Lenovo T400 / T500 :: Display Port Blinks Off When Connected To Hdmi
Jan 22, 2015
I bought this computer which is running 7win64 to update my T60 which I use with my home TV, a samsung digital running at 1360x768 resolution. The computer's native resolution is 1920x1080. I bought an hdmi adapter for the displayport from lenovo when I ordered the computer. Initially, the display works and at first it ran long enough to get everything set for a nice crisp display that fits the screen perfectly. The sound is there too, and is passed on to my receiver by the TV. Very nice. But then it begins to blink off until it doesn't work at all (the sound is cut off too). Lately it won't stay on long enough to review settings.
All updates are in place, both from microsoft and from lenovo. This has Intel 4600 graphics built in, and intel has graphics drivers available, but won't install them because of the lenovo supplied drivers.
I can't get any support from lenovo support because another device is involved.
I read online of some early users who had this problem with a docking station and i guess the problem was resolved with an updated driver.
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Feb 19, 2010
I have recently bought a T400. At the moment, it is running on Windows XP, Service Pack 3.
After installation of Windows XP, I have installed all the relevant drivers and no yellow question marks appear in the Device Manager panel. However, during the process of installing these drivers, now whenever I plug in our take out the AC Power Plug, the screen goes blank for about a second and then comes back.
This problem was NOT there immediately after installing Windows XP and Service Pack 3, i.e. before installing the drivers. I think that it is one particular driver which may have caused this.
I have already tried re-installing the Graphic Driver.
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Sep 7, 2010
I was watching a film on my projector, from my Lenovo T510 laptop, using a Display Port to HDMI cable. There was a thunderstorm and a powercut during the film, but my laptop wasnt plugged in at the time. Then when I touched the Display port end of the cable, which is plugged in to my laptop, it was too hot to touch, and had was slightly bulging and mis shapen! Now it has cooled down and just looks and feels normal. Very strange, and I dont see how it could have been related to the storm and powercut, but it seems a bit too coincidental! I have used this cable multiple times before and never noticed this, but then again maybe I wouldnt have ever touched it until it had cooled down. But I it was pretty much metling it was so hot, so I would think Id notice it.
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Sep 17, 2013
I have a brand new TV with USB, RS232, HDMI connections and of course with a screen in16:9 aspect ratio. I want to use my existing RS232 cable to connect my T430 to the TV and display videos/movies that I want to view with others. HOWEVER, the video output always gets a black bar top and bottom from the T430 when the TV is connected. As a result, the image is stretched side-to-side both on the TV and on the T430 simultaneously showing the video. It is ugly. If I watch a movie in the very wide movie format 2.35:1, the bars are of course even larger and the movie is simply unwatchable it's so thin, top-to-bottom.
This is true regardless of the video source on the T430, either a movie via VLC or MediaPlayer off the hard drive, or streaming.
Two odd things: it does not happen if I play a movie on the TV directly from a USB key - it has a USB port and that works just fine. Also, if I simply unplug the RS232 from the TV then everything gets restored and the image on the T430 is perfect without any bars top and bottom.
In summary, a 16:9 video source connected to a 16:9 TV via RS232 is given black bars top and bottom, and there is no control on the TV that can correct this (TV has two settings for RS232 display, 4:3 and 16:9. 4:3 actually displays the 16:9 ratio correctly, but with a large black frame around it. And 16:9, the "auto" setting, gives the problem above).
So I have two questions:
1. Is there a setting on the T430 that I can adjust to resolve this issue so that the black bars are suppressed for 16:9 video replay?
2. If I switch to using the more expensive T430 minidisplay output (via an HDMI adapter) and connect that way, is it likely to fix this issue? I don't want to go to the expense of the adapter and HDMI cable if it will give essentially the same result.
This only applies to videos. That is, when I close down the video, the 16:9 desktop that shows on the TV is identical to that on the T430 and aspect ratio is not squished on either display.
So it's something to do with how the machine sends out the video streams via RS232 that's screwed up somehow.
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Feb 3, 2014
I wanted to go today and get an adapter for my Lenovo Thinkpad T430 and first I thought I should do some research. This is how I found out that most of the Thinkpads do not send audio over DP, as I would have expected.
I have the T430 (no discrete graphics, just the integrated one) and Mini Dock Series 3 with USB 3.0 (EU1) docking station. The laptop has mini-DP and the docking has a normal DP. The normal DP works fine with my monitor, but it doesn't have any speakers in it , so can't test the audio part.
I checked in Audio properties in Windows (7 x64) and I don't see the video card there, so I am assuming it is not supported. I don't want to buy adapters if the laptop is unable to send audio over a DP-> HDMI adapter.
