Slow wifi on MacBook Pro when connected to Thunderbolt Display

Hello everyone,
I've had my MacBook pro (2012) for about a year now, and I bought the Thunderbold Display last christmas.
Everything has been working fine until a few days ago, when I realised that my wifi connection speed was very very low (less than 0.5 mb or even no connection) whilst my other devices like iPhone and Windows pc were doing fine on 10mb.
I tried changing the router channel options but it wouldn't work. Then I disconnected the MacBook from the TB and wifi speed went up immediately...
Consequently I'm guessing it's the TB's fault. Can anyone help me find a solution? Or if i should bring it back for repair? (btw it's slow both with lid open or closed)
Thank you!

I am also experiencing very similar issues. For the past few weeks I have been suffering from really poor wifi performance on a Macbook Pro 13" Retina (Late 2012).
I have gone as far as purchasing a new router, changing router channels, encryption, switching back to 802.11g etc and nothing has really helped.
I downloaded a free app called NetSpot to help diagnose the problem. Today I had it open whilst plugging in my external monitor and I noticed a huge difference in signal to noise. The screenshot below shows that difference and I can re-produce it over and over again.
The external screen is plugged in via Thunderbolt. Interestingly only one of my thunderbolt ports seems to work with the screen (not sure if that is how it should be).
I can also see almost double the number of wifi networks with the screen unplugged and the internet performance is much better.
So my conclusion so far is that an external screen via thunderbolt is causing some serious performance issues. I am going to test the HDMI port later today and see if that helps the situation.

Similar Messages

Problem waking MacBook Pro when connected to external display

I have the new 13" MacBook Pro and like to use it connected to an external VGA display (Xerox) with the MacBook Pro in closed clamshell mode. The problem I am having is that after working for a a few hours, when I put the Mac to sleep with mains power connected, usb keyboard connected and the external display connected (via mini display to VGA adapter), the Mac will sometimes refuse to wake. I have a wireless Mighty Mouse also and the Mac is set to wake with Bluetooth devices. When I click a key on the keyboard or click the mouse a few times the pulsing sleep light at the front of the Mac goes solid but nothing appears on the external display. If I open the MacBook Pro the solid light goes out but the Mac does not respond. If I close the MacBook Pro display, the solid light comes on again. I have no option but to force a restart. This is an intermittent problem. I have yet to have this happen when no external display is connected.

I have the exact same problem.
Here's my story:
To give you some backgroud, my setup involves having the macbook on a mstand hooked up to an external monitor. I run a usb hub from my macbook, this is where my mouse transceiver is plugged in. I use am Apple wireless bluetooth keyboard (latest slim model)
I recently purchased the 13.3' inch 2.26 MBP as I gave my older 2.0 uMB to a family member. The computer is in the stock configuration with no hardware upgrades.
I have noticed weird behaviour when waking the computer from sleep when the lid is closed. When i wake the computer up (by tuning on bt keyboard), the keyboard light blinks like there is not bt connection and the computer will wake in an inactive state. The led light will be on, but when i flip the screen up....nothing. Screen is dark, keyboard pressing does not illicit any responses. I have to do a hard reboot by holding down the power button to restart the computer. Unfortunately any previous data or work is lost.
I work in IT so I completed troubleshooting and also things outlined on forums in google. Reset PRAM, reset SMC and also reinstalled OSX. Still I get the same result. Fearing I purchased a defective unit, I called Apple and they told me i could exchange the computer so I dropped by the apple store and exchanged it quite easily.
I've spent hours restoring from time machine and I am experiencing the same issue on my new laptop. I'm now assuming its not hardware but more firmware related as I had to do a bluetooth firmaware upgrade when I bought the computer when I checked for software updates.
Is anyone else having any wake issues with their new MBPs? And what should I do next? Should I exchange for a 3rd unit? Thanks for you help everyone.

Brand new 15" MacBook Pro Retina - unplugged from Thunderbolt Display and Keyboards today find keyboard alpha-numerics not working; except the function keys, delete key, tab key, command/ctrl/shift/alt/fn and arrow keys; and 7/8/9/u/o/j/l nudge cursor

Brand new 15" MacBook Pro Retina - unplugged from Thunderbolt Display and Keyboards today find keyboard alpha-numerics not working; except the function keys, delete key, tab key, command/ctrl/shift/alt/fn and arrow keys; and 7/8/9/u/o/j/l produce cursor nudges.

