Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-09 Thread Alex Deucher
On Thu, Mar 9, 2017 at 5:55 AM, Lukas Wunner wrote: > On Wed, Mar 08, 2017 at 03:34:47PM -0500, Alex Deucher wrote: >> On Wed, Mar 8, 2017 at 12:01 AM, Lukas Wunner wrote: >> > On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: >> >> On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-09 Thread Lukas Wunner
On Wed, Mar 08, 2017 at 03:34:47PM -0500, Alex Deucher wrote: > On Wed, Mar 8, 2017 at 12:01 AM, Lukas Wunner wrote: > > On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: > >> On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: > >> > An external Thunderbolt GPU can neither drive the

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-08 Thread Alex Deucher
On Wed, Mar 8, 2017 at 12:01 AM, Lukas Wunner wrote: > On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: >> On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: >> > An external Thunderbolt GPU can neither drive the laptop's panel nor be >> > powered off by the platform, so there's no

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-08 Thread Lukas Wunner
On Wed, Mar 08, 2017 at 11:46:33AM +0100, Peter Wu wrote: > On Wed, Mar 08, 2017 at 06:01:54AM +0100, Lukas Wunner wrote: > > On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: > > > On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: > > > > An external Thunderbolt GPU can neither dri

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-08 Thread Peter Wu
On Wed, Mar 08, 2017 at 06:01:54AM +0100, Lukas Wunner wrote: > On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: > > On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: > > > An external Thunderbolt GPU can neither drive the laptop's panel nor be > > > powered off by the platform, so

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-07 Thread Lukas Wunner
On Tue, Mar 07, 2017 at 03:30:30PM -0500, Alex Deucher wrote: > On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: > > An external Thunderbolt GPU can neither drive the laptop's panel nor be > > powered off by the platform, so there's no point in registering it with > > vga_switcheroo. In fact,

Re: [PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-03-07 Thread Alex Deucher
On Fri, Feb 24, 2017 at 2:19 PM, Lukas Wunner wrote: > An external Thunderbolt GPU can neither drive the laptop's panel nor be > powered off by the platform, so there's no point in registering it with > vga_switcheroo. In fact, when the external GPU is runtime suspended, > vga_switcheroo will cut

[PATCH 4/5] drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

2017-02-24 Thread Lukas Wunner
An external Thunderbolt GPU can neither drive the laptop's panel nor be powered off by the platform, so there's no point in registering it with vga_switcheroo. In fact, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU, resulting in a lockup. C