I have a MacBook Pro with retina display model A1502. I updated it to MacOS X El Capitan. The Wi-Fi connection is still not working. It works for sleep mode.  I followed this answer  but it is not working for me.
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I've tried everything I can think of. Resetting the router, changing the channel number and band.   The internet connection is fine, and then just hangs for a minute or 2, then returns to normal.   The wifi icon remains connected, and I have the latest 10.10.4 update installed. At first I thought it was a DNS bug with Yosemite, and have played with the settings such as changing DNS provider, changing the IPV6 to IPV4 only etc.  Driving me nuts. Has anyone had a similar problem? I've checked the surroundings with wifi scanners and have chosen the best channel available.     One thing I have noticed, it seems a lot more reliable on 5GHz as opposed to 2.4Ghz It seems to affect my Macbook Pro Retina 13in Early 2015 a lot more than the other devices on the network. I'm using a Virginmedia  1.
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I'm on a new 2019 MacBook pro 13”. The TouchID fingerprint sensor is working. But my touch bar has gone completely blank. I tried restarting my MacBook Pro but it did not help.    I've also done a factory reset, SMC, NVRAM/PRAM and an Apple diagnostics, hoping to fix the problem but it did not work.  After re-install macOs, I was able to see touch bar configuration on System Preferences -> Keyboard menu:    I am not able to see touch bar option and it is completely dark black.  I tried resetting the touchbar through the terminal by using the below syntax:   sudo pkill “TouchBarServer” sudo pkill "Touch Bar Agent" sudo pkill ControlStripAgent   I have tried to verify whether they are running by using below command and could not find any process running.   ps -A | grep -i "touch bar agent" ps -A | grep -i "controlstrip”   I can see the control strip and touch bar server is running in activity monitor:      I could see this is a common issues across mac book pro and customer don’t have any proper fix for it.
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Up until recently I was using my 2007 MacBook perfectly fine with my old AirPort Express. A few days ago I purchased a used mid-2010 iMac which is now running OS X 10.8.3 (something I'm still not too sure I like). When I first brought the iMac home and connected to my network it did so just fine but the AirPort icon in the menu bar showed there was no internet connection, despite the signal being full. I then followed some step-by-step setup which rebooted the AirPort Express and all of a sudden I had internet! Great! …except since then my MacBook has the same problem my iMad had, i.e., it connects to the network just fine but the network icon shows no internet connection :(  I should mention that my MacBook is running OS X 10.6.8. I'm wondering if this is an OS compatibility issue or… Has anyone experienced something similar?
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I have a Macbook Pro Retina with the following hardware:  Model Name: MacBook Pro Model Identifier:   MacBookPro11,1 Processor Name: Intel Core i5 Processor Speed:    2.4 GHz Number of Processors:   1 Total Number of Cores:  2 L2 Cache (per Core):    256 KB L3 Cache:   3 MB Memory: 8 GB Boot ROM Version:   MBP111.0138.B15   I recently updated to OS X El Capitan; I have had the same problem occur to me twice now and it's getting me mildly concerned.  I randomly have CPU usage spikes from kernel_task, the highest of which I have seen was 660% CPU. This is frankly an unacceptable and unnatural setting for my CPU (I typically have a total usage of about 2-3%). The highest I've screenshot is this:    The first time, I did not record what I had open. The next time, however, I was ready, and this is the exact list of what I had open:   Two YouTube video pages (using the processes Safari Networking with a max of about 44% CPU, typically stabilized at 8-10% and https://www.youtube.com, which got to around 51% CPU max, typically around 10-12%) Messenger. Doubtful that this had an effect, but, hey, you never know. Skype. This dude was running at a consistent 50% CPU usage.   It is worth noting that I had to close both YouTube windows to actually gain enough control of my computer to open Activity Monitor. None of the aforementioned processes were spiking, just kernel_task.  Also worth noting is my fans - the fans were on maximum, blowing cold air. Even though kernel_task was spinning at 660% CPU, there was no actual heat being produced, as far as I could see.  It's at this point where I force shut down the computer - I had about .5 frames per second (1 frame every 2 seconds, was looking at the clock) and was getting nowhere when it came to even attempting to fix it.  If there is a bug related to this that I have missed, or some wacky thing with OS X in general that I'm missing, please let me know, as this is extremely frustrating and more than a little disturbing.
