From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 109384] Bad DisplayPort enumeration and wrong refresh rate with Hawaii chip Date: Fri, 18 Jan 2019 18:38:16 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0266886562==" 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 B58276F8AA for ; Fri, 18 Jan 2019 18:38:16 +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 --===============0266886562== Content-Type: multipart/alternative; boundary="15478366960.f342F.6223" Content-Transfer-Encoding: 7bit --15478366960.f342F.6223 Date: Fri, 18 Jan 2019 18:38:16 +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=3D109384 Bug ID: 109384 Summary: Bad DisplayPort enumeration and wrong refresh rate with Hawaii chip Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: fabio0x@keemail.me Created attachment 143150 --> https://bugs.freedesktop.org/attachment.cgi?id=3D143150&action=3Dedit Xorg.0 log with DC off I'm running Solus KDE with kernel 4.20.2 but I've had these issues since ke= rnel 4.19. Here's the list of issues with AMDGPU DC enabled: - With Solus' default kernel flags I have wrong DisplayPort enumeration, meaning that I get DisplayPort-1 when I turn on the computer, and then DisplayPort-2 when I get my monitor to sleep and then I wake it up. - If I put my computer on sleep (suspension) and then wake it up, I cannot = set a usable refresh rate. This means I actually get 40 Hz when I set 60, and 4= 5 Hz when I set 74 (yeah, I have a bit of screen "overclocking". That's how I fo= und DisplayPort enumeration is wrong). - I get microstuttering, particularly noticeable when I drag windows around. Now, all these issues are non existant if I set the amdgpu.dc=3D0 kernel fl= ag. Also, DisplayPort number is DisplayPort-0 under any circumstances. =E2=9D=AF inxi -G Graphics: Device-1: AMD Hawaii PRO [Radeon R9 290/390] driver: amdgpu v: kernel=20 Display: x11 server: X.Org 1.20.3 driver: amdgpu,ati unloaded: fbdev,modesetting,vesa=20 resolution: 1920x1080~60Hz=20 OpenGL:=20 renderer: AMD Radeon R9 200 Series (HAWAII DRM 3.27.0 4.20.2-107.current LLVM 7.0.0)=20 v: 4.5 Mesa 18.3.1 --=20 You are receiving this mail because: You are the assignee for the bug.= --15478366960.f342F.6223 Date: Fri, 18 Jan 2019 18:38:16 +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 109384
Summary Bad DisplayPort enumeration and wrong refresh rate with Hawai= i chip
Product DRI
Version DRI git
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter fabio0x@keemail.me 

Created attachment 143150=
 [details]
Xorg.0 log with DC off

I'm running Solus KDE with kernel 4.20.2 but I've had these issues since ke=
rnel
4.19. Here's the list of issues with AMDGPU DC enabled:
- With Solus' default kernel flags I have wrong DisplayPort enumeration,
meaning that I get DisplayPort-1 when I turn on the computer, and then
DisplayPort-2 when I get my monitor to sleep and then I wake it up.
- If I put my computer on sleep (suspension) and then wake it up, I cannot =
set
a usable refresh rate. This means I actually get 40 Hz when I set 60, and 4=
5 Hz
when I set 74 (yeah, I have a bit of screen "overclocking". That'=
s how I found
DisplayPort enumeration is wrong).
- I get microstuttering, particularly noticeable when I drag windows around.

Now, all these issues are non existant if I set the amdgpu.dc=3D0 kernel fl=
ag.
Also, DisplayPort number is DisplayPort-0 under any circumstances.

=E2=9D=AF inxi -G
Graphics:  Device-1: AMD Hawaii PRO [Radeon R9 290/390] driver: amdgpu v:
kernel=20
           Display: x11 server: X.Org 1.20.3 driver: amdgpu,ati unloaded:
fbdev,modesetting,vesa=20
           resolution: 1920x1080~60Hz=20
           OpenGL:=20
           renderer: AMD Radeon R9 200 Series (HAWAII DRM 3.27.0
4.20.2-107.current LLVM 7.0.0)=20
           v: 4.5 Mesa 18.3.1

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