no-signal/black screen on installation screen "r9 270x"

[carpentryplus25]

i honestly not sure what is the difference between using 6.1 or 14.2 "the current for El Cap" other than 6.1 was the one i was using on El Cap USB, i've included my current config incase u may need it.

sorry this it the only machine i have, for the IOReg not sure what u need but i have AIDA64 to extract the aml files or i can get the ones clover extract with "F4".

for the safe mode, for some unknown reason, everytime i try to boot into it the machine auto-reboot.

i have applied the FB patch from ur attached config and will try to rebuild the cache , then will report back.

again thanx for all ur help, deeply appreciate it

Using that config.plist will likely cause panics since this is a set up that should be using a Mac Pro definition use the config that I uploaded

 

[carpentryplus25]

I forgot to add fix display and changing GFX0 to GFX1 won't save for some reason so I reenabled Pike's fix in that config.plist use this one instead see if it works

 

[littleone]

hate to tell u, but same old "focken apple"

 

[carpentryplus25]

hate to tell u, but same old "focken apple"

have you been able to rebuild caches yet?

 

[littleone]

single user give panic , how would i rebuild the cache ?

 

[carpentryplus25]

single user give panic , how would i rebuild the cache ?

After plenty of reading i have figured that most of your issue here is the CPU in fact now you can try rebuilding caches from a USB installer via terminal keep in mind you'll have the use the cd command to move over to the drive you need to rebuild the caches on

 

[carpentryplus25]

Yeah the vga monitor is definitely not helping things. I tried a vga install a while back and I couldn’t get it to do anything. Sad thing is I knew better and wasted all my time on it.