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I started to download the El Capitan upgrade, but then I shut down my computer. The day after I wanted to continue the download but in App Store it shows "Waiting..." and doesn't do anything. Also when I go to the updates section, it shows the button "Download" but it's inactive. Maybe someone can help me? I tried to find the download file in some directory to delete it and start over but I couldn't find it.
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I have 2 MacBook Pros and one Thunderbolt Display (27 inch). Both MBPs support Thunderbolt connectivity and work fine with external display. I need a way to switch between 2 MBP, without changing the connection everytime.   Is there any hardware / KVM switch which supports this functionality?   MBP Models are as below:   MacBook Pro (13-inch Mid 2012) MacBook Pro (Retina, 15-inch, Late 2013)
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We have a late 2012 27 inch iMac. It has a 2.9 GHz i5 processor and a 1 TB fusion drive along with 8 GB of RAM. I recently upgraded it to El Capitan.  A couple of months ago it randomly started to not wake up after being asleep. We would have to unplug it and plug it back in to get it back on. It also would just randomly shut off while we were using it. If we had music playing, the screen would go black and the music would stop so it's not a display issue.  I took it in to our local Apple store and talked to them about it and they said the first thing they would do would be to reinstall OS X. So I decided to do that myself but that still did not fix the issue.  I then lugged it back into the Apple store about 2 weeks ago and left it with them for a few days to get to the bottom of it. They repaired OS X and then put it through a battery of tests to see if there were any issues with memory or the hard drive but everything came back fine. They then left it plugged in with a bunch of graphics programs and videos playing and still had no issues.  At this point, I was thinking it was a power issue with the plug we were using. When I brought it home, we left it plugged in and running in our dining room for a few days and did not have any issues. I gradually loaded programs back on and still did not have any issues. I then moved it back upstairs but the other day it started acting up again on my wife. I moved it back to our dining room thinking it was the outlet up there, but it's exhibiting the same behavior there now.  After doing some searching online, I found this post . It seems to describe the issue we are having.  I was able to check the Console and it says the cause for shutdown is 0. I'm pretty sure the Apple store ran the hardware test and memtest while it was there. I have repeatedly reset the SMC, which the Apple store employee informed me is basically what I'm doing every time I have to unplug it and plug it back in.  The only thing I haven't done yet is a PRAM reset.  So, now I'm not sure what to do next. According to that post, his logic board needed to be replaced. The Apple store quoted me $583.32 to replace the logic board if that was what was needed. But I only want to do that if I know definitively that's the issue.  So sorry for the long post, but does anyone have a suggestion on how to  root cause this?
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What are my options? I tried to do a OSX recovery, but now the macbook air can't pick up my  wireless (but wireless is definitely working). At this point, I'd be happy with either Ubuntu, OSX, or any Linux distro working.
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I can't browse to any website using Safari; yet, Google Chrome and Firefox are working fine. The Mac App Store also reports that it cannot connect.  I am running OSX 10.7.2 on a 2011 MacBook Pro.
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I'm facing this issue after updating iOS11 in my recently bought iPhone 7  I usually turn off wifi during the night and found it ON in the morning. It automatically turns ON resulting in unnecessary battery drains.  Would appreciate a fix !!
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I don't know how to update Nvidia graphic card drivers on MacBook Pro Retina. I have been a Windows user and a gamer for a long time where we expect frequent driver updates.   My expectations revolve around whether Nvidia releases graphic driver updates for Mac and how to check for pending updates.  Where can I see the versions of drivers on OS X?
