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T400 swichable gfx in windows 7, where?
Posted: Sat Dec 17, 2011 2:43 pm
by MiRacL
Hello
I just bought an T400 with the switchable gfx. I've just installed win 7 on a SSD. I've installed all the drivers from Lenovo, but the one thing i cant change is the switchable gfx. Both cards are installed and working, but i cant find the switchable gfx options as stated in the install instructions for the driver from Lenovo. When i left click or rightclick on the battery icon, the "switchable gfx" option isn't there.
Anyone have any ideas?
Re: T400 swichable gfx in windows 7, where?
Posted: Sat Dec 17, 2011 4:07 pm
by Brad
Confirm the BIOS setting is set for switchable.
Brad
Re: T400 swichable gfx in windows 7, where?
Posted: Sat Dec 17, 2011 5:24 pm
by MiRacL
It is. Reinstalled the drivers, no change. I cant find the option anywhere.
Using Windows 7 x64 Ultimate.
T400 specs:
T8600
SSD
8gb ram
1440x900
Intel + ati 3470 gfx.
Re: T400 swichable gfx in windows 7, where?
Posted: Sun Dec 18, 2011 5:57 am
by bill bolton
MiRacL wrote:Using Windows 7 x64 Ultimate.
I'm typing this on a T400 running Win 7 Ultimate x64, and the switchable graphics option is definitely there when I right-click on the tool bar PM icon. I'm running PM 3.64
Cheers,
Bill B.
Re: T400 swichable gfx in windows 7, where?
Posted: Sun Dec 18, 2011 8:16 am
by Brad
In device manager what is noted under DISPLAY ADAPTERS?
Brad
Re: T400 swichable gfx in windows 7, where?
Posted: Sun Dec 18, 2011 2:20 pm
by MiRacL
ATI Mobility Radeon HD 3400 Series
Mobile Intel 4 Series Express chipset Familiy.
The driver for the "mobile intel gfx" are from AMD, this can't be right? I have just installed the "Switchable gfx" driver package from the lenovo site.
Haven' installed any windows updates yes, like SP1.
If i right click on the pm icon the options i get are:
Adjust screen brightness
Power options
Windows mobility center
Re: T400 swichable gfx in windows 7, where?
Posted: Mon Dec 19, 2011 5:02 am
by bill bolton
MiRacL wrote:The driver for the "mobile intel gfx" are from AMD, this can't be right?
I presume you meant ATI, and yes, it is an ATI supplied driver.
On my T400 the Intel driver is version 8.792.5.0, while the Radeon driver ihas the same version number. This is the current switchable graphics driver version on the Lenovo support site.
Cheers,
Bill B.
Re: T400 swichable gfx in windows 7, where?
Posted: Mon Dec 19, 2011 6:05 am
by MiRacL
Yea. It's the same driver i have. Still missing the option in the power manager. Weird.