It's a new machine - and the Thunderbolt Display is meant to work with it. You need to just make an appointment at your local Apple Store and have them fix whatever is wrong.
If you like, you could always try a SMC reset and a PRAM/NVRAM reset to see if either of those will get your keyboard back in working order...
Clinton

MacBook Pro Retina hangs on startup when connected to Thunderbolt Display

I have a MacBook Pro Retina and it's basically almost always connected to my Thunderbolt Display. Each time I start it up, I open the MacBook just slightly and press the power button - and almost instantly the MacBook goes ontop the startup Login screen and at this point is where I close the MacBook and login through the Thunderbolt Display.
Since last night for the very first time - My MacBook Pro hangs on a white screen and takes a long time before going to the Login screen. I've tried to swith the Thunderbolt Display off from the mains - I've also tried to boot up my MacBook on it's own without it being connected to the Thunderbold Display and all is fine (it almost immediatelly shows the Apple logo and then staright onto the Login screen then BUT as explained, as soon as the MacBook is connected to the Thunderbolt Display and I power it up - it hangs on a white screen for about 30 - 60 seconds before it goes to the login screen!
I have no idea how from one day to the next this could happen? Perhaps it's some Apple updates I've made recently which I cant really recall because I usually just update software when required to do so.
Hoping anyone can help.

Hello FunkTunes,
I recommend this section of the article Apple computers: Troubleshooting issues with video on internal or external displays found here http://support.apple.com/kb/ht1573.
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
All the best,
Sterling

ITunes Freezes/Crashes On MacBook Pro When Connecting iPad

iTunes (v10.7) crashes on my new MacBook Pro Retina (OSX 10.8.2) almost all the time when I connect my iPad Retina (IOS 6.0.1). When i connect via USB, iTunes comes up but the iPad does not appear as a recognizable device. This problem started about a week ago and prior to that there was no problem connecting. What can I do to correct this problem? Is it related to iTunes 10.7? Is it related to a MacBook Pro Retina problem? Is it related to an OSX 10.8.2 problem? Is it related to an iPad Retina problem? Is it related to an IOS 6.0.1 problem?
I have tried using a different iPad-to-Mac USB cable to connect with no success.

Turns out all I had to do was reboot the Mac and the problem was cleared.

My MacBook Pro overheats when connected to Thunderbolt Display

I've had these since August 30 of this year. I switch to Mac and brough home two Pro's and two Thunderbolts. They have been doing fine, not a problem yet. Until Friday, when mine started overheating. My MacBook Pro Retina runs fine on it's own. But I came home, plugged it into the Thunderbolt, and immediately it started overheating. It did the same thing, when I woke up Saturday it was so hot, I could not pick it up with my hands. I found another thread with similar problems, but it was four pages of "I have this problem, too". It's not sitting on a desk, it's in the stand sold by Apple, and I"ve had it plugged up to the Thunderbolt 80% of the time since we bought it, but never had a problem until five days ago. Clamshell mode in a stand with wireless Keyboard and Track Pad, all the newest releases of Pro Retina and Thunderbolt. All the updates, everything. Any ideas?

Connecting an external monitor/display turns on the high-performance graphics adapter which can generate significant heat. The base-plate can get pretty hot (Apple states this and for this reason says to not use the MacBook Pro on your lap. They don't even refer to them as laptops.). Just make sure that nothing is blocking the cooling ports under the display hinge. If the MacBook Pro actually overheats, it will shut down. So, don't worry yet.

Constant Crashing of MacBook Pro when connected to Iphone 3GS 4.3 via USB

The USB Personal Hotspot works great with 3GS and MacbookPro EXCEPT for the constant crashes where you have to reboot. This ONLY Happens while connected via USB to 3GS with Personal Hotspot.
It never happens via regular wifi connections.
Is there a bug in 4.3?

You people do not know how relieved I am that this isn't only happening to me. The thought of returning my 4-day-old 2011 macbook pro is just plain torture.
http://discussions.apple.com/thread.jspa?threadID=2799691&tstart=0
the solution's here.

