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my aunt had a similar issue with 10.10.3 - reinstalling the combo update fixed it

What is the combo update? I did the update through the App Store on my rMBP, I don't know anything about a combo update. Thanks
 
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Define awful. I am on 10.10.4 on my Late 2010 MBA for the past 10 minutes or so. No obvious degradation in performance. Still pretty zippy.

Every morning after sleeping over night the machine would lock up and require a forced reboot to be functional again. It also broke the scaled resolution selection as it stopped recognising it as a laptop and thought it was an external monitor.
 
My iMac 2011 21.5" seems to have performed a firmware upgrade during the 10.10.4 update.

It made the very low-pitched beep noise instead of the normal chime, did something for a while, then rebooted. Anyone else see this?

And now System Information now shows "Boot ROM Version: IM121.0047.B21" - newwer than the IM121.0047.B1F which is the latest version shown on Apple's firmware updates page. Anyone know anything about this?
my MacBook Pro 8,2 also performed a firmware update now show version MBP81.0047.B2A formerly MBP81.0047.B27 also has a new smc version now showing 1.69f4 formerly 1.69f3 i wonder what these updates contain
 
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my MacBook Pro 8,2 also performed a firmware update now show version MBP81.0047.B2A formerly MBP81.0047.B27 also has a new smc version now showing 1.69f4 formerly 1.69f3 i wonder what these updates contain
They are full of zip files which will self-unzip in the middle of the night to release Overpriced & sub-standard Beats Headphones, They will then creep over your ears & convince you that a combination of the most expensive Beats Headphones & a Subscription to Apple Music for you, your Family, & everyone you ever saw on Facebook, is the ideal plan for you.
 
What is the combo update? I did the update through the App Store on my rMBP, I don't know anything about a combo update. Thanks
A combo updater is an updater that updates 10.10.0 to 10.10.4 (in contrast to the 'normal', differential updater that updates only from 10.10.3 to 10.10.4). Essentially you are re-installing the parts of the OS that got changed with earlier updates as well as adding the changes from the latest differential update.
 
To those of us with Samsung 8xx SSD's, I just found some disturbing comments about enabling TRIM (see the comments on the linked ARS article). It may not be "healthy" for those drives afterall?
http://arstechnica.com/apple/2015/0...lows-you-to-enable-trim-for-third-party-ssds/

Thanks for that! I enabled TRIM for my Samsung 840 EVO as soon as I installed the 10.10.4 update, but I disabled it for now, at least until Samsung addresses this issue. If they don't, I'll probably just buy a Crucial MX200, seeing as those don't seem to have the TRIM issue.
 
Both 10.10.4 and iOS 8.4 have broken IMAP over SSL.

My server is using Cyrus IMAP, and I have a real and proper SSL certificate. Everything was fine until this update, now *poof* and no useful diagnostic information of any kind.

Thanks, Apple.
 
My iMac 2011 21.5" seems to have performed a firmware upgrade during the 10.10.4 update.

It made the very low-pitched beep noise instead of the normal chime, did something for a while, then rebooted. Anyone else see this?

And now System Information now shows "Boot ROM Version: IM121.0047.B21" - newwer than the IM121.0047.B1F which is the latest version shown on Apple's firmware updates page. Anyone know anything about this?

I have a MBP Early-2011 and mine did the same thing (low-pitched beep and flashing the sleep indicator) when I installed the EFI update from the App Store app. EFI version ended in B27 before and now ends in B2A.
 
Try a SMC and/or PRAM/NVRAM reset.

I will try that now, thank you sir.

If you tested 10.10.3 "clean" (meaning you didn't install anything until you tested that the battery would last as it is supposed to) and your battery was still being drained fast, I'd say that is a defective battery not an update problem.

If you did a clean install, then installed everything you had on it before, you put yourself right back in the same boat you were in before the clean install and it isn't an update problem either.

I'm not sure if the batteries are already defective (1 year). I scheduled an appointment with the APPLE tech store guys anyway. Thanks!
 
Right article, wrong vulnerability. Thunderstrike was an older issue that was partly fixed by 10.10.2 (CVE-2014-4498), but there was another related issue around boot.efi which may not have been fixed yet (see the earlier Ars Technica article and linked blog post).

The EFI update in 10.10.4 fixes two documented issues: "Dark Jedi Sleep" which allows root privileged code to write to the firmware for a short window after the computer wakes from sleep (CVE-2015-3692), and "Rowhammer" which may allow malicious software to indirectly modify memory used by other software (CVE-2015-3693). Apple mentions them in the security release notes for 10.10.4 (look for "EFI").

I had a look inside the installer package: there are firmware updates for all Mac models introduced in 2011 or later (except the mid 2012 Mac Pro), i.e. all Macs with Thunderbolt ports. Apple has also released a Mac EFI Security Update 2015-001 for Mavericks and Mountain Lion which installs the same EFI updates. 2011 and later Macs still running Snow Leopard or Lion will need to run a later system to get this EFI update.

2010 and earlier Macs aren't vulnerable to EFI issues which involve Thunderbolt (because they don't have it), but they may be vulnerable to the wake from sleep and Rowhammer issues.
 
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It actually fixed my external monitor issue that I had for the last 4 months. Pretty happy.

Everytime I turn my computer on it was putting it in low resolution and sometimes I had to turn monitor off and then on about 10x.
 
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After some more tinkering with the Terminal, I finally got the system to boot up, and TRIM is enabled. I guess something must have went wrong after I disabled Chameleon TRIM Enabler, and then ran the trimforce command.

Is there a way to check if kext signing is enabled on my system? When I type "nvram boot-args" it says data was not found

So if using Chameleon Trim Enabler should it not be disabled before going into terminal and doing the update there?
 
Attempted Software Update at 5AM EDST and got nothing but an interminable spinning icon. Went to Apple's site and downloaded 10.10.4 Combo Update, launched it, sat for 20 minutes while it looked like it was going to reboot, nothing. Restarted and tried twice more, nothing. Downloaded the 10.10.4 Update, not COMBO, and it installed fine. Something's up somewhere at the Mothership with regards to this update.
 
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my apple store doesn't work :p

My Mac App Store app seems to be frozen also.

Upgrade failed somehow. Now I'm stuck on installing again and again.

View attachment 565170

Same here

i did 2 restarts and still the same problem. i press update-restart-show details and we are back again

everything like this for my two macbooks, too.

Tried several restarts, forcequitting, waiting etc...
 
So stable, an elephant can balance on it!

You can consider system "stable" when it reaches 1 year uptime under heavy local and network load.
All your system did so far is displaying desktop for a few hours :)
 
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