Re: [Intel-gfx] [PATCH v2] drm/i915: Fix DDC probe for passive adapters

2015-05-28 Thread Ville Syrjälä
On Thu, May 28, 2015 at 01:05:39PM +0300, Jani Nikula wrote: Passive DP-DVI/HDMI dongles on DP++ ports show up to the system as HDMI devices, as they do not have a sink device in them to respond to any AUX traffic. When probing these dongles over the DDC, sometimes they will NAK the first

Re: [Intel-gfx] [PATCH v2] drm/i915: Fix DDC probe for passive adapters

2015-05-28 Thread Jani Nikula
On Thu, 28 May 2015, Ville Syrjälä ville.syrj...@linux.intel.com wrote: On Thu, May 28, 2015 at 01:05:39PM +0300, Jani Nikula wrote: Passive DP-DVI/HDMI dongles on DP++ ports show up to the system as HDMI devices, as they do not have a sink device in them to respond to any AUX traffic. When

Re: [Intel-gfx] [PATCH v2] drm/i915: Fix DDC probe for passive adapters

2015-05-28 Thread Jani Nikula
On Thu, 28 May 2015, Daniel Vetter dan...@ffwll.ch wrote: On Thu, May 28, 2015 at 02:36:01PM +0300, Jani Nikula wrote: On Thu, 28 May 2015, Ville Syrjälä ville.syrj...@linux.intel.com wrote: On Thu, May 28, 2015 at 01:05:39PM +0300, Jani Nikula wrote: Passive DP-DVI/HDMI dongles on DP++

Re: [Intel-gfx] [PATCH v2] drm/i915: Fix DDC probe for passive adapters

2015-05-28 Thread Ville Syrjälä
On Thu, May 28, 2015 at 02:36:01PM +0300, Jani Nikula wrote: On Thu, 28 May 2015, Ville Syrjälä ville.syrj...@linux.intel.com wrote: On Thu, May 28, 2015 at 01:05:39PM +0300, Jani Nikula wrote: Passive DP-DVI/HDMI dongles on DP++ ports show up to the system as HDMI devices, as they do not

Re: [Intel-gfx] [PATCH v2] drm/i915: Fix DDC probe for passive adapters

2015-05-28 Thread Daniel Vetter
On Thu, May 28, 2015 at 02:36:01PM +0300, Jani Nikula wrote: On Thu, 28 May 2015, Ville Syrjälä ville.syrj...@linux.intel.com wrote: On Thu, May 28, 2015 at 01:05:39PM +0300, Jani Nikula wrote: Passive DP-DVI/HDMI dongles on DP++ ports show up to the system as HDMI devices, as they do not