I just got my IMP with the standard configuration. The only hardware upgrade was a 2TB hard drive. I also got the Final Cut Pro and Logic Pro X bundle. I transferred everything from my Late 2015 Imac to the new machine. One thing I have noticed is when you turn the computer on the Apple logo appears for about 10-15 seconds and then the status bar appears and the machine boots to a login screen. The puzzling part is the status bar delay. All my other Macs have both the logo and status bar appear at same time. I called Applecare and spoke with a senior advisor and honestly she was worthless and just said this is normal without doing any troubleshooting. I would have no problem with this but since no other Macs I have or had exhibited this behavior it raises the question of whether this is normal or not. I am wondering if any other users with the IMP could check and see if the same sequence of events occurs upon startup of machine.
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iMac Pro Imac Pro Startup Issue??
- Thread starter floridaman
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For Sierra according to Apple Pro Training Series: macOS Support Essentials (from Safari Books online) the system boot process can be divided into 4 sections.
1. The firmware is loaded. When completed you may get the chime, a flash from the power on light or the main display may power on.
2. Booter. Load the kernel and hardware driver kernel extensions. The booter uses cached files from (System/Library/Caches/com.apple.kext.caches) that are much faster to load. These files are cleared in Safe Mode.
The Apple logo is shown during this process.
When completed control is transferred to the kernel.
3. Kernel. Loads BSD Unix and additional kernel extensions. Progress is indicated by the status bar.
4. launchd. After the kernel is loaded the first non-kernel process launchd is started. It loads the rest of the system along with any user specified agents (daemons as well?).
10-15 seconds certainly doesn't seem normal for the booter. I get a ~2 second delay on my nMP. You might try a Safe Mode boot to clear the caches to see if that makes a difference. Otherwise hopefully iMacPro owners can chip in.
1. The firmware is loaded. When completed you may get the chime, a flash from the power on light or the main display may power on.
2. Booter. Load the kernel and hardware driver kernel extensions. The booter uses cached files from (System/Library/Caches/com.apple.kext.caches) that are much faster to load. These files are cleared in Safe Mode.
The Apple logo is shown during this process.
When completed control is transferred to the kernel.
3. Kernel. Loads BSD Unix and additional kernel extensions. Progress is indicated by the status bar.
4. launchd. After the kernel is loaded the first non-kernel process launchd is started. It loads the rest of the system along with any user specified agents (daemons as well?).
10-15 seconds certainly doesn't seem normal for the booter. I get a ~2 second delay on my nMP. You might try a Safe Mode boot to clear the caches to see if that makes a difference. Otherwise hopefully iMacPro owners can chip in.
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Safe mode didn't change anything so as you said hopefully some Imac pro owners can tell me if they have this issue.
I've seen that delay before on my macs, I'd not worry about it, but if you want peace of mind, run the Apple Hardware Test and/or view the console log to spot any potential errors.
You mean you see the logo, hear the chime, and then have to wait for extra 10-15s before the loading bar appear?
Actually there is no chime with the IMac Pro. When the logo appears It takes 10-15 seconds before the loading bar appears.
[doublepost=1514666593][/doublepost]Here is the boot time from the console logs
BOOT_TIME 1514656393 987792
That drives me crazy. I’m used to knowing if it has powered on by the chime. I want it back!
In other news, why is the first logon prompt so slow? Slow typing...mouse seems to stutter
Must be normal operation then and I am wondering if it is the T2 chip with extra security protection that is doing this.
May be just too many hardware to initialise now. It should cost quite a few seconds to self test all 128GB of RAM.
Or may be need few seconds to initialise the SSD RAID array.
can this be the problem???
https://www.theinquirer.net/inquire...design-flaw-exposes-windows-and-linux-kernels
[doublepost=1515009560][/doublepost]
https://www.theinquirer.net/inquire...design-flaw-exposes-windows-and-linux-kernels
[doublepost=1515009560][/doublepost]
Nah I think it's with the T2 chip. I see the same on my new iMac Pro. But once that 11 seconds is up, it seems fully booted.
Not likely. That initial startup period is all in ring 0, so the buffer between ring 3 and ring 0 is inconsequential to that startup period's duration.
This is likely a side effect of the T2 chip that likely needs to initialize before the rest of the system to present the NVME volume.
Starup with the Verbose mode set. This might shed some light on where the stall/delay is happening.
During Startup press and hold the Command (⌘) + V key combination for Verbose Mode.
So you have Encryption / FileVault enabled ?
When you say "typing & ..." where exactly in the login process are you referring to ?
Ok.... so you're saying entering your Password is terrible slow/sluggish with the characters echoing on the screen very slowly and also the pointer drags about badly at the Login display, right ?
After entering your password and selecting to proceed do you see a spinning cog wheel ? Does the cog wheel stop spinning ?
According to this web page. The iMac Pro has a 2 stage boot because of the T2 chip. May be OP is right, that's just the extra security causing the slow down.
https://www.macworld.com/article/32...e-imac-pro-the-start-of-a-mac-revolution.html
https://www.macworld.com/article/32...e-imac-pro-the-start-of-a-mac-revolution.html
I have a imac pro, 10 core setup and I just installed the Akai midi controller drivers, restarted my computer and then now it freezes at startup with the apple logo and the progress bar showing at prolly close to 100%. Stalls for more than 30min, nothing else happens. Ive restarted, shutdown, unplugged everything and went into safe mode for first aid but still....same thing.
Any idea of what else I can do?
Any idea of what else I can do?