Lenovo x220 Wifi stops with external monitor

Hi. When I plug an external monitor into my X220 the WIFI seems to cease. As soon as I unplug the monitor all is fine. Any ideas? Thank you.

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Yosemite: Turning off Macbook Pro screen (lid open) with external monitor connected

Here we go again, this worked pre-Yosemite. Now it seems this trick no longer works. After following these steps again the screen on my Macbook Pro now turns on after logging in and opening the clam shell.
Anyone figure out/know a way to turn off the screen on the Macbook Pro with external monitors plugged in? (yes, closing the clam shell–but I'm referring to keeping the clam shell open with the display turned off)
http://gizmodo.com/5938452/a-trick-to-make-using-an-external-monitor-with-your-m acbook-way-better
To execute in Terminal:
sudo nvram boot-args="iog=0x0"
To undo in Terminal:
sudo nvram -d boot-args
Once you type it into terminal I believe you need to enter your password. I then restart my machine. Now the TRICK is to either restart your machine with the lid already closed (hit restart then slam the lid!) OR turn the machine on for the first time (then quickly slam the lid!) once you are past the login screen you can open the lid.

Has anyone experimented with tip 2 (active corners)? Perhaps it still works.
http://www.cultofmac.com/176329/turn-off-internal-lcd-display-of-your-macbook-ai r-os-x-tips/
Κοσμά τι λες; Τα έχεις μπερδέψει. Άλλο συζητάμε εδώ. Το ότι δεν μπορείς πια να δουλεύεις μόνο με την εξωτερική οθόνη (να έχεις σβηστή την ενσωματωμένη οθόνη όταν έχεις συνδεμένη εξωτερική).

Using the GT70 with external monitor and lid closed

I wasn't sure where to post this question.
I have several laptops and use external monitors. I close the lid on the laptops and the display continues to work.
On the GT70, the system shuts down. It won't allow me to use the external keyboard and mouse or display the session.
Any suggestions if there is a configuration option to allow the GT70 to continue to function with external monitor and lid closed.

Yup. This is a windows setting. You need to go into your control panel -> power options -> "Choose when the computer sleeps" and "Choose what closing the lid does"
That should solve the problem. I currently have my GT70 hooked up to a 42" TV and I can close the lid and it stays on and the TV continues displaying as well. No problems. =]

Mountin Lion has trouble with external monitors

Not so much a question as a shout-out. Since going to Mountain Lion, my pretty new (February this year) MacBook has been having no end of trouble with external monitors. I use it a lot with the clamshell closed with two different external monitors of two different sizes, one at home, one at work. It sometimes thinks the one is the other, or if I unplug the monitor in sleep, when I later open the clamshell, the screen stays black and I have to force a reboot with the power button. Never had these problems with exactly the same set-up in Lion. Sometimes it also refuses to find a connected monitor or projector, I have to pull the dangle and put it in again.

If memory serves, one of the 'flaws' with BM's hardware is that it will not convert on-the-fly. So if your sequence doesn't match what the TV is accepting, you get black.
For example, my TV will not accept 1080p, only 1080i, so working in a 1080p sequence would produce no image for me as the BM will only output exactly what's in the sequence, it can't convert my 1080p/24 sequence into 1080i/30 for output.
Now I'd expect your TV would have no trouble accepting a 720p signal but, maybe the above data will lead you down a path of investigation.

MacBook Pro with external monitor and keyboard.

Hello, everyone.
I've tried to find the answer for this question but haven't found a clear answer with my Google search.
My older Powerbook G4 will not allow me to work with an external monitor and keyboard with the screen in a closed position. I am about to purchase a new MacBook Pro and would like to be able to use it at home with a larger monitor and keyboard but with the lid closed and its built-in screen turned off. Can this be done ?
How can a MacBook Pro be used (turned-on) with external monitor and keyboard while the lid is closed and the its screen is off ?
Thank you in advance for your answers.
Joseph

