Issues with Yosemite and Samsung 840 Pro SSD

Discussion in 'Mac mini' started by nollimac, Dec 10, 2014.

  1. nollimac macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #1
    Is anyone having kernel issues with Yosemite on your Mini with Samsung 840 Pro...particularly systemuiserver consuming 100% CPU?
     
  2. Idgit macrumors 6502

    Idgit

    Joined:
    Mar 14, 2004
    #2
    SystemUIServer using 100% CPU? Force quit it in Activity Monitor. After you do that, does it still misbehave? If so, you've got an incompatible or cranky menu bar item. Turn them off one by one until you find the culprit.
     
  3. nollimac, Dec 11, 2014
    Last edited: Dec 11, 2014

    nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #3
    Yes, I have force quit as well as deleted the com.apple.systemuiserver.plist file and didn't resolve...even creating a new user whom had the same issue. However, I believe you hinted on the right track...a incompatible or cranky menu bar...the right side. What could it be on a fresh clean install of Yosemite? No third party software installed.

    Issues I have seen for sure could be Time Machine, Volume control, or the clock. Both Time Machine and volume control refused to display in the menu bar even after selected. The clock changes every four minutes...usually when Spotlight does a check. How I realized it was when I had been monitoring Console and saw the time progressing yet the menu bar clock lagged.

    So since it was a clean install, I concluded there might be an issue with Yosemite and Samsung 840Pro SSD if others are having the same problems. I had the same SSD with Mavericks and Server on 2012 Mini...no problem!
     
  4. Idgit macrumors 6502

    Idgit

    Joined:
    Mar 14, 2004
    #4
    No problems with Mavericks, but this started with Yosemite? That doesn't surprise me at all. Yosemite is the buggiest OS release I've ever seen from Apple going back 20 years.

    Do you really need to have Yosemite installed? Because I suggest you downgrade. I installed Yosemite on both my MacBook Pro and Mac Mini but it was almost unusable on both of them because of the WindowServer CPU-hogging bug on systems with integrated GPUs and external monitors. I downgraded to Mavericks and both systems are rock-solid reliable again.

    Yosemite was released prematurely. In my opinion, it's still in early beta and not ready for release.
     
  5. Fishrrman macrumors G3

    Joined:
    Feb 20, 2009
    #5
    Although not related to the Mini, I've seen postings from others with MacBook Pro models who are having similar problems with the Samsung drive.

    That is, once installed, the computer's CPU goes crazy, and the MacBook overheats.

    Something in the drive itself -- firmware, software, hardware? -- is sending the CPU into overdrive...
     
  6. nollimac thread starter macrumors regular

    nollimac

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    Oct 10, 2013
    #6
    I found out Apple made Yosemite purposely to NOT be compatible with third party SSD which displeases me to the max.
     
  7. grandM macrumors 6502a

    grandM

    Joined:
    Oct 14, 2013
    #7
    What even bothers me more is that the official apple store in my country even states they do not want to upgrade my mini with a SSD even at their prices...
     
  8. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #8
    The only compatibility issue is trim, which IIRC was an issue with Mavericks also.
     
  9. nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #9
    No true...I had been running a whole year with Mavericks...no issue and now back to Mavericks after a brief Yosemite.

    ----------

    I wondered what's the rational behind that decision...very unApple I think.
     
  10. crashwarez macrumors newbie

    Joined:
    May 10, 2014
    Location:
    Brazil
    #10
    No problem with 840 PRO

    I have the same ssd (samsung 840 pro 256gb) on my mini and have no problem with Yosemite.

    The only thing that i have to do, is use TRIM enabler, to fix trim issue.
     
  11. nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #11
    So, you followed the suggestions here...no issues with the right side of the menu bar (time machine, volume control missing even after selected and the clock not keeping up with the time except when spotlight does it's check every four or five minutes).
     
  12. hwojtek macrumors 6502a

    hwojtek

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    Jan 26, 2008
    Location:
    A small rural village in western Poland
    #12
    So what is the truth? Because this "Apple made Yosemite incompatible with 3rd party SSDs" is so ********, it makes me wanna scream.
     
