[mythtv-users] Amdgpu disable power management?

[Daniel Frey]

On Thu, Aug 24, 2017 at 7:15 PM Hika van den Hoven <hikavdh at gmail.com>
wrote:

> Hoi Daniel,
>
> Friday, August 25, 2017, 12:57:13 AM, you wrote:
>
> > Anyone know how to disable power management on the amdgpu driver?
> > Whenever I turn off the TV it disconnects and I'm left with a black
> > screen when I try to turn it back on. Sometimes I have to unplug the
> > HDMI cable before restarting lighten.
> > This is on xubuntu 16.04.
> > I tried putting a minimal xorg config to disable hot plugging, but it
> had no effect.
>
> I don't think it's a powermanagement thing, but a HDMI thing. There
> have been maybe a year ago several threads about this.
> I use in my boot manager:
>
> modeset=1 video=DVI-I-1:e
>
> to force the hdmi port to be enabled, independent of any connected
> monitor. Which one will be your hdmi is dependent on your card.
>
> Tot mails,
>   Hika                            mailto:hikavdh at gmail.com
>
> "Zonder hoop kun je niet leven
> Zonder leven is er geen hoop
> Het eeuwige dilemma
> Zeker als je hoop moet vernietigen om te kunnen overleven!"
>
> De lerende Mens
>
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Thanks Hika,

Can you give a little more info on how to best detect these items?  Also,
Can I just add this to /etc/default/grub?  Or do I need to edit it on boot?

Thanks,
Dan
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