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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-23, 17:11 PM

Andy_7575: You're totally right. To keep it with Lenovo, I announce the birthday late. :smileyindifferent:






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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-23, 17:16 PM

We just ordered 15 licenses for Win 7 Pro and I downloaded it last night from MS.

Might end up rolling along with 64 bit Win 7, disable the switchable as they don't have a driver for it and go with straight up discrete ATI and call it a day. Then maybe I can get some real work done, and switch between machines on my KVM without chaos (like it used to be!!)



My transition from T61 to T500 was and still is a complete waste of my time. Never had to wait over a year for working drivers. These things are not the good ol IBM ThinkPad's of years past, not even close....

T430s (current), T420s, ThinkStation S20

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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-23, 17:36 PM

One thing I should probably mention, I've been out of town a lot lately, so I didn't have a chance to test Windows 7 with my DVI monitor until last week.  When I did test it, I discovered that for some reason Windows 7 loses the dual monitor display configuration between every dock/undock cycle.  I still think the upgrade is worth it from an OS perspective, but not from a fixing display issues perspective.


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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-23, 23:34 PM

Best call I made was to give up on it and do a clean install with latest catalyst drivers using Mobility Modder and run in "Discrete" mode.

When I am in the field and require extended battery life I just reboot the machine enter BIOS and change to “Integrated”.

Since doing this my machine has never BSOD’d and is running strong.

I have just completed a week of testing with Windows 7 Ultimate x64 RTM using Catalyst drivers and have not had any issues so migrating across this weekend.


Still have outstanding BIOS bug resulting in boot issues with Advanced Dock 250310U requiring hot dock when I see the Lenovo splash enter BIOS then exit otherwise it doesn’t boot and poor Bluetooth range when lid is closed but I have learned to live with this :(


I will have my spare test hard drive waiting should Lenovo release Win7 switchable drivers that work but not holding my breath.


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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-27, 0:20 AM

I had this problem on my T500 machine until I disabled the ATI card in the bios. I have the latest bios and drivers, tried not using aero etc. By the way I am not using an external monitor and it still did it. It hasn't been discussed much, but I think this could be a hardware problem relating to the video chip overheating. It behaves like a video card I tried in a media center machine I built with a small stereo receiver type cabinet. I choose a chip without a cooling fan so the system would be quiet.  I had to I installed additional cabinet fans and ventilation holes to stop the chip from over heating and locking up. This could explain why there apparently aren't any soft ware drivers that solve the problem.  Increased performance equals increased heat.


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Munich, Germany

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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-27, 23:58 PM

Have you guys noticed there are Switchable GPU drivers for Win7 out now? Check the "Win7BETA" page. They are called "AMD M8x switchable". The ATI part is even quite new, it seems. Working for me using win7 PM 2.43 (old, but i did not dare to try 3.01a on Win7 as someone reported it not working with switchable graphics).


Unfortunately, i cannot test your issues as i have no external monitor / docking station. But you guys should really test the Win7 drivers in any case!

Thinkpad T400 (Windows 7 Ultimate x64)

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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-30, 20:53 PM

I've tested the new Win7Beta-drivers, and the issue reproduces itself, quite easily.


However, i found that I only every experienced the problem while scrolling on the trackpoint-buttons (the top ones). So i uninstalled the UltraNav drivers from my Win7RTM 64-bit - W500 - 4063 and since then, the issue hasn't been seen. Same thing on a colleagues machine.


So i guess we're now just waiting for new UltraNav drivers and will have to cope with the ridiculous built-in scrolling interface and not being able to disable the trackpad from within Windows, on-demand.


Anyways, just wanted to share that with you guys. Let me know if this helps anyone and spread the word :)


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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-09-30, 20:59 PM

So check this out.


I installed my volume license copy of Win7 Pro 64 bit last week. Everything working like a champ. Minimal drivers from the lenovo Win7 drivers page. only silly stuff for the memory card reader, etc.


I had originally left the video alone and let Windows figure it out. Then when I switched between machines there were no video flickers/problems whatsoever.


So today I got the bright idea to add the ATI & switchable drivers from the lenovo Win7 drivers site.

Well it worked pretty good, although I did get one screen flicker when switching to a different PC on my KVM and one flicker when switching back to the T500. But not 3 screen flashes like on Vista.


So, I formatted my Win 7 drive and will reinstall it again just like i did last week, but this time NO ATI FROM LENOVO, no matter what!!!!!!!

T430s (current), T420s, ThinkStation S20

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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-10-01, 8:11 AM

The link on the Windws 7 beta drivers page was renamed "ThinkPad Switchable Graphics Driver".

USB-C: Just cos it fits don't mean it works.
I don't work for Lenovo. I'm a crazy volunteer!

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Re: R400/T400/T500/W500: display driver "amdkmdap" crashes

2009-10-01, 10:34 AM

Lo and behold these drivers appear to have restored switchable graphics on my T400.


At first I did the dummy upgrade which entailed copying new drivers over bad ones.. No love.


Then I woke up a half inch smarter this morning and used the packaged to uninstall my previous drivers.. and rebooted- the system still had some ATI remnants in it so I uninstalled again and rebooted.  I then had a 1024x768 standard VGA view (a sign that MS drivers had taken over)..  I installed the fresh package from the previous link and although I was not at 1440x900 and system Manager saw the card correctly I rebooted anyway and changed my settings in BIOS back to Switchable and OS detection ON.


The resulting reboot with those settings has been fruitful.  I can now switch between graphic cards as expected.


The driver appears as:  ATI Technologies Inc  8/24/2009  v8.641.1.0  Microsoft Windows Hardware Compatibility Publisher


I see both the Intel graphics and the ATI and my power mamanger allows me to switch back and forth.  I dont dock my laptop so I can't test its functionality or confirm those glitches.


After being locked in discreet mode for so long I forgot why I wanted to be able to switch back and forth anyway..


Oh yeah, battery life.. I knew there was a reason for having that huge thing sticking out the back of my beautiful laptop.  ;)


I hope everyone else has positive experiences.


I'll try to load up a 3D game today and test for crashing.. Fallout 3 should bring it to its knees I think.  ;)

Thinkpad T400 IC2D T9400 2.53Ghz (2765-T2U)4Gb RAM 320Gb Hard Drive
Discreet Graphics - 1400x900
Windows 7 Enterprise 32Bit
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