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Windows 7: Switchable graphics on HP dv6t laptop not working

04 Mar 2014   #1
vv211

Windows 7 Professional x64 w/SP1
 
 
Switchable graphics on HP dv6t laptop not working

Nevermind, turns out my dGPU was somehow disabled in Device Manager. Though if this occurs again and it's not disabled in device manager I'll refer back to this thread for helpProblem came back (previously I thought it was stuck on the iGPU, but just a problem with Device Manager)

My laptop is set up with switchable graphics, between the iGPU (Intel HD 3000) and the dGPU (AMD Radeon HD 6770M)

In my BIOS, I have set the mode to Fixed (In dynamic or switchable (I don't remember exactly what it's called), the graphics cards change seamlessly, in fixed mode, the display shuts down while the cards switch)

In Catalyst Control Center I have the graphics set to change based on whether my laptop is plugged in (on battery, iGPU is selected, on AC power, dGPU is selected)



Usually, everything works as it should. If I start up my laptop plugged in, the dGPU is selected. If I start it up on just the battery, the iGPU is selected, but if I plug in the AC adapter, it prompts to switch to the dGPU, or I can use CCC to select whichever GPU I want at anytime.

Lately though, it seems to be stuck on the dGPU. When I boot up on battery power it defaults to the dGPU, and I'm unable to switch over to the iGPU through CCC. This has happened in the past, but has been "resolved" with a driver update/re-install for the dGPU. Or of course an OS re-install.

I haven't installed any new software recently, but with my dual-boot between Windows and Ubuntu the Windows MBR inexplicably got screwed up recently, so I had to restore that; however the problem with the GPU's has occurred in the past when I was not dual-booting, so I'm not sure what could be causing this.

Everything looks good in device manager.

Any ideas or suggestions as to the cause, or a solution?

Edit: figured I should add that I have it set to fixed mode in the BIOS because CCC sometimes is very poor at judging which card it should use for which application, and so sometimes selects the iGPU when I need to be using the dGPU (for games and such).


My System SpecsSystem Spec
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25 Mar 2014   #2
vv211

Windows 7 Professional x64 w/SP1
 
 

Problem came back. any thoughts?
My System SpecsSystem Spec
26 Mar 2014   #3
hdmiproblem

windows 7 home basic
 
 

Look your power plan option details may be you disabled gpu from there or try updating your bios

My System SpecsSystem Spec
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07 Apr 2014   #4
vv211

Windows 7 Professional x64 w/SP1
 
 

I've tried and checked each of the different power plans, so far it's a no-go.
BIOS is at the latest version

Also, sorry for the late reply, I thought I had already replied :/
My System SpecsSystem Spec
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 Switchable graphics on HP dv6t laptop not working




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