What can I do to make sure all my information (Notes Included) transfers to my new MacBook Pro when connecting for the first time?

I am about to connecting my Iphone to my new Macbook Pro for the first time. I just want to make sure that all my information: contacts, messages, notes, everything will still be on my phone. I just dont want to connect then find out I lost everything on my phone.
Help! I am really bad with technology...

When you first sync with a new iTunes library iTunes will delete any iTunes media from your phone and replace it with the media in the library being synced with. iTunes media includes things like apps, music, movies, tv shows, podcasts, books, custom ringtones and photos synced to your phone from a computer. If you are also syncing your contacts and calendars with your computer it will replace the ones on your phone with those on your computer. If your iTunes library, contacts, calendars and iPhoto are all empty, you will end up with all of these being empty on your phone.
To preserve these you need to follow the steps in the linked article. This will transfer purchased media from your phone to your iTunes library and transfer contacts and calendar entries to your Mac. As discussed in the guide, it will not transfer music not purchased from the iTunes store (which can only be done using 3rd party software such as the ones discussed) or photos synced to your phone from another computer (which can be transferred to your computer using an app like PhotoSync). These will need to done first or you will lose them, as discussed in the guide.

No response from MacBook Pro when connecting Samsung Galaxy S4 to a USB port.

The PTPCamera process starts, but is only visible in the activity monitor. The phone itself reports being connected but it does not show up in Finder. I am using the USB port on the MacBook, which works with everything else. I have also tried Kies, which does not find the phone either. No problem when connecting the phone to a PC. Any known solution to this problem? I would be greatful for helpful ideas.
My MacBook Pro: OS X 10.8.4 2.53 GHz Intel Core i5 8GB. All available updates installed.

Hello HowardShachter! Yes I can see how that can come across as puzzling! I can certainly step in and review this with you! Where did you purchase the Uniden device? Have you verified that your Bluetooth settings are correct within the phone? A hard reset is typically a last resort to try and resolve the issues, but definitely is a possibility to try if the problem persists. Keep us posted! Thanks in advance!
KristieQ_VZW
Follow us on Twitter @VZW Support

Why does my 27 inch LED cinema display freeze my Macbook Pro when connecting?

Hi,
I've had a 27 inch cinema display for about 2 years now and love it.
However, a good 50-70% of the time whenever I attach my MacBook Pro, currently 15 inch late 2011, rather than waking up the MBP, it just freezes the computer. The same thing used to happen with my 13 inch MBP.
Any ideas why that is?
thanks,
TT

I finally decided to just take my MBP down to the Apple store and see what would happen if I connected it to one of their new ACDs. At 1st, the guy at the Genius Bar told me that my MBP only supported 1280x800 as a maximum resolution. I told him that was for my MBP screen, and not an external monitor. Finally I convinced him to let me connect my MBP to one of their monitors. Low and behold, looking at the Display settings pane I saw some addtional resolutions, including 2560x1600!
So, now I have confirmed that my MBP can drive an external monitor to a resolution of 2560x1600, using just the single mini displayport connection. I just have to figure out what's wrong with my ACD. Suspecting that my older ACD might not support this higher resolution, I did finally discover that my model only supports a maximum resolution of 1920x1600.
Sorry for all the confusion...

Macbook Pro cannot connect to digital display.

Today when i plugged in my Macbook Pro 13" (early 2011) there was no output. The monitor was in power save, and my compute did not detect the monitor (note i have been using this setup for months without problem). Every time i plug in the dvi cable ( to my mini display port adapter i get the ususal blue flash but then nothing else happens.
I've tried a new dvi cable, tried a different monitor on my mac.
then i tried both monitors on a windows computer, and they both work,
then i tried using VGA out on the macbook (using another adapter) and that surprisingly worked.
Only thing left either the computer (hardware or configuration?) , or the DVI - mini DP adapter. They cost $30 and I really don't want to spend that kind of money on it unless i know that is th cause.
is it possible for my mac to have VGA out but DVI/HDMI are broken. or is it just my adapter?

