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My notebook has Ubuntu 16.04 installed. But the fans are active most of the time. This reduces the time it can run on battery. This is unlike when I used Ubuntu 15.10.

When you run the command:

lspci -nn | grep VGA

I see these results:

00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09)  
02:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] [1002:6841]

Does Ubuntu 16.04 work with this video card? Any suggestions?

MadMike
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L. WD
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3 Answers3

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See my recent post on configuring DPM: https://askubuntu.com/a/825149/594936

Perhaps yours is not choosing the "Battery" profile (possibly due to the driver not having an exact devid match for your chipset, and it's mapping to a more generic bios, i.e. a desktop version of the chip). The commands/tools referenced above should help you figure that out.

Community
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M K
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I have same issue with kernel 4.4.0-22.40, but after updating to 4.4.0-24.43 it seems that the dynamic power management works properly:

    $sudo cat /sys/kernel/debug/vgaswitcheroo/switch
    0:IGD:+:Pwr:0000:00:02.0
    1:DIS: :DynOff:0000:01:00.0

I got kernel 4.4.0-24.43 from the xenial updates repo.

P.S. The official version of an Ubuntu kernel is found in the /proc/version_signature file:

    $cat /proc/version_signature
    Ubuntu 4.4.0-24.43-generic 4.4.10
popov895
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You have two options. Either downgrade to 14.04 or install open source AMDGPU/ATI drivers.

This is how I installed AMD drivers in my Ubuntu 16.04 Xenial

Download the AMDGPU-PRO from here

Run the following commands in the terminal

tar xvzf amdgpu-pro-16.40-XXXXXX.tar.xz

cd amdgpu-pro-16.40-XXXXXX

chmod +x amdgpu-pro-install

sudo ./amdgpu-pro-install

Replace XXXXXX with the build number. Finally issue the following obvious command.

sudo reboot

To verify if it installed successfully issue dpkg -l amdgpu-pro

Source: https://support.amd.com/en-us/kb-articles/Pages/AMDGPU-PRO-Install.aspx

Saif
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