From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 110371] HP Dreamcolor display *Error* No EDID read Date: Wed, 10 Apr 2019 03:38:39 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0588926314==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id BBB748928F for ; Wed, 10 Apr 2019 03:38:39 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0588926314== Content-Type: multipart/alternative; boundary="15548675190.F3EE.23335" Content-Transfer-Encoding: 7bit --15548675190.F3EE.23335 Date: Wed, 10 Apr 2019 03:38:39 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D110371 Bug ID: 110371 Summary: HP Dreamcolor display *Error* No EDID read Product: DRI Version: unspecified Hardware: All OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: Babblebones@gmail.com My Tonga Firepro W7170M MXM GPU seems to have a bad reaction to kernels hig= her than Ubuntu's 4.18 on 18.10. I just tried a whole bunch of mainlines and Ubuntu 19.04 and nailed it down that any kernel higher than 4.18 is causing the GPU to no longer be able to= get the EDID of my dreamcolor IPS display. Not sure how to best go about bisecting this... It uses a colorboard to convert what I can only assume to be horizontal sig= nal and vertical signalling information to two separate channels of LVDS from a single eDP connector coming off the board. This results in the image shown on screen being completely unreadable with crazy scan wrapping from the channels getting mixed. May be related to: https://bugs.freedesktop.org/show_bug.cgi?id=3D108806 --=20 You are receiving this mail because: You are the assignee for the bug.= --15548675190.F3EE.23335 Date: Wed, 10 Apr 2019 03:38:39 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated
Bug ID 110371
Summary HP Dreamcolor display *Error* No EDID read
Product DRI
Version unspecified
Hardware All
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter Babblebones@gmail.com 

My Tonga Firepro W7170M MXM GPU seems to have a bad reaction t=
o kernels higher
than Ubuntu's 4.18 on 18.10.
I just tried a whole bunch of mainlines and Ubuntu 19.04 and nailed it down
that any kernel higher than 4.18 is causing the GPU to no longer be able to=
 get
the EDID of my dreamcolor IPS display.

Not sure how to best go about bisecting this...

It uses a colorboard to convert what I can only assume to be horizontal sig=
nal
and vertical signalling information to two separate channels of LVDS from a
single eDP connector coming off the board.

This results in the image shown on screen being completely unreadable with
crazy scan wrapping from the channels getting mixed.

May be related to: https://bugs.freedesktop.org/show_bug.=
cgi?id=3D108806

You are receiving this mail because:
  • You are the assignee for the bug.
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