T500 with 2 monitors?

[DirkHo]

Hi all,

I have a T500 that is in use with a docking station and 2 graphic adapters:

- ATI Mobility Radeon HD 3650 (Driver: 8.752.4.0 -> Provider: ATI Technologies Inc. )

- Mobile Intel(R) 4 Series Express Chipset Family (Driver: 8.752.4.0 -> Provider: ATI Technologies Inc.???)

Now I want to run my system with the laptop monitor and additional two monitors. But it doesn't work anymore until I've reinstalled my operating system (Win 7 64 bit).

I'm only able to use the laptop monitor and one additional. Am I using the wrong drivers? Perhaps the given driver for my Mobile Intel... from ATI Technologies Inc. is the wrong one?! I just wondered when I saw it's provided by ATI.

By the way: When I installed the ATI driver software I only installed the driver, but not the control center because I had problemsn with multi-monitoring when I used control center before I reinstalled my system.

Hopefully you can help me.

Thanks and best wishes,

Dirk

[ColonelONeill]

IIRC, the T500 can only drive a total of two monitors, which can be two external ones, or one external + the laptop one.

[DirkHo]

Hi  ColonelONeill,

thanks for your response.

I'm sorry to correct you, but T500 can handle 3 monitors (2 external (hdmi and dvi interface) + laptop), I had this case running for a while until I updated my RAM to 4 GB and switched from Win 7 32 bit to Win 7 64 bit. Now I don't get it to work anymore. I think it depends from the used drivers (versions).

A college of mine has this configuration run with 8.641.1.1000 (Radeon 3650) and 8.15.10.2202 (Intel video device), but I don't find the drivers in this version anymore.

Perhaps you anyone knows where to find them?!

Thanks and best regards,

Dirk

[ColonelONeill]

My bad; my memory is pretty faulty.

When it worked, were you switched to the ATI or Intel adapter?

[DirkHo]

You mean, which video device was connected to the external monitors? I think it were both: One on the Intel, one on the ATI device but I'm not sure and I think this is the problem at the moment, that one of the drivers doesn't allow two video devices to work. But I'm not sure.

How can I find out which video device is just in use with the one external monitor I work with? You have an idea? I fear to disable one of them in windows control so that I don't see anything anymore and cannot reactivate it - I hope you understand what I mean. My english is very confuse

Thanks and best wishes,

Dirk

[ColonelONeill]

Strange...

Usually, Windows uses the ATI exclusive-or the Intel adapter, but not both at the same time...

You can find the older 8.641.1.1-090824a-089811C drivers at the bottom of the switchable driver page:
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-73641

This one does have the resume from standby issue where both cards do indeed activate. Out of curiosity, did your T500 run hotter than expected?

[DirkHo]

Thanks for that link, but I don't get the drivers in that version installed anyway. I uninstalled everything from ATI, I even uninstalled the video device in the device manager. But after downloading and installing the drivers you posted I still see the "8.752.4.0" driver version in the device manager.

No idea what I'm doing wrong At the moment I even can only work on my t500s monitor because the second external monitor is not found anymore, too I'll have to check out what this depends on later.

Thanks and best wishes,

Dirk