Opencore sample.plist>HD3000 IGPU memory coruption errata?

[Julian_mstfh]

Hi all..

A lot of people having issue intel hd3000 in high sierra and also mojave&catalina (using patcher which is based from high sierra)

it often freezing and glitchy.

until i found this on opencore sample plist

 

i think this patch exactly related to that freezing issue

but i didnt found any guide to use this patch?

 

maybe someone can explain to use this patch?

thanks

[Julian_mstfh]

11 hours ago, Hervé said:

Well, if you have an HD3000 Hack, just apply/enable this in the UEFI->Reserved Memory section of your OC config and tell us how it goes. This would basically reserve 256MB of memory @ address 268435456.

https://dortania.github.io/docs/latest/Configuration.html#x1-7600014

 

I must say I'm quite doubtful on this given the time at which this comes out and it's extracted from a sample file... Had a fix to the HD3000 bugs/glitches been found, tested and proven, we could have expected to have heard about it by now, wouldn't you say? So, don't get too excited and don't jump to conclusion too hastily.

 

Also keep in mind that, in OS X/macOS, HD3000 driver allocates VRAM according to system's RAM quantity:

2GB RAM -> 256MB VRAM

4GB RAM -> 384MB VRAM

8GB RAM -> 512MB VRAM

so if if my setup 8gb=512mb

Which addres should i use? if 268435456=256mb

 

i dont really know how to convert 512mb To the addresses

[oldman20]

On 5/13/2021 at 12:57 PM, Julian_mstfh said:

so if if my setup 8gb=512mb

Which addres should i use? if 268435456=256mb

 

i dont really know how to convert 512mb To the addresses

In Docs Dortania, but actually don't understand much

Size
Type: plist integer
Failsafe: 0
Description: Size of the reserved memory region, must be page-aligned (4 KBs).