16 replies to this topic 2 votes

[ShareShiz]

So I have actually noticed the past few days, or kind of for awhile now, that my 9cell battery on my laptop just isn't lasting as long as it use to while using Windows 8. I have Windows 8 and Ubuntu dual boot, and it seems my battery lasts longer while using Ubuntu. My battery use to last around 4 hours, 7 hours if I am on power saving mode. However, now I seem to only get about 1min/percent, so about 100ish minutes worth of battery or ruffly 2 hours.

I was wondering if anyone else has encountered the same or similar problem as I have.


... Please no trolling in this thread.

[ahhell]

Most likely the drivers need to be optimized for Win8. You'll have to live with it for now.

[greenwizard88]

As ahhell said, it's probably drivers. Make sure all of your drivers are installed, and then go about updating the usual culprits (video, chipset, video, did I mention video?)

[ShareShiz]

Hmm didn't think about the drivers .. but yeah video playback sucks too. I actually use Ubuntu for video playback.

Thanks guys.

[giantpotato]

Are the power setting properly set to downclock the cpu and gpu?

[ShareShiz]

giantpotato, on 23 August 2012 - 18:10, said:

Are the power setting properly set to downclock the cpu and gpu?

how do you do that.

[giantpotato]

ShareShiz, on 23 August 2012 - 18:12, said:

how do you do that.

http://www.howtogeek...power-settings/

Should be the same for Windows 8. In the last step, advanced power options, there is a settings for processor power management, and there may be another setting for the GPU if you have a discrete card.

[Yves Bruyere]

It's a old thread but I have the same issue and I think to know why. I can heard my fan spinning on my laptop with windows 8 while doing nothing and my task manager is almost at 0% on the processor. I have an HP Pavilion dv7 with AMD 4 core processor and ATI 2 GPU unit. 2 GPU is for one in low power mode and the other in high power mode. ex: while I'm not plugged, it will use the low power GPU instead of the high one.

My low power GPU is a ATI Mobility Radeon HD 4200.
My high power GPU is a AMD Radeon HD 6300M.

But in Windows 8, these 2 GPU unit seem not to be able to communicate with each other correctly. Each need different instance of the driver. I don't know if it was both the same WDDM version 1.1 in windows 7, but I noticed that my high power GPU was using a WDDM version 1.2 and my low power was using WDDM 1.1. Two different drivers model version.

Currently today, if I have the mistake to update my high power GPU in windows update, my graphics on my laptop will run on it even if it's unplugged but in the both case, very slowly. So I have to keep it disabled and at the old version at all time. It's like to have a big issue with my low power GPU. I have to keep that way to keep high performance graphics with my low power GPU if I want to use Windows 8 correctly but not at full speed. Some games I can't play because of that.

At the end, with all that info, my conclusion is both my GPU is running even if I use only one. That I think explain why my laptop is using double the power than needed for nothing.

I don't know about with your laptop, but if you are using 2 GPU like mine, that can confirm my theory.
I would like some feedback about this. Thank you.

[Ambroos]

Yves Bruyere, on 31 October 2012 - 02:31, said:

It's a old thread but I have the same issue and I think to know why. I can heard my fan spinning on my laptop with windows 8 while doing nothing and my task manager is almost at 0% on the processor. I have an HP Pavilion dv7 with AMD 4 core processor and ATI 2 GPU unit. 2 GPU is for one in low power mode and the other in high power mode. ex: while I'm not plugged, it will use the low power GPU instead of the high one.

My low power GPU is a ATI Mobility Radeon HD 4200.
My high power GPU is a AMD Radeon HD 6300M.

But in Windows 8, these 2 GPU unit seem not to be able to communicate with each other correctly. Each need different instance of the driver. I don't know if it was both the same WDDM version 1.1 in windows 7, but I noticed that my high power GPU was using a WDDM version 1.2 and my low power was using WDDM 1.1. Two different drivers model version.

Currently today, if I have the mistake to update my high power GPU in windows update, my graphics on my laptop will run on it even if it's unplugged but in the both case, very slowly. So I have to keep it disabled and at the old version at all time. It's like to have a big issue with my low power GPU. I have to keep that way to keep high performance graphics with my low power GPU if I want to use Windows 8 correctly but not at full speed. Some games I can't play because of that.

At the end, with all that info, my conclusion is both my GPU is running even if I use only one. That I think explain why my laptop is using double the power than needed for nothing.

I don't know about with your laptop, but if you are using 2 GPU like mine, that can confirm my theory.
I would like some feedback about this. Thank you.

That's a driver issue. If you can't get the configuration-specific driver from HP to work in Windows 8 you're out of luck.

I have a hybrid graphics setup too. I can switch between my Intel HD Graphics and a proper nVidia GeForce card but unfortunately Windows 8 doesn't seem to like the drivers for it. The only option I had was to set switching to static in my BIOS, which means I have to reboot to switch between the two - and even then the nVidia Graphics just won't install since even those drivers are incompatible.

It's a common issue with exotic hardware configurations. When your hardware manufacturer no longer provides updates for new operating systems you're basically screwed - and there's not much you can do about it.

[Yves Bruyere]

Ambroos, on 31 October 2012 - 02:53, said:

That's a driver issue. If you can't get the configuration-specific driver from HP to work in Windows 8 you're out of luck.

I have a hybrid graphics setup too. I can switch between my Intel HD Graphics and a proper nVidia GeForce card but unfortunately Windows 8 doesn't seem to like the drivers for it. The only option I had was to set switching to static in my BIOS, which means I have to reboot to switch between the two - and even then the nVidia Graphics just won't install since even those drivers are incompatible.

It's a common issue with exotic hardware configurations. When your hardware manufacturer no longer provides updates for new operating systems you're basically screwed - and there's not much you can do about it.

I guess more for a Microsoft issues with Windows 8 than a driver issue with Windows 8. Because Windows 8, logically, have to run any driver compatible with Vista and Windows 7. But I think is the difference about the driver WDDM version model that is the big problem. I hope that AMD & ATI will correct that soon.

Thanks for your reply.

[cleverclogs]

It's likely driver issues. I've got to wait until end November before Samsung release updated drivers for my laptop. In the meantime, fans whir away etc etc. I'm happy they're still supporting my laptop though!

[Seketh]

Run the AMD package installer in Windows 7 compatibility mode. Problem solved.

[Yves Bruyere]

Seketh, on 31 October 2012 - 11:46, said:

Run the AMD package installer in Windows 7 compatibility mode. Problem solved.

Failed! Same thing than updating driver whit Windows Update. Graphics run very slowly.
I have to Refresh my Windows again, thank you for that.

[syobon999]

my battery last about 3:00 in windows 8, against 2:40 in windows7, yeah windows 8 is winnin.

[Ned]

I use some modded drivers on my laptop to get the hybrid (or switchable) graphics working. HP has yet to release proper windows 8 drivers for my computer. Which is odd because they have already released some windows 8 drivers for my computer along with a bios update. Trying to install switchable graphics in compatibility mode for windows 7 fails. Windows update will install the latest drivers, but that won't install the components necessary to make them switch back and forth.