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davidm71

Safe to replace CSMVIDEO with Clover's in Bios?

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Hi,

 

Was wondering if it would be safe to replace the CSMVideo file in my bios module with the one from Clover?

 

Thanks

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7 hours ago, davidm71 said:

Hi,

 

Was wondering if it would be safe to replace the CSMVideo file in my bios module with the one from Clover?

 

Thanks

 

If it works you should be able to replace the module. I don't think it would have that much of an advantage over loading it after than maybe bricking your motherboard

Edited by apianti

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CsmVideo in Clover is a GraphicsOutputProtocol based on legacy BIOS INT calls so CSM must be switch on.

UEFI BIOS GOP is probably pure UEFI GOP driver independent on CSM. It will be not good idea to replace it by CSM version.

Yes, OEM created GOP with restricted possibilities and my CsmVideo works really better. But not for replacing.

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It would seem like a big risk though on my Ozmosis rig I once did in fact replace the csmvideo bios module successfully on a Gigabyte Z87 board and that helped fix a resolution issue I was having. Though that file was called hermitcsm I think. Probably an older modified Edk release?  

 

The system I am thinking of modding is an Asus Z68 board running Clover. The GOP driver I don’t believe gets loaded  because I’m using a discrete video card and I just updated that card to the latest nvidia gop plus the motherboard lacks on board video ports. Furthermore turning off csm on this board locks up the system because of faulty uefi bios thanks to Asus.

 

Thing is I have noticed that after I select to load Windows from the Clover boot menu all of a sudden the screen goes into high resolution mode with my bios boot logo being displayed half size while the Windows spinning wheel is displayed below the logo that was meant to be displayed at 640x480 res but now at a higher resolution. So was wondering if replacing that csmvideo module would allow the system to post at a higher res to keep things consistent?

 

Fwiw I have my usb rom programmer standing by..

 

 

Thanks.

Edited by davidm71

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