Please attach dmesg with drm.debug=14 module param set.

Do you have some userspace that responds to hotplug events?

What does this have to do with audio, and what is "APL" in the description?

Hi,

I'll on 2 days training during 9:00am~4:30pm on Thursday and Friday, please expect delayed reply. Anything emergency, please call 86-15921227373. Thanks.

BR,
Han Lu

Hi Jani,

My platform is sent to rework. I'll add dmesg when rework is done.
APL(Apollolake) is the type name of BXT-P I'm using.

Created attachment 119629 [details]
dmesg with boot parameter drm.debug=14 and HDMI cable unconnected

Hi Jani,

Update:
With latest commit on drm-nightly repo, the issue is NOT reproduced on DP, but still reproduced on HDMI. Please find dmesg log attached.
My platform is BXT-P RVP2B.

Reproduce steps:
1. Disconnect HDMI cable，boot up with parameter "drm.debug=14"
2. ssh to BXT
3. run "udevadm monitor --property --tag-match=HOTPLUG", output is
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
4. Plug on HDMI cable, no output on SSH interface
5. In ssh, dmesg > dmesg.log

Please try http://patchwork.freedesktop.org/patch/msgid/1447931396-19147-1-git-send-email-tiwai@suse.de

With Takashi's patch the issue is still existing. Boot BXT-P without HDMI cable and the HDMI monitor does not display after plug on HDMI cable.

The issue still happen with the latest configuration and drm-intel-testing, we cannot get the output on HDMI unless we boot with HDMI from the beginning

Bios : 119.10
KSC : 1.0
OS : Ubuntu 14.04.03 LTS x86_64

Graphic stack versions  :
-----------------------------------------
cairo version: 1.15.2 / commit :  db8a7f1 
drm version :  libdrm-2.4.66  / commit : b38a4b2 
intel-driver : 1.6.2 / commit: 683edee
libva version : libva-1.6.2 / commit : 304bc13
mesa version : mesa-11.0.8 / commit : 261daab 
xf86-video-intel version : 2.99.917  / commit : baec802 
xserver version :xorg-server-1.18.0 / commit :7921764 

kernel drm-intel-testing:
------------------------------------------
commit 91587c722c28c4116dedbfbf08aa874377bc76f8
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Dec 4 17:35:54 2015 +0100

    drm-intel-nightly: 2015y-12m-04d-16h-35m-07s UTC integration manifest

kernel version : 4.4.0-rc3
git url        : git://anongit.freedesktop.org/drm-intel
git branch     : drm-intel-testing
git describe   : drm-intel-next-2015-11-20-rebased-13721-g91587c7

Could you attach a dmesg with a working setup, that is when you boot with the HDMI output connected?

While I chase down hardware on my side, could someone please attempt to reproduce this with a more recent kernel?  In particular please verify that the following patch is in there.

commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
Author: Gary Wang <gary.c.wang@intel.com>
Date:   Wed Dec 23 16:11:35 2015 +0800

    drm/i915: increase the tries for HDMI hotplug live status checking

I still reproduce this issue using the following Kernel.

commit 8fe9e785ae04fa7c37f7935cff12d62e38054b60
    Author: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
    Date:   Thu Jan 21 11:03:06 2016 +0000
    drm-intel-nightly: 2016y-01m-21d-11h-02m-42s UTC integration manifest

from: git://anongit.freedesktop.org/drm-intel

Verified that I do have the patch suggested by Jim Bride

Created attachment 121289 [details]
dmesg log with drm.debug=14 with a working setup, HDMI connected

Attaching log with HDMI connected and having a working setup as requested by Imre Deak's

(In reply to Jairo Miramontes from comment #11)
> Created attachment 121289 [details]
> dmesg log with drm.debug=14 with a working setup, HDMI connected
> 
> Attaching log with HDMI connected and having a working setup as requested by
> Imre Deak's

Thanks. This isn't actually with drm.debug=14, could you provide one with that option?

Created attachment 121319 [details]
(2)dmesg log with drm.debug=14 with a working setup, HDMI connected

Excuse me, this dmesg does have the drm.debug=14 option on
Regards

(In reply to Jairo Miramontes from comment #13)
> Created attachment 121319 [details]
> (2)dmesg log with drm.debug=14 with a working setup, HDMI connected
> 
> Excuse me, this dmesg does have the drm.debug=14 option on
> Regards

Thanks. It looks like you have the following routing:
Host DDI0 <- LSPCON DP-HDMI converter chip on board <- HDMI connector

The driver outputs a DP signal which is converted by LSPCON to HDMI. Since we don't have a support in the driver (yet) to configure the LSPCON chip this will only work if BIOS has done so already, but it seems that BIOS will not configure the chip if there isn't any display connected. LSPCON support is being added atm, so we need to revisit this ticket when that's done. Not sure what's the proper bugzilla status until then, I'm leaving this open for now.

