Mine still does it on latest DP/PB.
Every time? I don't switch between the two that often (mostly in Mojave these days) but with the last two betas, the couple of times I have rebooted to Mojave it hasn't double rebooted.
Mine still does it on latest DP/PB.
Every time? I don't switch between the two that often (mostly in Mojave these days) but with the last two betas, the couple of times I have rebooted to Mojave it hasn't double rebooted.
You find this official guide useful - I did. Before doing my CPU upgrade, I watched several videos. They each seemed to have their own unique "best practice" for applying thermal paste and tightening the screws. I've always been a believer that the people who engineered it have a pretty good idea of what they're doing.
Or... you could skip paste and go with reusable thermal interface material. from IC Solutions. Just trim and install. No worries as to where the past goes.
Or... you could skip paste and go with reusable thermal interface material. from IC Solutions. Just trim and install. No worries as to where the past goes.
I don’t know... for sure I’m done for today! I guess I’ll try again this weekend. I was so looking forward to doing this upgrade!
[doublepost=1536963618][/doublepost]Maybe I'll try this: reinstall the 5680s but this time with my original GPU (HD 5770) so maybe I'll be able to see what happens during boot...?
Ooooh, that's niiiiice. What's a good source for that, and how pricey is it?
very strange.. i was attempting to upgrade my 2009 4,1->5,1 today with some X5690s and also was unsuccessful. Just fans spinning, sometimes a blinking power light, but wouldn't boot. not even with only 1 cpu and 1 stick of ram, tried both sockets, both cpus everything. maybe something in the latest Mojave firmware is screwing with the cpu upgrades? i'm out of ideas for today too, been at it last 4 hours.
If still got a pre Mojave disk, that's def a good idea, and unplug everything else (leaving just kb/mouse, monitor of course). The fewer the variables the better. My bet is that one or both the CPU's are no good. I put in 2 x5680s w/ no issues.
Trying to find more info...
Firmware has nothing with your problem.Trying to find more info...
From what I've read, the startup chime is generated after the power-on self test, meaning if the processors were faulty I wouldn't even hear the chime. That would imply the 5680s re working fine. So... back to square one! It's not the RAM either since I don't have any errors with the original CPUs - this simple fact actually (the computer working perfectly with the factory CPUs) proves everything works just fine, from RAM to HD/SSD to GPU etc.
I did see this on Apple discussions (in reply to someone who was having having similar problems, stuck at the Apple logo - I bet mine is stuck at the logo as well I just don't see it with the RX 560): Installing High Sierra requires an additional firmware upgrade in the process, so you have made this much more complicated.
That's another reference to High Sierra's firmware...
Have you tried running each CPU separately yet?
Lou