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9644 Posts

12-27-2009

Canada

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-29, 2:30 AM
I managed to get the new ATI driver installed AND have brightness keys work on both graphics cards. I posted my method a few posts/pages back, but even when I retried those steps after pulling a system image restore, I can't get it to work properly again.

The release notes for 10.10 still say ATI-Intel hybrids aren't supported in this release, but evidently they kinda get along okay. I think I get a slight bit of a performance boost on the new ATI drivers with the discrete, but I can't be objective.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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3 Posts

09-13-2009

United States of America

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-29, 3:25 AM

Can you re-run your Windows Experience Index to measure the graphics performance?  See if it improves any. 

T400 2764-CTO, T9600 @ 2.8 GHz
4GB memory, ATI Radeon HD 3400
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9644 Posts

12-27-2009

Canada

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-29, 3:33 AM
The WEI isn't too great for measuring performance, but here's what mines did:

Got it from factory: 4.6
Somewhere along the way, a Lenovo driver update: 4.7
Some other driver update or adding 2GB of RAM: 4.8

Catalyst 10.10 doesn't seem to have changed the performance.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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13 Posts

01-26-2010

Czech Republic

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-30, 11:40 AM

i successfully installed  10.10 driver and power went down, but i cant change brightness at ati graphics as somebody before me, some resolution?

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26 Posts

05-28-2009

Germany

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-30, 11:47 AM

No, it definitely doesn't work!

We must wait for a driver from lenovo.

I hope they will provide it soon ... :smileyindifferent:

 

With best regards,

sonny

ThinkPad T480 (20L6S01V00)
ThinkPad T440p (20AW-S02800) | ThinkPad T400 (2767-2MG) | ThinkPad T60 (2007-63G)
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43 Posts

01-17-2009

Slovenia

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-30, 13:32 PM

You can change brightnes via Ati CCC --> Desktop properties -> Color

 

Any graphics glitches with new driver?

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15 Posts

09-02-2008

Singapore

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-31, 14:15 PM

 


wrote:

You can change brightnes via Ati CCC --> Desktop properties -> Color

 

Any graphics glitches with new driver?


 

that is not changing the 'brightness' of the LCD panel. it is just changing the brightness of the LCD display.

 

when we change the brightness of LCD panel, we actually reducing the backlight intensity (which translate to lower power usage). on the other hand, changing the display brightness is merely changing the intensity of each pixel of the LCD, but the backlight is still on full power (which makes it useless in terms of power consumption). this is why changing brightness in laptops is handled by power settings, not under display settings.

 

bottom line, 10.10 catalyst is still broken... i'm just gonna stick with the older driver and hibernate.

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9644 Posts

12-27-2009

Canada

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-10-31, 15:24 PM
Agreed. I've tried yet again to get 10.10's brightness to change (I had it once before HNNRGH.) but no luck.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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43 Posts

01-17-2009

Slovenia

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-11-01, 2:08 AM

Thanks for explanation, was not aware of this.

 

I reverted back to original driver but there was still some glitches, probably both cards running at same time and overheating.

 

So, I disabled intel card in bios, running only Ati. Installed 10.10 driver and to my surprise keyboard shortcuts work and laptop is even cooler compared to original (switchable) driver. Unfortunately power consumption is bigger, 6-cell battery last around 2:20 vs. 3:10 using intel card.

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237 Posts

10-18-2008

Amsterdam

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Re: R400/T400/T500/W500: Switchable graphics issues with Win 7

2010-11-02, 19:13 PM

 


wrote:

joer80,

 

Two years?  No, this problem relates specifically to Windows 7 which came out at the end of October 2009 so it's coming up on 11 months.  It just feels like it's been two years.  Or, maybe this is two years in web time. :smileywink:

 

Honestly, we had a target of the end of August for new drivers, but there were some additional problems found in test.   It shouldn't be, but it's complicated in that we are trying to test and keep synchronized, drivers from Intel and AMD/ATI.   If there are issues associated with either side at a particular level, we are back on hold until we get the next update.

 

I understand this is our responsibility to get this addressed, and I apologize that this had become such a long running issue.  Perhaps almost as much as you, I would like to see us reach the finish line on this.  Jamez is doing some really solid work here in the forum and getting a lot of these older issues followed up and closed out, and speeding up the qualification and esclation of issues on some of the newer products.


 

No no no, it's indeed two years. The Vista driver support has foundational issues which have never been addressed. Improvements were announced for W7. And indeed, the drivers were better. Though, Lenovo still has to prove that it is in full command of the AMD/Intel- switchable graphics technology but honestly, I doubt that Lenovo is willing and able to do so. The technology is basically EOLed and way too complicated. Technically, it was just a stupid decision and I regret to have fallen for it.

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