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Aug 5, 2013
After using for about 12 months my Lenovo T430 2349-GRS without problems, the fan started working loudly all the time I have turned on the PC (all working day from Monday to Friday, T430 connected to the powersupply/charger).
I used the tool HWINFO64 to monitor the temperature and fan speed and realized that the motherboard temperature is working continuously all day above 65°C, and the fan speed is above 3800rpm, so it becomes very noisy.
Then I realized that if I unplug the power supply from the T430, in a few seconds the noise goes, and the computer become silent again.
Below is the image with HWINFO64 log results, in green you will see the T430 with the power supply UNPLUGGED, and in yellow when I connected the power supply.
In the last column of the image, you will see the fan speed in RPMs.
Is there any way to solve this? The fan is very noise above 3800rpm.
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Nov 7, 2013
When I connect my external monitor (ASUS PA248) to my W520, the audio disappears. When I disconnect it, the audio returns. This seems a bizarre link between audio and video, but there it is. Note that the PA248 does NOT have built-in speakers.
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Nov 8, 2014
New ThinkPad T440p and the first issue I encountered is there is no option to disable the touchpad when an external mouse is detected. I don't want to do it via the bios or some other hack as I use the touchpad when it is not convenient to use an external mouse. So it should be able to do the switching as needed, this is a simple feature that other manufacturers have had for years and years.
I already upgrade the UltraNav Driver to the latest v18.0.7.57 and that didn’t present a solution. I am running Windows 7 SP1 - 64bit.
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May 31, 2014
My LAN port seems to be unstable. I insert the cable and hear the clicking sound but no LED turns on. I have to push the cable further to get the indicator on. It may also disconnect if the cable moves.
Is this a faulty port? And, if so, what does it take to fix it? (i.e. what do they replace/fix?)
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May 4, 2014
Bought a refurb T400 and installed a PNY SSD in it. It POST's okay and I can access bios. I can also read/install Linux from DVD just fine.
Trouble is when I insert my win7 home premium DVD into the drive and boot it, I get POST and then I get a black screen. It seems to be reading the drive and when I interrupt with the Esc key or open the DVD drive, I get a Windows menu explaining that the installation has been interrupted.
I've looked at the bios options and can't see anything obvious that should be changed.
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May 26, 2011
I bought a Roline DP to HDMI cable hoping to be able to watch HD content in my livingroom and not having to plug an extra audio cable as DP should carry sound too.
When I do the same as on the youtube video, I get the following settings in the control panels: [URL] ....
But there's no sound coming out of the TV. I've tried it on my SyncMaster PC/TV Screen and on my Samsung TV in the living room. On the TV in the living room, the windows audio manager shows the device, but it cannot be selected as show above. It stays grey.
I've got a T420s with discrete nVidia Optimus graphics (Quadro NVS4200M). Driver version is 1.2.19.0 for nVidia HD-Audio and 8.17.12.6696 for NVS 4200M. This information comes from the device manager. I installed my system from scratch and used ThinkVantage System Update 4.
Where the problem comes from? I could only imagine that the cable isn't capable of carrying audio, but that seems rather illogic, does it?
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Sep 29, 2014
My problem is that when I'm connected with the t540p to the ultradock that this sound comes from the local speakers instead of through the HDMI cable though the monitor and then through my external speaker which are way better.
In the Sound playback devices I have written: "High definietyion Audio Device Not plugged in".
So I tried connecting directly via laptops mindpoit to the monitor and then it worked. But as soon as I connected it to the docking station which is also connected to the same monitor via DVI plug then it results as Not plugged in.
So I tried upgrading the dock station firmware by downloading the fwdphb03 latest firmware, and this does not launch despite being connected to the docking station and using an external monitor and properly plugged in.
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Dec 16, 2014
When I connect second display via regular VGA cable I can set the maximum resolution to 1920x1080, although native resolution for my external screen is 1920x1200.
I could just find posts related to similar problems when using docking station - tried some of the solutions, but none seemed to work.
Found this [URL] ... on dpreview - suggests using miniDP to DP 2-link converter (screen has just VGA/DP ports).
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Jun 23, 2014
I got T510. The display went out and all I can see is flickering screen so I cannot see anything. I am getting T540p. What is the best way for me to move data from my hard drive to the new one? At least I would like to move pictures and documents, I got no backup.
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Jul 26, 2013
Using the projector setting, I'm noticing a slight lag when I open/close any of the applications (ie: there is a momentary pause before the window either appears/disappears).
The external monitor is a Samsung Central Station (1920x1080) and connects to the laptop wirelessly via a USB/UWB dongle.
