LG Monitor entering power saving mode despite thunderbolt connection

I have a full boat 2013 rMBP connected to a LG 34UM95 though thunderbolt and it has been working flawlessly for about 4 months. One connection from the laptop to the monitor and my external drives connected to the monitor. It has been great.
Until today
For whatever reason, my rMBP isn't detecting the monitor. It isn't showing up in preference or apple menu. I know the thunderbolt port is working as the drives are still visible that are connected to the monitor, but I can't run dual display or clamshell mode. I have rebooted several times, both the monitor and laptop.
This *****.
Any suggestions?
The searching I have done has revealed some NVIDIA card issues causing some challenges for others, so I hope it isn't anything like that.

Hey Cult Hero,
Thanks for the question. Based on what you stated, it seems like you are having trouble with an external display. I would recommend that you read this article, it may be able to help you isolate or resolve the issue.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
No video or no signal, image distortion, "snow," or flickering
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 resolution
Start 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.
Thanks for using Apple Support Communities.
Cheers,
Mario

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So…where do I start troubleshooting? Is this a Lenovo docking station issue? Are others having this problem?

hey DougWelsby,
welcome to the forums and for this is hard to say if it is the docking station or is it something else.
is it possible for you to test a different monitor with the docking station or to have test the current monitor of yours directly with the W520 ?
If you can, do reply back with your findings.
At the same time, do hop over to http://support.lenovo.com and crosscheck the download list and ensure all drivers (including bios) is up to date.
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Monitor enters power save mode on start up

PC keeps crashing in game, after it crashes it shows the message DVI power save mode on my monitor. Sometimes it even crashes on boot.
It all started when i tried to update my bios with live update(yes I know wrong choice, after I did this is read all the wrong things about live update on google)
So i flashed my bios with an usb drive to 1.8, but it's still crashing
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Nope, didn't do an oc, sometimes after restarting several times i can run something. Like a game but after some time it freezes and gives a gray screen with 'dvi power saving mode' after that nothing works, no caps/numlock.
I was thinking it was the gpu, so i rma'ed it but when i had it back, it gave the same thing.
I thing it's the board, pci slots or something
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So, my monitor has not been able to turn on for about a week now. It shows that it's getting power, but after 3 seconds I get the message that it is going into power save mode. I am able to press some buttons on the monitor and a message pops up that there is no signal and to try typing or moving the mouse which doesn't work. I've attempted to change the input source which only leads to "No DisplayPort Cable - The display will go into Power Save Mode in 5 minutes.". I have tried a separate monitor which is extremely less powerful and I get the same message that it's entering power save mode. Could this be a fried video card or what's happening here?

Thanks for the reply Chris. I do have both DVI and VGA out ports and I will be testing that today. Not sure if this has anything to do with my issue or not but I might as well mention it. I have 4 2 GB ram sticks which came with my pc. I purchased two new 2 gb ram sticks due to some memory issues I was having. The problem is, the two new ram sticks I had were not the correct size but I attempted to use them anyway. Now prior to inserting these new ram sticks I cleaned my pc using air duster and a light suction vacuum cleaner, not sure if I got all of the dust. Once I found that the ram sticks were not the right size I then reinserted my older ram sticks and this is when the monitor issue occurred. A couple people had mentioned that this sounds like a bad video card, but could inserting wrong ram sticks affect the motherboard and in turn mess with the videocard?
Also, roughly 3 weeks prior to the monitor issue, the lights on the side of my case are generally dark blue (but can not confirm if this is normal as I rarely pay attention to it.) The only reason I bring this up is because the lights began to turn red, then a sortof clear light color progressively throughout the next couple of weeks, eventually not turning on at all. Again, I've never really noticed the lights on my pc to begin with so this could not mean a thing.

Dell 2407 Monitor entering power save mode immediately!!! :(

I have a Dell 24" 2407 Monitor hooked up to my 24" iMac (white 2.16GHz core 2 duo). Problem free for the past couple of years, until recently, my monitor keeps going into power save (when the iMac screen is active.
It's connected via DVI, and the funny thing is, is that the iMac still detects the monitor, but it's in power save mode.
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How about if you open System Preferences Displays pane Display tab... Click on +Gather Windows+ on the display that is working. Then try adjusting things like resolution and +color depth+ on the non-working display to see if that has any effect.
Have you tried disconnecting the power cord on the display for a few minutes and reconnecting it? Does the display have an on-screen menu, and a command to reset the settings on the display to default?
A few more tests, if it still does not work.
Create a new admin user account in System Preferences Accounts pane
http://docs.info.apple.com/article.html?path=Mac/10.5/en/8235.html
Log out and log in to the new account. In the new account, does the display work or not work properly? If it works in the new account, that would indicate some problem in your regular user account.
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Hi,
Update the the video driver from the NVIDIA web site.
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LG Monitor stuck in Power Saving Mode

