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Trium Shockwave

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Posts posted by Trium Shockwave


  1. Your graphics system needs to support Core Image, which I don't believe that Mini does. It's the same on my 867mhz TiBook. Frankly, I'd be happy. I'm looking for a good way to turn that off that doesn't rely on modifying the background image's cache.


  2. I remember Adam mentioning being concerned that you're not always asked for your password when sharing another computer's screen. Part of it seemed to be related to .Mac, but there's actually something else going on too.

     

    Leopard has changed the system used to authenticate users. They've removed the old NetInfo database, and moved to a local version of Directory Services, similar to what runs on servers. If you're not familiar with the idea, Directory Services (like Microsoft Active Directory, or Open Directory used by OS X Server) are used to store information about users, groups, and computers on a network. It's responsible for logging users into network users accounts, authenticating them to use services like file servers, and managing preferences. All these things are also done on your individual Mac, to log you in and decide what you can access. Now instead of NetInfo, Leopard does this with a system more similar to what's used by OS X Server.

     

    Along with the new local directory services comes a more powerful method of actually authenticating users to the system, called Kerberos. Kerberos is able to create a single sign-on system, where you authenticate once and are automatically granted access to everything your account has rights to. When this system is in place, you don't need to put in your password every time you try to access something else. The way this is accomplished is that Kerberos issues you a ticket when you sign into it. As long as this ticket is still valid, you never have to put in a user name or password again for anything under the control of that Kerberos realm. What Leopard has done is actually have Kerberos running even on regular OS X client machines. The Kerberos here can only authenticate you to things on that one machine (rather than a whole network), but the principle is the same. Once you're issued a ticket, you don't need to sign in again until the ticket has expired or been purged (like by a reboot).

     

    If you want to see this in action, connect to another computer via screen sharing in Leopard. You should then be able to launch the Kerberos application in /System/Library/Core Services to see a list of your Kerberos tickets.

     

    So, rather than being less secure, authenticating to other machines in Leopard is actually more secure, since it's managed by the powerful Kerberos mechanism.


  3. You could tighten the screws on the left side, but I'll tell you they don't actually screw into anything. They're just cosmetic to match the ones on the right side (by the optical drive). You can take the whole computer apart and never touch the screws on the left.


  4. It's interesting because the slot loading drive in the Wii does accept Game Cube discs which are in the smaller format. So the technology is out there. As far as I know though, the drives used in Macs still do not take small or oddly shaped disks. Granted though, I have not actually tried to test this.


  5. There are apparently two types of Edge networks. If you are on one type, the Edge transfer will be interrupted and the call will go through. On the other type, the transfers cannot be preempted and the call will go to voicemail. If you need the phone set to auto-check mail every 15 minutes, it could become a problem.


  6. I have noticed some MacBooks are a bit misaligned there. We have a loaner unit at work which is that way. I think it's a similar problem to the PowerBook G4 gap issue (where the gap is uneven between the screen and palmrest when closed). It just has to do with a compounding of small misalignments when the screen was attached. I don't think there's any repair on the MacBook that requires removal of the screen aside from replacing the screen. So, given that, I can see why the Genius thought it wouldn't be their fault (and it may well have always been like that). Unfortunately at this point you can't prove how it was before the initial repair and if it changed in the process, so you have little recourse. Since it is a cosmetic problem, it's also not applicable for warranty or AppleCare. The process of taking the screen off is basically the complete disassembly of the MacBook, which is why you were told a $400 labor fee.


  7. They do make the OS more efficient with each release, provided you meet the minimum requirements and maintain a comfortable buffer over the minimum RAM requirement.

     

    Leopard promises to make the most aggressive cut yet in support for older models. G3s are almost certainly out, speculation is some lower end G4s might bite it too. I'd say your Mini is recent enough with a 1GHz+ G4. Just make sure you have adequate RAM. The 512 it shipped with probably isn't enough.


  8. My company paid for iPhones for all the employees. I must admit, there's a certain cachet to having Mac techs fanning out over the Baltimore/DC area with the super-hip Apple phone. The company paid for 4gb models, but we had the option to purchase an 8gb on our own and eat the extra $100, which I did.


  9. Which kind of iMac do you have? If it's a G3 or G5, it uses a standard power cable you can get anywhere for cheap. It wouldn't hurt to get one and try it. If the power cord doesn't fix it, you could have a power supply issue. As you surmised, it is possible for a power supply to fail in such a way that it draws down too much power. Out of curiosity, your iMac doesn't make any buzzing noises when plugged in does it?


  10. The startup chime's volume can be set by the OS, but if you can't get it back that's not an OS issue. Try resetting the computer's PRAM by holding Apple+Option+P+R while starting it up. The computer should try to start then shortly reboot again. Hold it through 3-5 reboots, your chime should come back.


  11. If Disk Utility can't fix it, then it's time for the big guns. I use Disk Warrior constantly in the field, as in several times a day. Can't recommend enough. There's only a few things it can't solve, like overlapped files, but in that case backing up and reformatting is the safest bet anyway.


  12. The only models where matched pairs improve performance are the ones with the GMA950 Intel graphics. That includes the Mac mini, the Macbook, and the low end 17" iMac. Also the Mac Pro requires matched pairs (you have no choice). For the other iMacs and the MacBook Pro, it makes no difference.


  13. I wouldn't recommend opening up the MacBook just to try and dust it. I haven't noticed a lot of dust buildup in them, there's no reason to risk damaging anything just for that. The screw count to get the top case off goes like this:

     

    2 on the right side

    4 along the back

    3 on the bottom

    3 capture screws on the RAM/hard drive cover plate

    4 inside the front edge of the battery bay

    2 by the battery connector

    3 by the RAM slots

     

    Accumulation of dust isn't the major problem it's made out to be. Some models are prone to collecting dust, like the iMac G4 (our lab tech refers to them as vacuum cleaners). I can't recall ever opening an Apple laptop with a major collection of dust in it. Most of them are pretty clean. Tower models it's more reasonable to clear dust from just due to the ease of opening them, and their tendency to collect more of it.


  14. If you're going to do it, find a take apart guide an pay attention. The iMac G4 is a pain in the butt. You must reapply thermal paste every time the bottom housing is removed, and tighten the screws to a certain amount of torque. If you do not, you risk overheating. On top of that, I've just always found the drive cage really annoying to finagle out of there.


  15. Oh, also Apple Remote Desktop has the ability to track IT related tasks either on its own or through a central task server. I've never messed with it personally though. It seems like it's more suited to use in an internal IT department, not tracking tasks for numerous clients as an outside consultant.


  16. The company I work for uses a Filemaker Pro database for that. We run a Filemaker server at the office that we can connect to, but most of the work done by field techs is on a database stored on our laptops. That database then syncs tech notes and billing info back to the central server.


  17. We're sort've in limbo at the moment with the iPhone having a great interface as an iPod, but lacking the storage and some other little features it needs to replace a real iPod. I'm really hoping to see a new 6th gen iPod based on the iPhone.

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