Hi Niel,
I have the same problem with my MacBook and I followed the instructions you posted. My issue is that when the computer wakes up after clicking the buttons on the keyboard it then quickly goes back to sleep. I can't seem to keep it awake when the lid is closed. I've been searching for an answer without any luck. Any idea how to solve this problem?
Thanks!
P.S. After I finished posting this message I figured out my problem. While fiddling with my computer and monitor, I inadvertently disconnected the power. After reconnecting the power, I was able to wake my computer and keep it awake. A note to other people having this issue: the computer must be connected to a power outlet to run in closed mode.
Message was edited by: qwertyphd

Can I use MacBook pro A1211 with external monitor, screen has died but

CCan I use MacBook pro A1211 with external monitor, screen has died but computer seems fine

Hmm seems like this model has DVI out. You could just plug a standard DVI monitor into that. Or use the DVI connector (VGA supported with included adapter; S-video and composite video supported with optional adapters) adapter that came w/ your machine.

MacBook Pro won't stay asleep with external monitor attached. When sleep is selected from the Apple menu the computer will go to sleep only to continually wake up...go back to sleep...wake up...etc. every few seconds.

MacBook Pro won't stay asleep with external monitor attached. When sleep is selected from the Apple menu the computer will go to sleep only to continually wake up...go back to sleep...wake up...etc. every few seconds. This only happens when using the external monitor. Does anyone have any suggestions?

Mine does that too. The worst thing is when it goes to sleep, then wakes up and keeps running while the lid is closed and it is wrapped up in a case. I am afraid when the hot weather comes it is going to burn up. I am hoping Apple fixes it in the software or they may have a melted MBP to replace.
Then when I open the lid it is crashed running at fill tilt, pumping out heat to beat the band. I am forced to hold the button down and reboot.
I wiped my hard disk and reinstalled my OS, but it didn't help. I reversed my OS to 10.5.0 and it solved the DVI problem but still won't sleep. This post will probably be deleted by Apple, they did it a few days ago. I just don't know what to do, and I consider myself a real Apple expert. Just hoping you realize you are not the only one.

Macbook stopped work with external monitor

Hello!!!
I need a help!
I always used my MacBook 13" with a Samsung 932BW as external monitor.
Yesterday morning, I had to change this monitor to another one. After that, my 932BW doesn't work any more with my Mac, that just blink when I plug in the DVI or VGA cabe (I've both mini-Dvi adapters).
So, any help to me????
Thanks

See the following Apple article:
http://support.apple.com/kb/HT1573?viewlocale=pt_BR
In particular, you may have to trash the preferences file for displays, which is a file(s) that has "windowserver" in its name. Instructions for how to do that can be found through the above link.

Lenovo x220 tablet pc with ubuntu 12.04 Shuts down and starts up unexpectedly

Hi
I bought a lenovo x220 tablet pc and installed ubuntu 12.04 with GNOME 3 a while ago.
It was working fine at first however recently:
1. the computer shutsdown unexpectedly, the shutdown dialog appears (the one that gives you the option of restart, cancel, or shutdown); I try to cancel it however the laptop would just power down (without going through the proper shutdown routine). Once it powers down it would try to reboot on its own but halfway during the reboot it would power down again.
2. At times when I do shutdown normally, I would just close the lid and the computer would start back up again, without my pressing the power button (just moving the monitor makes the computer startup)
In addition I dropped the computer on the battery side at one time and cracked the plastic casing a little. The above mentioned problems still exists when I use the laptop without the battery.
Does anyone have any suggestions on how to go about finding out what's wrong and how to fix it.
Thanks in advance for the help.