Bug scrub
---------
Increase priority

Hi,

I'm taking AL from 2/5/2016 to 2/14/2016, please expect delayed reply. Anything emergency, please call 86-15921227373. Thanks.

BR,
Han Lu

Hi Lu Han,

could you please update to this.

The issue is still reproduced on drm-intel-testing-2016-02-14 and latest commit, FYI.

Change priority to highest. It will have an impact on Beta milestones.

The issue is fixed, but we need to wait for the patches supporting LSPCON be upstreamed.

This issue still happens on BXT-P with the following configuration:

Hardware configuration
=======================
Platform	BXT - P (APL)
Motherboard model	Apollo Lake
Motherboard type	 NOTEBOOK Hand Held
Motherboard manufacturer	Intel Corp.
CPU family	Other
CPU information	06/5c
GPU Card	Intel Corporation Device 5a84 (rev 03) (prog-if 00 [VGA controller])
Memory ram	8 GB

Software configuration
=======================
 --> Component : drm 
	 url : http://cgit.freedesktop.org/mesa/drm 
	 tag : libdrm-2.4.67-11-gea78c17 
	 commit : ea78c17 
	 author : Emil Velikov <emil.l.velikov@gmail.com> 
	 age : 20 hours ago 
 --> Component : mesa 
	 url : http://cgit.freedesktop.org/mesa/mesa 
	 tag : mesa-11.1.2 
	 commit : 7bcd827 
	 author : Emil Velikov <emil.velikov@collabora.com> 
	 age : 7 weeks ago 
 --> Component : xf86-video-intel 
	 url : http://cgit.freedesktop.org/xorg/driver/xf86-video-intel 
	 tag : 2.99.917-590-g094924f 
	 commit : 094924f 
	 author : Chris Wilson <chris@chris-wilson.co.uk> 
	 age : 4 days ago 
 --> Component : libva 
	 url : http://cgit.freedesktop.org/libva/ 
	 tag : libva-1.7.0-1-g2339d10 
	 commit : 2339d10 
	 author : Xiang Haihao <haihao.xiang@intel.com> 
	 age : 13 days ago 
 --> Component : vaapi (intel-driver) 
	 url : http://cgit.freedesktop.org/vaapi/intel-driver 
	 tag : 1.7.0-5-g759e44d 
	 commit : 759e44d 
	 author : peng.chen <peng.c.chen@intel.com> 
	 age : 13 days ago 
 --> Component : cairo 
	 url : http://cgit.freedesktop.org/cairo 
	 tag : 1.15.2 
	 commit : db8a7f1 
	 author : Bryce Harrington <bryce@osg.samsung.com> 
	 age : 4 months ago 
 --> Component : xserver 
	 url :  http://cgit.freedesktop.org/xorg/xserver 
	 tag : xorg-server-1.18.0-254-g44e1c97 
	 commit : 44e1c97 
	 author : Olivier Fourdan <ofourdan@redhat.com> 
	 age : 8 days ago 
 --> Component : intel-gpu-tools 
	 url : http://cgit.freedesktop.org/xorg/app/intel-gpu-tools 
	 tag : intel-gpu-tools-1.14-129-g41a26b5 
	 commit : 41a26b5 
	 author : Chris Wilson <chris@chris-wilson.co.uk> 
	 age : 26 hours ago  


kernel configuration
=====================
Branch : drm-intel-nightly
commit f5d413cccefa1f93d64c34f357151d42add63a84
Author: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Date:   Thu Mar 24 14:35:16 2016 +0000

    drm-intel-nightly: 2016y-03m-24d-14h-34m-29s UTC integration manifest
Kernel version : 4.5.0
Architecture : source amd64 all

Hi Maria, sorry for not state clearly. The issue is fixed when upgrade APL to B0 step, for details please refer to
Bug 92805 - [BXT-P APL] [Audio] Cannot refresh ELD information on the text mode and the UI mode.

close it as this is fixed on APL B0 stepping