I just purchased an LG W2252TQ LCD monitor and I am using a mini-dvi to dvi adapter and a DVI cable to connect to the monitor. My macbook detects the monitor, but when I connect it, the monitor enters "Digital Power Saving Mode" and is asleep. No picture whatsoever. - I saw another post who was having similar trouble and he solved it by using a mini-dvi to vga adapter, but I'd prefer to use a digital connection. Any help?

kiamatthews: I bought the same LG monitor for my daughter's MacBook and I couldn't get it to work. Then I read your post and resigned myself to buying the mini-dvi to VGA adapter. Luckily, I stubbornly tried one more time and after a bit of fiddling I finally succeeded in getting it to work. (My daughter has the same setup as you i.e. LG W2252TQ LCD monitor connnected to a MacBook using the mini-dvi to dvi adapter and a dvi cable connected to the monitor.) I'm a relative newbie to Macs, so I'm not sure I've remembered all the steps, but here goes.
When I first connected them, the LG showed the background from the MacBook, but nothing else (no icons, no windows, etc). Eventually I brought up system preferences - displays, and some sort of monitor resolution window appeared on the LG, but it was different than what was on the MacBook. The "displays" window on the MacBook did indicate both the MacBook monitor and the LG, which it showed as 2252TQ or something like that. Anyway, I checked a box labelled "Show displays in menu bar", which then put a monitor icon on the menu bar. When I clicked on that, there was a line allowing me to select "mirror" which I did. Immediately, what was on the MacBook display appeared on the LG. After I picked myself up off the floor, I was able to change the resolution for the LG to its maximum setting and after about 2 seconds of blank screens, it reappeared with everything working as it should.
I hope that the above description is sufficient to get yours to work as well.

Mirroring LG Monitor stuck in Analog Power Saving Mode

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I have used the Switch application to try and fix the issue, and I have also adjusted the resolution many times as it appears my Macbook recognizes the monitor but an image just won't appear on its screen. I just ordered a Male to Male DVI cable and mini DVI to DVI adapter to see if a digital connection would work. Does anyone know if this will work or of another solution to my problem? Thanks.

So I ordered a Mini DVI-DVI Dynex adapter and Male to Male DVI Cable off ebay for very cheap, and to my surprise, this set-up seemed to shake the monitor out of "Analog Power Saving Mode" into "Digital" since its a digital set-up and now I have a fully functioning, mirroring monitor. So I would suggest switching to DVI to correct your issue.

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Hi guys. I have an HP desktop and a Dell SR2320L Monitor. It was working fine until a few months back. I was out of town, came back last week and now every time I start my PC it just stays there "Entering Power Save Mode". I tried almost everything researching a solution for the problem but just won't work. Is there a way to check if the cable is the problem or the monitor or anything else? Any help will be much appreciated. Thank you.
Ankur

Hi Ankur,
Monitor may enter in power saving mode when it does not get the enough power for its operations. If monitor is the cause, you may try to re-seat the monitor cable and ensure the connections are secure. You may also try to swap the ends of cable and check if the issue persists. Another step you may try is to use a good known cable and see if the issue persists. If it does, as a last resort you may try to reset monitor to factory defaults. For more information on this, you may refer to manual of monitor: http://bit.ly/10ErgRX
Another possible cause of the same issue might be video drivers of your computer. You might need to uninstall and re-install the video drivers and may check the power options in operating system. You might need to check the HP website for download and installation of video drivers (relevant to the system model).
Please share the findings.

Using both power saving mode and offline mode caus...