igotsnomoney wrote:
is it possible for my mac to have VGA out but DVI/HDMI are broken. or is it just my adapter?
VGA is analog and the others are digital interfaces so maybe there is something wrong with the video card.
See if smc and pram reset has any affect.
Only thing left either the computer (hardware or configuration?) , or the DVI - mini DP adapter. They cost $30 and I really don't want to spend that kind of money on it unless i know that is th cause.
Actually you can get one for $6.65 from monoprice.com.
Mini DisplayPort | Thunderbolt to DVI Adapter

MacBook Pro cannot connect to external display (projector) under Windows

Our office has got one of those lovely new 13" MacBook Pros and we cannot figure out why it cannot connect to either of our 2 projectors with Windows 7.
We have an older MBP with NVidia graphics that connects just fine under both OS X and Windows. And this machine connects fine under Snow Leopard.
There was a recent Thunderbolt chipset update and we applied that; on the Windows side the Intel driver has been updated but nothing happens. Have also zapped the PRAM to no effect.
To add another wrinkle: I just connected the MBP to my Cinema Display and the external display shows fine in both OS X and Windows--Windows didn't even require me to go to the control panel.
This leads me to two thoughts: either it is something with the Thunderbolt to VGA adaptor (hard to believe, though, since it works for OS X) or it is something to do with the native resolution of the projector (equally hard to believe, as changing through various settings in Windows NOTHING happens on the external projector--it doesn't blink, go back or anything.)
Any ideas?

I wish I could find the discussion, but I cannot.
There was a discussion about the Windows 7 driver for the Thunderbolt port. The conclusion I believe was that it only outputs digital signals, not analog.
The other conclusions were:
A USB-VGA adapter adapter bypasses this limitation because the driver is in the adapter itself and works regardless of the OSX/Windows operating system in charge.
Run Windows under VM, where OSX is in charge and can create analog output through Thunderbolt
If only I could find that thread ...

I am stumped I do not understand why my roommates macbook pro when duel screened will display perfectly on my monitor while mine refuses to, but mine will display perfectly when using another monitor that is not mine. Please help me out.

One day when using my duel display the second monitor decided it wouldn't display at full resolution in the middle of doing something i was confused. I use a mini display to hdmi then hdmi to the second monitor. I thought maybe the converter or cable died. I bought another another mini display to hdmi and tried another hdmi cord and the same issue. My roommate has macbook pro as well so i decided to see if it was the monitor, when i pluged the mini display converter into his and used the external monitor it displayed perfectly not below resolution. Doing this I knew it was not the monitor or the mini display to hdmi or the hdmi cable. I took it into the genuis bar assuming now that it was my grapics card or logic board. When the genuis went to duel screen it on a cinema display it displayed perfectly. So went home tried to duel screen it again and still not displaying at full resolution. That is where I am stuck, in summary:
My screen used to display perfect resolution on a second monitor and suddenly did not.
Tested two mini display to hdmi and hdmi cords both were fine.
Tested to see if monitor was issue but displayed perfectly when i used roommates laptop.
Went to genius bar and displayed perfectly on second monitor so it can display perfect resolution on apples monitors but will not do so anymore on my monitor, even though roommates macbook pro will display perfect resolution on my monitor.
I am beyond confused.

Apparently you have tried everything except - take the monitor in question to the Apple Store along with your computer. If it works there, the mystery continues.

HT5019 Can I turn off my macbook Pro when using a Thunderbolt external display?

I have attached a Thunderbolt disply to my MacbookPro when not traveling. Is there a way to turno off the Macbook screen and only have the Thunderbolt running?
Thanks!

This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum.

Macbook Pro 2.3 GHz Thunderbolt Display Slow Sluggish

My spces ares:
2.3GHz Intel Core i7
8 GB 1333 MHz DDR3.
When I hook up my Mackbook Pro to the Thunderboldt display, I'm experieincing sluggish and poor perfromance when I use applications like Photoshop In-Design.
I took my laptop and Thunderboldt Display to the Mac store and there was not much progress....
Thinking about upgrading to 16 GB of Ram.
It's getting really frustrating now. Please let me know.
Thanks,
Ben

You should also ask this in the MacBook Pro forum. This is the forum for the white and black plastic MacBooks that were discontinued in 2010. You should also post this question there to increase your chances of getting an answer.
https://discussions.apple.com/community/notebooks/macbook_pro

Slow wifi on MacBook Pro when connected to Thunderbolt Display

Similar Messages

Maybe you are looking for