Comment # 2 on bug 1185970 from Emrecan ������u������ter

(In reply to Takashi Iwai from comment #1)
> First off, disabling ACPI is really bad on modern systems, and most likely
> it'd break anything else.  So please don't do it unless you must do so
> temporarily.
> 
> About the AMDGPU: the driver doesn't support the hotplug removal, as it
> seems, it spews the error message like:
>   [drm:amdgpu_pci_remove [amdgpu]] *ERROR* Hotplug removal is not supported
> 
> So the way you're trying to switch the graphics is no supported operation.
> 
> Usually switching the graphics between switchable GPUs is done via
> vga_switcheroo.  Or for the hybrid GPU, PRIME is used.

Actually, I don't need the external gpu. It consumes a lot of energy and in my
daily routine, I don't need this kind of GPU power. However, the graphics
switched by automatically and I can't disable it unless the command which I
mention in first message. 

It was same when I'm using Gnome with Wayland but instead of freezing for long
minutes, this switch happens in seconds and completed successfully. However, I
wouldn't happy happy with it because I don't need this kind of switch. 

P.S: I can't speak English fluently. I'm sorry if there is some grammatical
mistakes.