On 12.04 I used to utilize this procedure, to power off my ATI graphics and prevent my system from overheating, it worked fine. After installing 16.04, I've been trying everything I could find on the net, but no solution. My system runs extremely hot, causing the fans to run at max almost all the time. Can anybody come up with a little hack to shutdown that discrete ATI Radeon card?

thanks. M.Schoofs

System: HP Pavilion dv7-6190ed (FW F.18) [AMD/ATI] Whistler [Radeon HD 6730M/6770M/7690M XT]

2 Answers 2


Following Neni's answer, I had kernel panic after sleep. I solved my problem by adding radeon.modeset=0 amdgpu.runpm=0 acpi_backlight=intel_backlight to GRUB_CMDLINE_LINUX_DEFAULT

To edit file :

sudo nano /etc/default/grub

Find line :


And replace with :

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.modeset=0 amdgpu.runpm=0 acpi_backlight=intel_backlight"

To regenerate config :

sudo update-grub

Reboot :

sudo reboot

What those options do :

  • radeon.modeset=0 disables radeon driver
  • amdgpu.runpm=0 disables the power management from amdgpu driver
  • acpi_backlight=intel_backlight uses intel driver to control laptop screen backlight

Official bug report suggests as a workaround either manually install newer kernel (which you would have to manually update) or run those steps :

  1. /etc/default/grub: Add amdgpu.runpm=0 to GRUB_CMDLINE_LINUX_DEFAULT
    Included above.

  2. /etc/rc.local: Add the following command:

    echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
    This step caused my system to freeze on shutdown so I just skipped it.

  3. /etc/X11/xorg.conf: Create the file if it doesn't exist, and add the following in order to get the backlight controls working (otherwise it would be misdetected):

    Section "Device"
        Identifier "Card0"
        Driver "intel"
        Option "Backlight" "intel_backlight"
    This step is replaced replaced above by acpi_backlight=intel_backlight

  • What AMD chips do you have? My iGPU is in a Richland APU, the dGPU is 7970m (GCN1.0), so I can't use the new AMD drivers. But I'll give it a shot.
    – ecth
    Mar 9, 2017 at 6:24
  • This worked.. Thanks!
    – Dave
    Jan 23, 2020 at 13:49
  • Thanks. It worked for me. Apr 17, 2022 at 12:28

Check graphic drivers which are in use (radeon/amdgpu should be listed):

lspci -nnk | grep -i vga -A3 | grep 'in use'

Note: If amdgpu is listed, replace radeon with amdgpu in the instructions below!

Open the following file:

gksudo gedit /etc/default/grub

Modify the following line by adding radeon.modeset=0:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.modeset=0"

Save and Exit

Back to Terminal:

sudo update-grub
sudo reboot

Check again which graphic drivers are in use (radeon/amdgpu should not be listed anymore):

lspci -nnk | grep -i vga -A3 | grep 'in use'

Now, your ATI/AMD graphic card is disabled and your computer works only with the Intel graphics. The fan speed should significantly decrease.

  • 1
    What if the driver in use is Intel onboard (i915) instead of ATI's discreet, but the fan still runs and heats up. Could I still apply the same change to grub? Would it work? It started happening when I upgraded kernel build to from (battery life reduced).
    – Mookey
    May 20, 2016 at 8:00
  • check if your discrete card is powered: sudo cat /sys/kernel/debug/vgaswitcheroo/switch... since the kernel update it is powered without beeing in use... if so, then do the above instructions, so far the only thing that works for me...
    – Neni
    May 20, 2016 at 8:05
  • 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynOff:0000:04:00.0; 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :Pwr:0000:04:00.0
    – Mookey
    May 20, 2016 at 8:21
  • So both kernels are the same, yet there's a considerable difference.
    – Mookey
    May 20, 2016 at 8:22
  • That's the point, your DIS(crete) graphics card is powered by default... the dynamic power management is not working properly since the kernel update... powering off the discrete card (echo OFF > /sys/kernel/debug/vgaswitcheroo/switch) is causing problems on reboot... we just have to wait until the end of summer 2016, then the new proprietary driver for amd/ati should solve all the problems... until then, disable your ati graphics as described above... I have no other solution...
    – Neni
    May 20, 2016 at 8:28

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