Ideapad Y550P External VGA monitor flashes [ Edited ]

[capital]

Hi Guys,

I just got the Ideapad Y550P.I am facing problems when i plug in an external monitor to the VGA port.

When plugged in, the external monitor receives signal but flashes on and off (2 second intervals)

Tested with four monitors using different VGA cables and a Sony Bravia LCD (got worse on this one).

Windows 7 Home 64 bit Model: 3241

MO:***********

Updated the Nvidia display driver to NVIDIA 8.16.11.8990

Generic pnp MONITOR hardware ID= LGD0230

Any help will be greatly appreciated

serial numbers removed!

[yigit]

you should plug the cable before turning on your devices.

also press fn + f3 and select the one suits for you.

[capital]

Turned off all the external monitors and the Bravia TV , plugged it in . Selected the prefered mode fn+f3.

Nothing changed

[yigit]

tried to update graphic drivers?

[capital]

Updated drivers the first thing before posting

For some reason i feel it is related to this topic:

http://forums.lenovo.com/t5/IdeaPad-Y-U-B-and-Z-series/Y430-screen-flashing-flickers/m-p/105996#M888...

But for me its not the ideapads display its only to do with the external VGA connection

[capital]

Hi Guys i stumbled accross this..looks like some one else had similar problems in another forum

http://www.sevenforums.com/graphic-cards/75980-external-monitor-flickering.html

Tried doing what was suggested, changing the refresh rates etc.. same issue

[yigit]

can you try hdmi output instead of vga?

by the way, did you update your drivers from lenovo? if yes, please try to update from nvidia

change the display settings also change the color depth and then test 
http://windows.microsoft.com/en-us/windows7/Getting-the-best-display-on-your-monitor

correct monitor flicker (refresh rate)
http://windows.microsoft.com/en-US/windows7/Correct-monitor-flicker-refresh-rate

try using the display quality troubleshooter to fix the problem. it makes sure that your video card driver is compatible with windows 7, and checks to see whether your color calibration, video effects, and display settings are correct.
http://windows.microsoft.com/en-US/windows7/Open-the-Display-Quality-troubleshooter

[capital]

1. I updated drivers from NVIDIA directly. 

NVIDIA GeForce GT 240M

258.96

Your PC currently has the latest driver installed for your GPU. No driver update is necessary at this time.

2. I had already tried changing display from the (recommended) to 1024 x 780 and others... and clour depth from 32bit to 16bit but no change

3. Lowered refresh rate value from 75 to 60 but it started to flash even faster.

4. The display quality troubleshooter only asked me to change appearance for 'best performance' which i did but it didn't help at all

5. I am now going to the shops to  get a HDMI to VGA cable and test it out.

I am even testing with an IBM L191p display, i thought out of all brands it would be compatible with the lenovo ...

Its working pefectly with my Toshiba pavillon laptop runing windows 7pro 32-bit. So its not the external monitor.

[capital]

Just an update.

Since the IBM monitor has a DVI port I got an HDM to DVI adapter. ITs pretty bulky  and its in the wrong corner of my notebook (uncomfy) but it worked.

Now does that mean the AVI port is broken ? Cause the other monitors do not have DVI option so i will still will end up using the AVI port .

[yigit]

possible that avi port is broken or you may need just an update or fix.

by the way, which version of bios are you using?