Hey mate,
sorry to here about that. Here may be a path to the clearing where a possible solution is waiting: Nowadays it is standard to let the pc (or more exactly the power manager of the OS) listen to the ACPI bus for messages like power button pressed and such things. If such a message surfaces and your power manager picks it up it is possible (if you have this configured as an action) that it shuts down you computer or restarts it. To eliminate this possibility you can try one of the following to things:
1. stop your power manager from working
2. get yourself superuser rights and use acpi_listen to listen to the acpi bus (if not working then install "acpid", shut down your power manager and start acpid as service)
3. open your system log (e.g. /var/log/messages) and search for things connected to your power manager or acpi
Please tell me if it worked! If not you could also post the content of your system log for analysis.
Using x230t (i5-3320M, 8GB RAM, 256GB SSD, 80GB mSata-SSD) and loving it!
"I may not own the world but I own my mind and therefore the world is at my feets." (me)

HP Pavilion DV6; Black Screen & Atikmpag.sys BSOD with external Monitor

Hello Guys.
I have HP Pavilion DV6 Core i7 with ATI Mobility Radeon HD 5650 Graphics Card. Two weeks ago, I started getting continous Atikmpag,sys BSODs. The operating system also started giving me warnings about the hardrive. After a few days, the BSODs got more frequent. Then one day, I was doing normal stuff on my PC and the Display Driver crashed. Instead of recovering, the PC froze. I forced restart my PC but it got worse. The display of my laptop went black. I connected the laptop to external monitor which detected the display. When I tried to load the windows, it started giving me the Atikmpag.sys BSOD on the start up. Now the operating system works fine in the Safe Mode but with nothing on the laptop's screen. The soultions I have tried so far are.
-Reinstalled the windows thrice
-Removed the drivers and installed the updated ones a bunch of times.
-Rolled back the bios to an earlier version
-Removed the hardrive and tried to load it from an operating system installed on external flash drive
-Tried loading the PC with linux on external flash drive
-Opened the laptop and cleaned it thoroughly
-Removed all the components and plugged them one by one.
-Removed the old Atikmpag.sys in system32 folder and expanded it with the latest ones.
-Installed every thing fresh from HP website
None of these tricks have given me any luck yet. The only way, I could use the operating system in normal mode, is to delete the atikmpag.sys file in safe mode and then log on back in normal mode. I also analysed the minidump file through window debugger and it says that atikmpag.sys is causing this crash with the TDR message. I did all these with an external monitor as the display of the laptop is black since that day.
Below are the detailed specs of my laptop.
OS Name: Microsoft Windows 7 (64 bit) Home Premium
Version: 6.1.7601
System Model: HP Pavilion Dv6 Notebook PC
Processor: Intel Core i7 Q 721 @ 1.60 GHz
Bios Version/Date: Hewlett- Packard F.29, 11/7/2011
Installed Physical Memory (RAM): 6GB
Graphics Card: ATI Mobility Radeon HD 5650 1 GB
I have tried almost every solution available on these forums but still have not gotten any where. I am wondering how could the display, graphics card and hard drive stop working at the same time .
I would really appreciate if someone colud help me through this problem.
Thank you
P.S. Kindly ignore my English mistakes as it is not my first language.

Hi Goloono,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
First I would like to reassure you your English was great, I had no problems understanding you.
I grasp that you are getting a black screen with the error message " Atikmpag.sys".
Here is a link to Troubleshooting Error Messages on a Black Screen that may Occur During Startup or Boot.
Have you run The HP Support Assistant to help with updates and resolving issues.
Here is a link to a Microsoft Community Page with this exact issue. There are some suggestions that may help.
Blue Screen error with atikmpag.sys in Windows 7 .
Here is a link to the HP software and driver page. You will need to input your exact model of DV6 you have and follow the prompts. This page will have the recommended drivers and it will list bios updates. if there are any applicable ones.
HP Drivers & Downloads.
How Do I Find My Model Number or Product Number?
At one point you state you had a hard drive error, to rule that out I would run a diagnostics. SMART Media Test Error Appears when Notebook is Started
Please let me know if this has helped.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Strange issue with external monitor, only working when external speakers plugged in (using Thunderbolt to VGA adaptor)

