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ColonelONeill
Posts: 6,529
Registered: ‎12-26-2009
Location: Toronto
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

@sundaram,
Are you running in Optimus mode? You can only drive three in Optimus mode.

Also try updating your driver.
W520: i7-2720QM, Q2000M at 1090/695/1390, 22GB RAM, 500GB HDD, FHD screen
TPT1: 1839-23U, stock ICS
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
What's DOS?
sundaram
Posts: 2
Registered: ‎08-19-2011
Location: Maryland
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

Thanks for the advice.

 

Questions:

1. How do I confirm whether my W520 is capable of running in Optimus mode?

2. How do I confirm whether my W520 is already running in Optimus mode?

3. How do I turn on/off Optimus mode?

 

Lots of online info describing what Nvidia Optimus mode is and how it works.

I have yet to come across something that answers my questions above.

 

Thanks in advance.

Punch Card
Commander
Posts: 25
Registered: ‎07-18-2008
Location: Solar System/Earth
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

I believe it is not possible. If you are docked, your machine is optimus disabled = two monitors max. It is a limitation of many nVidias. You should go ATI if you want more monitors (Precisions with eyefinity can have 3 digital, 1 VGA and 1 interna screen). How cool is that :smileyhappy:
Lenovo W520 | 15.6" HD+ | Intel i7 2720QM | 16 GB DDR3 | nVidia Quadro 1000M | Intel 510 SSD | Hitachi 7200rpm HDD | Lenovo Mini Dock 3 Plus

Bit Torrent
ThorsHammer
Posts: 2,400
Registered: ‎04-08-2011
Location: USA
0

Re: W520 - why only two external monitors? Anyone from Lenovo?


sundaram wrote:

Thanks for the advice.

 

Questions:

1. How do I confirm whether my W520 is capable of running in Optimus mode?

2. How do I confirm whether my W520 is already running in Optimus mode?

3. How do I turn on/off Optimus mode?

 

Lots of online info describing what Nvidia Optimus mode is and how it works.

I have yet to come across something that answers my questions above.

 

Thanks in advance.


1. In the BIOS, the Display setting includes an Optimus setting.

2. If the BIOS is set to Optimus and you see the Intel chipset in the Windows 7 display properties, it's Optimus.

3. You cna turn it off in the BIOS

Paper Tape
jayce996
Posts: 3
Registered: ‎08-25-2011
Location: France
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

Hi Everyone,

 

i've search through the internet a solution without finding it.

to what i've read the W520 is able to drive 2 monitors and its screen.

 

I'm not able to make it running, can you help me please.

my W520 is powered with the Quadro 1000M, my 2 external screens are plugged with the DVI connectors

with the NVIDIA interface i'm able to have 2 displays (internal + 1 external), but i have "this GPU supports up to 2 displays" when i try to connect the third one.

 

with the other one (don't remember its name) i can even not have 2 screens !!!

my driver version is 275.54

my 2 screens are DELL 1908FP (1280*1024)

i've the dock with the 170 power unit

 

i've tried quite all possibilities in the BIOS, and i don't know what to do, please help me :-(

 

Core Memory
Dan_Falk
Posts: 19
Registered: ‎04-10-2011
Location: Pennsylvania
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

Hi, Jayce,

I have a similar configuration to yours. I am natively running two external monitors plus the laptop monitor. In truth, I run a third external monitor using a Displaylink driver device, for four total.

I had no need to fiddle with the BIOS settings to do this. My O/S is Windows 7 Pro, btw.

The main beef I have with Lenovo over the W520 is that it is not possible to drive 3 or 4 External monitors natively (well, using the docking station anyway) as IS possible with the T520. I've yet to get a technical explanation from Lenovo about this.

So, now that you know it IS possible to drive 2 externals and the notebook screen, we can compare settings if you like.

Regards, Dan
Bit Torrent
ThorsHammer
Posts: 2,400
Registered: ‎04-08-2011
Location: USA
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

The supported monitor configurations are documented at http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-76617

 

If you are unable to achieve 2 external monitors plus the W520 LCD panel, then you don't have the proper drivers installed or something is mis-configured. Most likely the later.

 

You do not need a third party product for two external monitors and the W520 LCD panel.  You don't even need the Lenovo dock.

Token Ring
wolfindersteppe
Posts: 206
Registered: ‎06-25-2011
Location: Vienna
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

I have just found this document ThinkPad Multiple Configuration and it is clearly written that W520 can run with 4 monitors configuration with the Mini Dock Series 3 model 4337! Unfortunately I have purchased the more expensive Mini Dock Series 3 model 4338 believing that double the number of ports will allow me to run 4 monitors configuration. If it is not about the documentation error, I will try to contact Lenovo and see if I could get the replacement of model 4338 for model 4337.

ThinkPad W520, i7-2820 CPU, 32GB RAM, NVidia Quadro 2000M 2GB GPU , mSATA Samsung Evo 840 1TB + 2x Samsung SSD Evo 840 1TB & Lenovo Helix i7 8GB RAM & ThinkPad W540, i7-4800MQ, 32 GB RAM, NVidia Quador K1100M, OS on M.2 2240 Transcend MTS400 256GB + 2x Samsung SSD Evo 840 1TB
Core Memory
Dan_Falk
Posts: 19
Registered: ‎04-10-2011
Location: Pennsylvania
0

4337 vs. 4338

Hi,

 

   Thanks for bringing this to my attention. I reviewed the technical brief. I'm guessing that the brief is in error, as much as I wish it isn't. Please let me know if you do get the 4337. I will be very suprised and delighted if you can drive 4 monitors with the W520 in that setup.

Bit Torrent
ThorsHammer
Posts: 2,400
Registered: ‎04-08-2011
Location: USA
0

Re: W520 - why only two external monitors? Anyone from Lenovo?

[ Edited ]

The W520 won't run in the 90W 4337 dock.  The stupid PDF is in error.

 

Lenovo, get your act together.