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Nov 20, 2014
I just bought a Lenovo ThikpPad T540p as a replacement of my old Lenovo ThinkPad R61i.What i'm looking for, is to turn off the internal Display if Windows 7 is locked. On my old R61i, it was the Hotkey FN + F3. I was easy able to changing the function of F3 in the "Energy Manager 6" on the R61i.I did not found any similar option on the new T540p.Because i use is very often when i run the laptop during the night and i sleep in the same room. Then i usually lock Windows an turn off the display.
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Jun 30, 2012
I have a 3-yr old Thinkpad T500 laptop w/ XP. My on-screen volume and brightness displays have recently disappeared. Spoke with customer support and was advised to download all the machine updates....did that, but still not working.
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Dec 24, 2014
I tried to do fn + f7 to toggle display modes as I want only laptop or monitor display, not both. But when I do fn + f7, the small window pop up ask me if I want to turn on caret browsing or not. How to toggle display modes between laptop or monitor for t440p, window 8.1?
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Jul 24, 2013
My T530 (a month old) is driving me crazy with this issue: Depending on which application is in the foreground, it will dim/undim the built-in screen (1600x900 version). I have turned off adaptive screen brightness in the power options, and I've turned off Film Mode Detection and Adaptive Contrast Enhancement in the Intel Graphics and Media Control Panel, but this "feature" won't go away.
How in the world can I get the screen to be on 100% brightness, unless I manually change it?
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Oct 30, 2014
Windows 8.1, 64bit, all drivers up to date, Nvidia 730m, intel 4600. Fairly new issue (couple of months), laptop wakes from sleep but display does not function, everything seems to be working normally during, just no display. Forced to hard restart.
Just avoiding using sleep mode for now. Seems to be a software issue, upgraded to 8.1 when purchased almost a year ago, worked fine until recently.
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Oct 13, 2013
I am trying to install the latest Intel HD Graphics driver but I always get the message that my system doesn't meet the minimum requirements... [URL]
I have a T430s.
Here is a screenshot of my dxdiag:
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Jan 25, 2015
I have a T420 Thinkpad and have 2 external monitors connected; one using VGA into the docking station and one using DVI into the docking station. The laptop does not recognize the mobile PC display as an option when I attempt to extend to a 3rd monitor. The ultimate goal is 3 monitors extended: 2 external and 1 (the laptop display). Is this possible?
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Jan 31, 2015
When i turn on the laptop, display doesn't turn on even when external monitor connected via VGA/HDMI.. I hear CPU Fan sound, keyboard lights on, power light on.
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Sep 7, 2012
My T400 display works at BIOS startup but goes black was soon as Windows 7 starts to load.. Video out put works and I can see an UN Backlit image on the display. Is there some sort back light controller /driver that may be broken.
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Jan 8, 2009
I just ordered an M4400 from the outlet, and in the Accessories page during the order there was no option to buy a DisplayPort to XXX Adapter for $15 like there is when you are buying a new one...
I figured it wouldn't be a big deal to find one after the fact, but now that I'm looking the only DisplayPort to HDMI Adapter Dell has to order is $59.99 !! Any ideas one where to get one closer to $15?
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Oct 20, 2014
I have a g7-2246nr laptop with an AMD Radeon HD 7520 discrete class graphics card. The processor is an AMD A6-4400M. I am running WIndows 8.1 64 bit.
I would like to record video from a DSLR's HDMI output to the laptop. Does the laptop support this?
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Jan 7, 2015
I bought a new lenovo Z50-70 this month. Is is having i5 processor, 1tb hdd, 4gb ram. I really like this lappy but i am dissatisfied with the display. It is having a full hd display but it is blinking only when running on battery.I also dont know whether others facing the same issue or not.
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Aug 5, 2009
http://search.dell.ie/1/2/2036-dell-...apter-kit.html
So with this I should be able to output video to my TV right? Does it have audio included?
Has anyone tested this? Any links to cheaper versions then the Dell adapter?
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Jun 10, 2014
I got a HP laptop, running windows 7 x64 bit Ultimate, and has 8 GB of ram. My tv is crappy now, and want to play my ps3, so, i was wondering if i can plug into my Laptop and get a certain driver that makes the HDMI port act as a input so i can play through my laptop screen, my resolution can go a little over 720p .....
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Dec 26, 2014
I recently purchased a Lenovo ... so I was trying to get some games running on my big screen with my lenovo y50 laptop which I should have set to always use the 860m dedicated card. But when I'm running a second display it defaults to using the Intel 4600 chip, obviously not great for running games. I've tried looking every where in the Nvidia control panel and Intels control panel but can't find anything to fix this issue. That HDMI port is the only display port on the laptop as well.
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