Hey – I am having a very strange issue with my external monitor; where it only works if my external speakers are plugged in and connected.
I am using a late 2011 Macbook pro, running Mavericks 10.9.4, along with an MBox 2 (USB Audio Interface), and two powered speakers (KRK Rokit 5). This setup has had no issues. I have just acquired an external monitor (Benq T2200HD), which I am using with a thunderbolt to VGA adaptor (a cheap Chinese knockoff adaptor).
To start - I plugged the monitor in with the thunderbolt adaptor, and it powers up and works fine. However, there is a nasty buzz coming from the speakers. I did some research and it looks like a simple ground loop issue. I did a bit of troubleshooting, and this is where things get weird.
What I found is - If I unplug the MBox, the monitor loses signal from the computer (displaying ‘No Signal Detected!’). Further, if I keep the MBox plugged in, however unplug both the cables from the MBox to the speakers, the monitor loses signal. It doesn’t matter if the speakers are turned off, however they need to be plugged in (or the monitor loses signal). Weirder still, I can unplug the MBox, however the monitor will work if I plug in the speakers through my macs headphone jack.
Simply put, the monitor only works if there is a direct connection between the computer, the speakers, and the power source. What is going on here? Is the monitor grounding through the computer port, to the speakers (I don’t know how this works, is this possible?). Could it somehow be the cheap VGA adaptor I am using?
Some other information:
- Everything is plugged into the same multi-box for power. I have tried plugging things into separate sources, and the result is the same.
- If I unplug the thunderbolt adaptor, then the speaker noise disappears straight away.
- The ground noise doesn’t appear in my headphones, which are plugged into the MBox.
Any information would be great – am I missing something here, or is this genuinely weird?

Well, I went back into Best Buy to test on 3 other laptops (2 Asus, and their floor model for this Sony). It seems to be doing the same problem so at least I was able to rule out broken hardware issue on my particular laptop.
Here's what I did to test:
Since I couldn't really install Adobe Premiere on their machines, I used the DVIO software (http://www.carr-engineering.com/dvio.htm) and a 5 min clip I captured. I transferred onto their machines, hooked up my Sony D8, and attempted to play the video. It would play for 15 seconds and then stop and jitter with a loud noise (like it does on my laptop). I even tried changing each machine's firewire driver to the legacy one and same results. I pulled a brand new 4 pin to 4 pin firewire cable off their shelf and still the same problem.
I think I've nailed it down to Win7x64 bit Home Edition not playing nice with Firewire driver. Very annoying. I can't find any concrete evidence of this from other users on any of the forums that have my particular problem, but from my own testing, it's all I can conclude.
I have 2 other things I can try:
1. Opening the laptop and looking at the firewire to maybe find appropriate driver (ugh, I don't want to have to open this thing up).
2. Upgrading to Win7x64bit Pro and possibly testing with XP on the new MS Virtual PC (http://www.microsoft.com/windows/virtual-pc/). I can't do it with my Home edition apparantly.
Who needs to view video on an external TV anyways....sheeesh...(scarcasm).
Tim

Using the MacBook Pro with external Monitor and Keyboard

This may be a dumb question, but here it goes anyway:
Can I use the MacBook Pro with an external monitor and a bluetooth keyboard and mouse without having it opened all of the time ?
I am planning to buy a MacBook for my wife and most of the time she will be using it at her home office.
I don't want her to use the computer opened all of the time when she is actually looking at the separate screen and using a separate keyboard. Having the laptop opened will only accumulate dust and reduce the lifetime of the built in screen.
What I would actually need is a kind of "docking station", but Apple doesn't make that - I know.
So can the MacBook at least be operated without the internal screen powered on while it is closed?
Thanks for your help
Martin
Message was edited by: mdopp

Yes - it's called clamshell mode:
http://support.apple.com/kb/HT3131

Lenovo Helix - Issue outputting to external monitor

I received my Lenovo Helix today and am having issues outputting to an external monitor. During initial setup output was working but with the occasional flicker, so I performed all Windows Updates and Lenovo updates, however now it will not output to external at all. Monitor is a Dell 2740L 1080p monitor using a Kanex MDPHD10ft mini displayport to HDMI cable. Any help would be greatly appreciated.
Lenovo Helix i7 256gb... wish I bought a Surface Pro for better support...