  13. crashwarez macrumors newbie

    Joined:
    May 10, 2014
    Location:
    Brazil
    #13
    Trim Enabler

    Yes, i followed this steps and update to 10.10.1. Everything is normal here (clock, time machine, volume control and spotlight). Trim Enabler is the best choice to fix this incompatibility of Yosemite.

    ----------

    Unfortunately yes, Apple does this so users buy SSD's with them.
     
  14. nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #14


    Cool...good to know. I think I'll wait for the official release of 10.10.2 to see whether Apple made changes. Since I am running Server, I want to keep things Apple happy before applying alternative.
     
  15. hwojtek macrumors 6502a

    hwojtek

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    #15
    Makes me wonder how four of my computers with aftermarket SSDs work happily on Yosemite.
     
  16. nollimac thread starter macrumors regular

    nollimac

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    Oct 10, 2013
    #16
    Murphy's law...they're exceptions to every rule...so who makes your SSD?
     
  17. thepixelpusher macrumors regular

    thepixelpusher

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    Dimension C-137
    #17
    I was considering an SSD from OtherWorld Computing (figure they are the most compatible) for my Mac Mini and NOT fusing the SSD and hard drive. Would I still need "trim enabler"? And am i still open to Yosemite issues even though not doing the hack fusion?
     
  18. hallux macrumors 68020

    hallux

    Joined:
    Apr 25, 2012
    #18
    Not the person you quoted but I have an 840 EVO in my 2012 MBP and an OCZ Vertex 3 in my Mini. Also no trouble with either with TRIM enabled.
     
  19. paulrbeers macrumors 68040

    Joined:
    Dec 17, 2009
    #19
    There is no incompatibility issues. The issue is simply turning Trim on and off. You can still turn on Trim, but it leaves your computer more vulnerable. If Trim isn't important to you, then you shouldn't care at all. I haven't turned on Trim, but I'm using Samsung 840 EVO's, Crucial M500's, and an old Sandforce 2281 SSD (don't remember which make/model) with no issues in Yosemite. Just no trim.
     
  20. BeatCrazy macrumors 6502a

    Joined:
    Jul 20, 2011
    #20
    I was a Trim Enabler user for several years with my 256GB 840 Pro. Once I upgraded to Yosemite, I started experiencing issues with TE turned on. The mini would not shut down properly, when it booted it would sometimes be a black screen with just the cursor showing, etc.

    In my experience, TE with Yosemite is just too buggy (and maybe risky) to be bothered with. Yet, I still value the importance of TRIM. Use at your own risk!!
     
  21. eutexian macrumors regular

    Joined:
    Jan 6, 2012
    Location:
    Mapperley, Nottingham UK
    #21
    256 pro. Yosemite and Trim.

    No problems whatsoever. Everything remains super. Boots in 15 seconds... So a 3 second increase over mavericks. Maybe I should send apple a stern email?
     
  22. nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #22
    That's why I downgraded to Mavericks...no issues with the trim enabled. If Apple had wanted Yosemite to work with third party SSD, one would not see the security alert fear.
     
  23. nollimac thread starter macrumors regular

    nollimac

    Joined:
    Oct 10, 2013
    #23
    I have the same Mini...just with 16GB RAM and Samsung 840 Pro/120GB that I use as a server. Server 4.0 worked...no issues...It was just with Yosemite, and it was just the right side of the menu bar...which wasn't the supposed trim issue...at least what I think.

    I will retry when Apple officially releases Yosemite 10.10.2.
     
  24. hwojtek macrumors 6502a

    hwojtek

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    Jan 26, 2008
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    A small rural village in western Poland
    #24
    One Crucial 128 GB something, two Samsungs 840 Evo, one older Samsung 810. Crucial is a running experiment, as it is a part of homemade Fusion drive on a Mac Pro 2,1 with boot.efi replaced.
    The ONLY slight issue with the Crucial is that when the Trim Enabler is turned on, the computer always boots for 3 seconds, restarts even before reaching the login screen and boots again, this time clean. As the Pro is not getting rebooted or turned off too often, this is a minor issue and I am not sure if it would happen in any other scenario.
     
  25. crashwarez macrumors newbie

    Joined:
    May 10, 2014
    Location:
    Brazil
    #25
    They work, but with TRIM disabled. To enable, u must use some software (like TE)

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    Yes, the only way to NOT need TE is buying your Mac with SSD from factory.
     

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