMT, Unlock Cfg

64 Gigs DVMT ? Crazy high number ! Think you mean MB.

 

[nicksoph]

64 Gigs DVMT ? Crazy high number ! Think you mean MB.

Yes - For the next few years or so