Macpro 2013 late update 10.10.2 make problem with thunderbolt drive

motees wrote:

Also I discovered that the TB4 needs about 30 seconds to totally sleep after the MacPro is put to sleep; after that period of time I then shut off the TB4 power (using a programmable power timer).

It is unfortunate that for some people the sleep before powering off does not work for them. Try waiting a minute after sleeping before powering off.

In any case, I think the crashing and restarting is a new problem created by OS 10.10.2. I hope Apple fixes this sooner than later.

Hi,

I confirm : since last week, no more trouble proceeding like you say ! 🙂

After the sleep, I wait about 20 seconds for the light of my external drive vanish and then I power it off safely.

There's no doubt : the reason of the problem is OS X 10.2.2 and nothing else.

I have the same issue, however my Thunderbolt device is a OWC Mercury Elite Pro Dual and only started after installing 10.10.2.

I was able to boot from a 10.10.1 partition and the problem goes away.

Same problem here.

Mac Pro 2013, 6core, D700,

ejecting Lacie D2 3TB thunderbolt connected drive, and turning it off

causes OS X to go to Kernel Panic.

Never happened prior to OS X 10.10.2

Any word from Apple about the issue?

Yosemite discussion confirms a Thunderbolt storage problem with the 10.10.2 update and offers other notes about errors (and Console logs), MAME (an arcade machine emulator), Mac App Store update glitches, and video file upload problems with Safari.

Courtesy of http://www.macintouch.com

Update: Kernel panic and reboot upon turn off Thunderbay 4 drive bay problem has returned. Bummer. Apple needs to fix this. I am now sending in the crash report to Apple when this happens. My only practical solution for the moment is to let the TB4 remain on all the time. Not very ecologically friendly, Apple.

As temp fix eject the disks and then unplug the TB cable and then turn off the TB drive

"As temp fix eject the disks and then unplug the TB cable and then turn off the TB drive"

Yes, I thought about doing that, but too much work for me. I'd rather just keep my drives powered on until Apple fixes this mess.

The funny thing is, that my Pegasus 2 R4, with thunderbolt 2 works just fine.

I can turn it off without any glitches.

I don't know if this is of relevance, but it seems to be strange.

Unfortunately, that does not work with my LaCies. Once unplugged you can't shut them down.

Tried an Apple cable today and that didn't fix the problem, unfortunately.

So, one more indication that the trouble is caused by 10.10.2. Even LaCie are waiting for Apple to send out a new update.

And LaCie and other makes still have to have a good discussion about the sleep issue with Apple. They'll have to solve this together.

I spent almost an hour today with Apple online support regarding the kernel panic issue when ejecting then powering down an external TB drive. I ran my Mac Pro through the Systems Diagnosis and no hardware issue was found. I did send the kernel panic report to them (from the Console app found in Utilities) and they are sending what they call an "escalation" report to Apple engineering and I should hear something back in 3-4 business days. I would encourage others to also contact Apple Support and register the same. From what I picked up the early guess is that this may be a "driver error" issue...and I would expect most likely it can be corrected in a future Yosemite update. For now as a workaround, I eject the La Cie D2 Thunderbolt 2 drive and do not power it down while connected. I then shutdown the computer and only then turn off power to the drive. I will post an update after I hear back from Apple.

sfparker wrote:

Tried an Apple cable today and that didn't fix the problem, unfortunately.

Confirmed - I use Thunderbolt cables from Apple, and still get panics when ejecting my 4TB LaCie d2 Thunderbolt & USB3.0 drive.

Does this happens Stephan when you just eject the drive not power it off ?

innocentius wrote:

Does this happens Stephan when you just eject the drive not power it off ?

Sorry, my bad (I stand corrected :-) Unmounting / ejecting LaCie d2 disk partitions in the Finder is OK: the drive spins down and goes to sleep without problem. However when I take the power off from the hard drive (with the small switch at the rear of the unit), my iMac experiences a kernel panic.

Simplest and safest work-around for me was provided by krenders - just shut down the Mac, drive is properly ejected and spins down, Mac is powered off, then power off disk drive, restart Mac.

YMMV though, as various drives exhibit various behaviors when you power off the Mac: some spin down and go to sleep, others stay on.

(been discussing that in duplicate discussion: iMac crashes when powering off external Thunderbolt drive )