Has anyone found a solution for this issue yet? I was unable to get the Intel HD Graphics driver 9.17.10.2932 or 9.17.10.3071 to work. Sent the computer in to Lenovo; they have replaced the motherboard three times. I'm surprised that each time they sent the computer back, they didn't check to see if they had actually fixed the output problem.
It appears that the problem lies in the Intel HD Graphics 4000 driver (see: http://www.eightforums.com/graphic-cards/7743-those-troubled-hdmi-sync-issues-intel-hd-3000-4000-etc... ).
For a company with a long legacy of sucess, Lenovo has sure disappointed this time. It's going to be hard to recommend their computers to anyone if they can't even acknowledge that they put a nonfunctioning port on their laptops.

GPU acceleration fix for Dell Intel and Nvidia chipsets with external monitor?

I have a Dell XPS laptop with both integrated Intel chips and Nvidia chips and I can only get the GPU acceleration to work when I don't have any external monitors plugged in.
Is there some way I can get Illustrator to enable the Nvidia GPU and stop being confused by multiple chipsets on external monitors? I really like the live zoom.

same problem here,
'm getting a little frustrated trying to get my laptop working with my LG DLP 3D ready projector to display in 3D. The projector itself will work in 3D as long as the resolution is 1024x768@120hz and the laptop's NVidia GTX 770M should have no issues driving the projector with this resolution.
Where it seems like the problems occur is Intel HD 4600 graphics driver gets in the way every time i try to run anything 3D, the software Im using to run any 3D type files do not recognize the projector as a 3D capable device because all the laptop is using is the Intel HD 4600 graphics.
If I could somehow turn off the Intel graphics and just force the laptop to just use the NVidia card I think all my issues will go away. I just am not having success in doing this.
I have tried to go into the NVidia control panel and under 3D settings pick the software program that runs my 3D files and tell it to use the NVidia card...but it never works.
I think everything is sent through the Intel graphics card regardless if the laptop is using the NVidia card (just guessing here)?
I also tried to simply uninstall the drivers but that did not work,
I also tried to disable the Intel graphics but it then went into some type of generic display driver mode and still would not work.
I also went into the BIOS to look for any settings that would allow me to disable the Intel graphics card ..no luck, could not find any settings for this.
Can someone help me with this? how can I disable the Intel graphics and force the laptop to just use the NVidia card all the time?
Thanks!!

MacBook Pro, 10.6.3 hangs after login with external monitor

Howdy:
This is a weird one and if this isn't the correct forum, please let me know.
I have a two year old MBP that I use 99% of the time with a 30" Apple monitor. It has always worked well. Now, if it is attached to the monitor and I log in, the machine just hangs after I put in the password. It does this also in the troubleshooting "blank" account I have. If I shut the machine down and detach the monitor and external drives, it logs me in nicely. (I'm using it now)
I have restarted from the 10.6 install disk and repaired permissions twice. I have reloaded 10.6 and then did the updatede to 10.6.3. I have used Disk Utility and TechToolPro to repair everything and both say all is okay. Still the problem persists. However, when I reloaded 10.6 and updated it, it logged me in with the monitor once and then when I logged out to restart it, it stopped again.
Could it be a problem with 10.6.3 and external monitors? I don't think so as it worked for a while with it before this started.
The only connection I can find is the monitor.
Does anyone have any clue what is going wrong and what I might do to fix it? Thanks

I need to hang my head in shame. The solution, once found was simple and took only seconds and it was merely a software conflict. I should have gotten that one myself but didn't, because, believe it or not, I didn't think the software was running and I simply forgot about it to begin with.
It turns out, I had Intego Software's Virus Barrier on my computer and it was running. I knew I had it, but thought I had disabled it because it was forever throwing a hissy fit every time my Apple TV checked in. Last week, I updated it without thinking. Apparently, that re-enabled it and it was rejecting the internal process change from the machine-wide log-in screen to the account log-in screen.
The point is I should have remembered that I had updated it and I didn't. If I had recalled the change, I would have zeroed in on that before I spent hours at the Genius Bar, befuddling everyone. On the other hand, it was nice to take my 30" monitor for a nice outing.

Lenovo x220 Wifi stops with external monitor

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