From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 107393] 4.18.0-rc6 amdgpu framebuffer problems with DisplayPort Date: Fri, 27 Jul 2018 07:48:45 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1103970078==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 684BC6E91F for ; Fri, 27 Jul 2018 07:48:45 +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 --===============1103970078== Content-Type: multipart/alternative; boundary="15326777250.aAA68E.24420" Content-Transfer-Encoding: 7bit --15326777250.aAA68E.24420 Date: Fri, 27 Jul 2018 07:48:45 +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=3D107393 Bug ID: 107393 Summary: 4.18.0-rc6 amdgpu framebuffer problems with DisplayPort Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: lkd-fdo@sky-haven.net Created attachment 140848 --> https://bugs.freedesktop.org/attachment.cgi?id=3D140848&action=3Dedit combined kernel dmesg for two boot sessions, one in 4.17.0 and the other in 4.18.0-rc6 On kernel 4.17.0, amdgpudrmfb functions correctly; taking the fb from efifb On kernel 4.18.0-rc6 (and previous), the framebuffer proper doesn't start; monitor doesn't get a valid display signal. If I log in and blind-start a Wayland compositor (sway in my case), the display gets a desktop and things work normally. Once I exit out back to FB, the display is blanked. Everything works normally if I connect the monitor with HDMI instead. This was a problem with 4.18.0-rc5 as well. I was pointed to the patch at https://lists.freedesktop.org/archives/amd-gfx/2018-July/023920.html and applied it to 4.18.0-rc5, but it had no effect on behavior. GPU: Vega64 Monitor: Acer XR341CK --=20 You are receiving this mail because: You are the assignee for the bug.= --15326777250.aAA68E.24420 Date: Fri, 27 Jul 2018 07:48:45 +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 107393
Summary 4.18.0-rc6 amdgpu framebuffer problems with DisplayPort
Product DRI
Version unspecified
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter lkd-fdo@sky-haven.net 

Created attachment 140848 [d=
etails]
combined kernel dmesg for two boot sessions, one in 4.17.0 and the other in
4.18.0-rc6

On kernel 4.17.0, amdgpudrmfb functions correctly; taking the fb from efifb

On kernel 4.18.0-rc6 (and previous), the framebuffer proper doesn't start;
monitor doesn't get a valid display signal. If I log in and blind-start a
Wayland compositor (sway in my case), the display gets a desktop and things
work normally. Once I exit out back to FB, the display is blanked.

Everything works normally if I connect the monitor with HDMI instead.

This was a problem with 4.18.0-rc5 as well. I was pointed to the patch at
https://lists.freedesktop.org/archives/amd-gfx/2018-July/023920.html<=
/a> and
applied it to 4.18.0-rc5, but it had no effect on behavior.

GPU: Vega64
Monitor: Acer XR341CK

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