Boot arg -igfxblr is not working on macOS ventura 13.4

[ameenjuz]

It is related to whatevergreen.kext i tried manytime to ventura 13.4 but no luck
I think that -igfxblr boot arg is break and i also tried prevoius versions of macOS ventura and montery working fine
enable-backlight-registers-fix is not register properly on latest ventura 13.4
Therefor i m facing black screen during boot process
Please fix this issue on whatevergreen.kext's project

[doantuyen15]

I have same problem.
Tried add and remove igfxblr in boot args then reboot, sometime its works but not completely fixed like ventura 13.3

[Edwardwich]

#2241

[OldDream]

same here seems we should wait till 13.5 release

[mandresve]

As commented on other bug thread #2241

Looks like Apple let this one slip to final release of 13.4, albeit doesn't seem to be the case on 13.5; patches are functional again as of 13.5 Beta 1 (22G5027e).

[Andrey1970AppleLife]

#2241