10-06-2009 01:11 AM
I installed ThinkPad Switchable Graphics Driver for Windows 7 (64-bit and 32-bit) to my ThinkPad W500 running Windows 7 Ultimate RTM (x64).
When I enable Intel GM45 (Energy Saving Graphics), collapsed screen has been displayed.
This problem occurs only 6GB RAM (2GB+4GB) Installed. 4GB (2GB+2GB) is normal.
I don't have two 4GB Memory Modules so I can't test in 8GB installed system
Solved! Go to Solution.
10-06-2009 07:24 AM
I've had the same problem running on just the Intel GM45 chipset as well with Windows 7. Currently running on a T500 with a 1GB+2GB RAM scenario and ended up changing to using only discrete exactly because of this problem.
If anyone can provide a solution it would be helpful.
10-06-2009 09:31 AM
It is a bug in the driver. If you have non matching size memory then this will happen. Will have to stick with ATi graphics until the official windows 7 driver is released.
10-27-2009 06:50 AM
I still have got this problem with WIndows 7 Pro RTM x86, and the switchable driver version 8.641.1.1000 (via System update).
Has anyone got a solution for this?
11-07-2009 07:46 PM
The Vista drivers seem more stable. Pain in the nose though...shows bad engineering on Intel's part. I'm going to the computer store to buy a 2 GB stick of DDR3 1066MHz RAM so that I have 2 x 2 GB of RAM.
I'm thankful for this forum, though. Had it not been for the OP's post, I'd still be in the dark. Is there a thread or a link that I can navigate to where I can find more info about this asymmetric memory issue with the Intel GM45 graphics?
11-08-2009 01:56 PM
OK. I've replaced my 1GB DDR3 1066 MHz RAM stick with a 2 GB stick and now have 2 x 2 GB RAM. The screen "collapse" has gone away. I'm both happy and sad that it worked. Happy, because I now have a great looking screen again, sad because of Intel's crappy engineering.
11-09-2009 11:40 AM - edited 11-10-2009 12:48 AM
Thanks ES for testing it. So we can be sure that this is an Engineering / Bios / Driver Problem that should be solved by lenovo right now.
If there are some more people having this Problem, please answer here!
11-10-2009 07:38 PM
Again, Thanks ES. Would have been looking around all over the place for a solution if it weren't for the people on the forum.
12-27-2009 03:47 AM
I had this same issue on my x200 with (obviously) non-matching 3GB of total memory. I was able to work-around by disabling Intel VT-D in the BIOS.
These drivers are a mess - It's shocking this is still a problem.