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

[luckygoodheart]

The Intel graphics driver causes stuttering when playing Recorded TV from Windows Media Center. There is definitely something wrong with hardware acceleration on Intel. Switching to ATI - the problem disappears.

One problem solved, another introduced. Seems to be the way these days.

[JameZ]

@All,

Appreciate everyone's feedback on this. Have cascaded your findings to engineering.

//JameZ

[c1p0]

I am currently having an issue with switchable graphics. It appears that after installing the latest drivers: 8.752.4-101022a-
107489C , when on the dedicated graphics card (ATI), it doesn't detect my external monitor after coming back from sleep mode. This is happening both when my T500 is docked or when I just try to connect the external monitor directly to its VGA port. 

It would appear that the issue is fixed by switching to the Intel graphics card and then back to ATI. After doing so, the external monitor is detected and it works until the next time you put it to sleep and wake it up.

Does anybody else have the same problem? Anybody know how to fix it?

BTW, I have a T500 with T9600, Win 7 64 bit Professional.

Thanks!

[alex-kir]

c1p0 I have the same config and the same issue too!

[c1p0]

I'm sure the new drivers came with the issue. Used to work fine with the previous version.

[ColonelONeill]

Can confirm with 32-bit Windows 7.

[ColonelONeill]

I am now also afflicted with the GPU-accelerated browsers failing on the Intel card. The only potential event that my have caused this was that I tested the "sleep with external monitor on ATI" bug.

However, if you load said GPU-accelerated browser while on discrete and switch to integrated, the browser seems to remain functional.

Affects both Minefield and IE9.

[madcrow]

Hi Everyone,

I have noticed two things that may be worth mentioning.

1.:

SMplayer has been misbehaving since I installed the new driver (8.752.4-101022a-107489C-Lenovo).

When I try to switch between fullscreen and windowed mode, It usually crashes when using the GL video output driver no matter which graphics controller is active.

It was working fine with the old driver from Lenovo (8.641.1.1-090824a-089811C) .

2.:

In Power Manager my display brightness is set to 50% in battery-powered mode and to 100% in AC mode.

When I enter battery mode, the brightness always decreases as it should. However whenever I return from battery mode to AC the brightness "forgets" to change back to maximum. If I enter Power Manager in this state, I find the AC brightness slider set to the middle position, so I have to readjust it every time

This issue existed both before and after the installation of the new driver, regardless of the graphics adapter in use.

Has anyone experienced these problems?

T500 2082-52G

BIOS: 3.15

WIN7 Pro x64

Switchable graphics driver: 8.752.4-101022a-107489C-Lenovo

Power Management driver: 1.60

Power Manager: 3.30

[ColonelONeill]

I haven't been having issues with video overlay output using VLC, MPC, WMP, or WMC with the Intel card.

However issue 2 sounds like a Power Manager issue rather than a switchable driver issue.

[Mark_Lenovo Administrator]

All,

I moved all the discussions about the new symptoms here from the old thread.   Please continue to work with Jamez here, so that we can get engineering working on the new symptoms.

We should note the different symptoms and ensure we capture the cosensus opinion of the comment elements - hardware accelerated browsers affected, Outlook 2007, etc.   It will also help to focus on the more mainstream applications - we will get more attention and focus in addressing an issue that will be understood to affect a broad number of customers and businesses rather than a few niche games or unique applications.  

Thanks for your help - sorry if I jumbled the order of the comments during the move.  It's a challenge because some use linear view and some use threaded view when browsing and responding in the forum.

Best regards,

Mark