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I just bought a new late 2013 iMac and a new late 2013 Macbook Pro retina. Also bought an Apple thunderbolt cable.  Pressing CMD+F2 (enabling Apples "Target Display Mode") on my iMac lets me use the iMac as external monitor for the MB Pro, but I'd like it the other way around (which doesn't seem to work).  Does anyone know how I through Thunderbolt (for speed, am aware that apps like  and Screen Recycler can do it through WiFi) so that my MB Pro becomes an extra external monitor for my iMac?  While  addresses this problem for earlier hardware and software, I'm looking for a solution that supports using a thunderbolt cable and works with late 2013 Macs with OS X Mavericks.
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Please, does anyone know whether Macbook (2015) with MacOS Sierra (10.12) is able to drive Dell P2415Q 4K (3840x2160) monitor at 60Hz? What dongles do I need?  I have  which is said to support "UHD (3840 by 2160) at 30Hz". But Apple's  states:     With macOS 10.12 or later, MacBook (2015 and later) and MacBook Pro (2016 and later) support these resolutions and refresh rates over HDMI 1.4b using the USB-C Digital AV Multiport Adapter:         4096x2304 at 48Hz refresh rate   3840x2160 at 60Hz refresh rate (mirroring is not supported at this resolution)         MacBook (2016 and later) and MacBook Pro (2016 and later) support 60Hz refresh rates over HDMI when used with a supported HDMI 2.0 display, an HDMI Premium Certified cable, and a supported USB-C to HDMI 2.0 adapter.   So I'm confused now: would it work somehow? Would it work over HDMI? Would it work over DisplayPort? Is the adapter I have suitable?
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Several people have posted about how they use 3 external monitors with their MacBook Pro Retina. see:        However, when I attempt to do this on my 15" late 2013 MacBook Pro Retina, I can only run 2. Either, 2 thunderbolt, or 1 thunderbolt and 1 HDMI. When I plug in all 3, only 2 of them work.  Apple tech says     Yep. You can only have 2 external monitors (unless you want to add a usb monitor).   Is there some trick I am missing? Some setting to tweak? I have 3 monitors just waiting for the solution. One of my monitors feels quite left out...
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I have a MBP late 2011 running El Capitan, recently my battery died (x over the icon and "no battery available" in the dropdown.) I've noticed since then that CPU intensive tasks are very slow, and I read that without a battery macs will throttle the CPU to half capacity.  So now I'm looking for one of two solutions:  1) Either somehow disable the throttling, or  2) Trick the computer into thinking it has a battery.  In regard to the first one I've tried a few things such as described , removing a plist file that supposedly controlled it, but that hasn't helped. Any help would be greatly appreciated, TIA.  Edit: I've looked over the question about a 2006 MacBook, it's similar but I've tried everything outlined there and nothing has worked. I'm curious if there are any new ideas. I think the difference may be El Capitan.
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So it turns out I can not install Sierra because I have a Mid2009 Macbook Pro. I wanted to update to El Capitan, but it turns out its no longer available on the app store?  Any ideas, how to get El Capitan?
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I have a Late 2011 Macbook Pro 13" (running Lion - OS 10.7.4) which I use with a dual external monitor setup. I have two 21" LCDs that I use as external monitors. One uses the built in Mini Display Port on the Macbook Pro and the other is connected via a USB to DVI adapter (Diamond DVILink).  The problem I am having is with the 13" built in display of the Macbook Pro. I would like it to remain closed and unused (I prefer the dual monitors at same resolution), however I cannot seem to "disable" the display in the display preferences applet. So even though the Macbook Pro lid is closed the operating system still makes use of the display, even though the apple logo on the back of the display is unlit. I have tried to move the laptop screen off out of the way in display preferences but I find when I "sleep" my setup that any applications that remain open move to the laptop screen. This makes it difficult to locate the application windows when resuming from sleep.    Does anyone know of a way to disable the laptop built in display so it is not seen by the OS when external monitors are being used?