So I am having a very strange problem. I have been using the Situations App (formerly Nokia Situations) to automatically put my phone into offline mode, and power saving mode over night. 9pm to 6:30am.
Recently the phone as started refusing to leave the offline mode in the morning. Even if I try to change the profile manually it says "Unable to change profile". The only way I can get out of offline mode is to reboot.
I uninstalled Situations, and manually put the phone into offline mode and power saving mode. By the morning I had the same issue, stuck in offline mode until reboot. So it's not the App causing the problem. I've tried a soft reset, same problem still.
I also noticed that over-night (from fully charged before 9pm) to 6:30am I used about 70% of my charge. (A combination of power saving mode and offline mode is killing my battery!)
I would have to go to work and immediately put my phone on charge! I.e.. 12 hours of offline + power save has drained my battery almost completely.
Last night I decided to use the Situations App to put the phone into offline mode, BUT NOT activate power save mode.
This morning the phone had virtually full charge and it had no problem returning to online mode. So it's ONLY if I use BOTH power-save and offline. (Tonight I will try using power-saving mode and NOT offline mode to see if it's only the power-saving mode causing the issue!)
If I manually enter offline+power-save mode, and then try to return to on-line/non-power-save mode, relatively quickly, i.e.. Not over-night, everything is fine. It's only over night the problems start!
Any help?
Rob
PS. I also have the problem where using HSPA+ causes my phone to drop from the network and stop being able to receive/make phone calls. But disabling HSPA+ works around this for now, I think this problem is unrelated however.

I have a similar problem. My 808 PureView loses 70% of its charge overnight if I leave it in normal profile without power-saving. To deal with this issue, I started using the situations app to put the phone in power saving mode overnight. That solved the problem (although I never put my phone to offline mode). This is a weird problem because throughout the day my phone doesn't use 70% of charge, but it does overnight while doing nothing!
I have also experienced the second problem, losing cellular and internet connection, on my 808. I have started a thread to deal with this issue.
http://discussions.nokia.com/t5/Nseries-and-Symbian-Smartphones/Nokia-808-PureView-loses-cellular-an...
I believe it is a firmware bug that causes this problem.

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I am not aware of a way to turn that feature off completely since it does not have a front panel.
However, I suspect largely that the issue is with DHCP IP (automatic) settings. Printers in general, with some routers, have issues with DHCP and standby where they no longer communicate using DHCP information.
I recommend setting static IP addresses for any printer on a network as it prevents most network issues with printers from occuring.
Print a network configuration page by holding the network button for 3 seconds and then releasing it. A printout should be printed with the printers IP address.
Once that is done, enter that IP address into the browser on a computer as if you were going to a site. Once that is entered, go to that site and the printer status page should be loaded.
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Click apply and you should get a success message.
At this point, the printer should have a static IP address and the issue of it not responding after entering standby should no longer be present.
PrintDoc's post has similar steps for a wireless version of the same printer. The only step that would really be different is choosing Wired instead of Wireless on the setup page.
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Nokia N8: Possible Power Saving Mode Bug

Dear All,
For the past week, I've change the way I use my Nokia N8. I decided to set it up in power saving mode during the evening. There is no point for it to be on 3.5G if nobody is using it. Unfortunately, I seem to have hit a problem. At the moment, my N8 is using a pay as you go sim card from O2 and this card is in the phone 24/7.
When I activate power saving mode, the phone re-registers with the network and the maximum speed it will have will be EDGE. In the morning, when I take my phone I disable power saving mode and the phone re-registers again with the network.
Having said that, on multiple ocassions, my phone showed some worrying symptoms. For example, a few das ago, when I disabled power saving mode, the phone did not show the 3.5G icon and I could not make any phone calls. The coverage was up and down. You might say that, it did not show 3.5G because you had no 3.5G you idiot. That is not true, where I live, there is 3.5G everywhere.
I was shocked that I could not make any phone calls. After a few reboots and taking SIM card out, I managed to get the phone in working order.
Today, the same thing happened. I managed to fix it just a few moments ago. It seems that the power saving mode option has an implementation problem or O2 does not like the way the N8 registers to the network when you enable and disable the said feature. Has anyone encountered this???

@m80116, this may well be a solution, but could be problematic if in a weak reception area where only Edge is available ? You could lose data connection completely ! I tend to use Dual mode, and generally don't have an issue, but certainly for anyone living and working in a very strong 3 or 3.5G area it may work very well, wish I had the luxury of being able to use 3G Only
If I have helped at all, a click on the White Star is always appreciated :
you can also help others by marking 'accept as solution'

Power saving mode / and broadband disconnecting pe...

I have recently started using the power saving mode and noticed that our BB speed has gone down to 2.4 from 2.9. While I know this is not a big reduction we had a lot of problems earlier in the year with V04 messages cos our speed dropped to around 2 and it took a lot of engineers visits to get it back up to 2.9. Also I noticed that our HH keeps disconnecting (at the moment it says it's been connected for 2 days) although this has been happening since we signed up to BT and not since using the power save mode..
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Thanks
Debbie

Hi the variations in your speed are being caused by the restarts of your hub nothing toowith power saving mode you need to find the causes of thedisconections
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

Power Saving Mode In q10

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