I checked locally in BDC, Seems we don't have these boards available with us (in working state). Regards Shashank -----Original Message----- From: Ville Syrjälä [mailto:ville.syrjala@xxxxxxxxxxxxxxx] Sent: Tuesday, February 09, 2016 11:53 PM To: Sharma, Shashank Cc: Nick Bowler; Daniel Vetter; linux-kernel@xxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression) On Tue, Feb 09, 2016 at 07:36:41PM +0200, Ville Syrjälä wrote: > On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote: > > On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote: > > > Hi Nick, > > > > > > Sonika is OOO for this week. > > > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. > > > > > > As per the Bspec, we must check live status before trying to read EDID. > > > Is it possible for you to check with an HDMI analyzer and probe live status register ? > > > > BTW I'm not at all convinced about the current live status bit > > defines we have for g4x. Supposedly someone tested them and found > > that they don't match the spec, but IIRC when I tried them on one > > g4x machine here, they did match the spec (well, at least for the > > ports present on that particular board). > > > > So something like this may or may not help: > > > > diff --git a/drivers/gpu/drm/i915/i915_reg.h > > b/drivers/gpu/drm/i915/i915_reg.h index 188ad5de020f..80c08016e522 > > 100644 > > --- a/drivers/gpu/drm/i915/i915_reg.h > > +++ b/drivers/gpu/drm/i915/i915_reg.h > > @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells { > > * Please check the detailed lore in the commit message for for experimental > > * evidence. > > */ > > -#define PORTD_HOTPLUG_LIVE_STATUS_G4X (1 << 29) > > +#define PORTD_HOTPLUG_LIVE_STATUS_G4X (1 << 27) > > #define PORTC_HOTPLUG_LIVE_STATUS_G4X (1 << 28) > > -#define PORTB_HOTPLUG_LIVE_STATUS_G4X (1 << 27) > > +#define PORTB_HOTPLUG_LIVE_STATUS_G4X (1 << 29) > > /* VLV DP/HDMI bits again match Bspec */ > > #define PORTD_HOTPLUG_LIVE_STATUS_VLV (1 << 27) > > #define PORTC_HOTPLUG_LIVE_STATUS_VLV (1 << 28) > > Just retested the g4x machine here, and port B is definitely on bit > 29, port C on bit 28. No port D on ELK, so can't check that. So either > someone made a fumble when they tested this originally, or some boards > are just wired incorrectly, or CTG is where it was tested and that > actually disagrees with the spec for some reason. I just tried to trawl the w/a database for anything interesting, and the only thing I ran across was WaDPHDMISupriousHpd (without any description of course) for both elk and ctg. Nothing else really relevant looking. So I think we should get someone to double check this on ctg, and then we can decide whether we change the bits just for elk or for ctg as well. > > > -- > > 2.4.10 > > > > > > > > > > Regards > > > Shashank > > > -----Original Message----- > > > From: Nick Bowler [mailto:nbowler@xxxxxxxxxx] > > > Sent: Tuesday, February 09, 2016 10:03 PM > > > To: Jindal, Sonika > > > Cc: linux-kernel@xxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; > > > Daniel Vetter; Sharma, Shashank > > > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 > > > (regression) > > > > > > On 1/28/16, Nick Bowler <nbowler@xxxxxxxxxx> wrote: > > > > On 2016-01-21, Nick Bowler <nbowler@xxxxxxxxxx> wrote: > > > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@xxxxxxxxx> wrote: > > > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote: > > > >>>> On 1/20/16, Nick Bowler <nbowler@xxxxxxxxxx> wrote: > > > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@xxxxxxxxx> wrote: > > > >> [...] > > > >>>>>> Does the same system works with any other monitor? > > > >>>>> I'll see if I can find another to try. > > > >>>> I tried another monitor, and the same problem occurs. > > > >>> Which make are these monitors? > > > >> > > > >> - LG Flatron W2253V > > > >> - Dell E228WFPc > > > >> > > > >>> Do you have any other system other than G45? > > > >> > > > >> Nothing else with Linux 4.4, unfortunately. > > > > > > > > Anything else you want me to try? > > > > > > > > This issue is still present in 4.5-rc1. > > > > > > Ping? > > > > > > HDMI is still broken on my system in 4.5-rc3. > > > > > > Cheers, > > > Nick > > > _______________________________________________ > > > dri-devel mailing list > > > dri-devel@xxxxxxxxxxxxxxxxxxxxx > > > https://lists.freedesktop.org/mailman/listinfo/dri-devel > > > > -- > > Ville Syrjälä > > Intel OTC > > _______________________________________________ > > dri-devel mailing list > > dri-devel@xxxxxxxxxxxxxxxxxxxxx > > https://lists.freedesktop.org/mailman/listinfo/dri-devel > > -- > Ville Syrjälä > Intel OTC > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Ville Syrjälä Intel OTC _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
