From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 111876] AMD 5700 XT / Navi - BenQ XL2420G - No EDID read with DP connector, HDMI works fine Date: Tue, 01 Oct 2019 14:11:22 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1074203513==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 2B3B36E0BA for ; Tue, 1 Oct 2019 14:11:22 +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 --===============1074203513== Content-Type: multipart/alternative; boundary="15699390820.Cc5A2ee.790" Content-Transfer-Encoding: 7bit --15699390820.Cc5A2ee.790 Date: Tue, 1 Oct 2019 14:11:22 +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=3D111876 Bug ID: 111876 Summary: AMD 5700 XT / Navi - BenQ XL2420G - No EDID read with DP connector, HDMI works fine Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: not set Priority: not set Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: christopherjordan87@gmail.com Created attachment 145598 --> https://bugs.freedesktop.org/attachment.cgi?id=3D145598&action=3Dedit dmesg output when using DP I recently built a new machine (specs below), but I'm having trouble using = the display port connector with my old monitor (BenQ XL2420G) - I get the follo= wing EDID error: [drm:dc_link_detect [amdgpu]] *ERROR* No EDID read. Following instructions to manually use an EDID appears to do nothing (https://wiki.archlinux.org/index.php/kernel_mode_setting). I generated an = EDID with the "read-edid" package after modprobe-ing i2c-dev and HDMI connected,= as well as my old machine's nvidia card via "acquire EDID" in nvidia-settings. I'm not sure how quirky other G-Sync or high-refresh-rate monitors are, but this one *only* allows a 144 Hz refresh rate with display port. However, us= ing HDMI, everything appears to be fine. My Windows partition in the same machi= ne appears quite happy to use DP at 144 Hz, so I'm particularly baffled as to = why linux is struggling. After scouring the internet, it appears no one else has the same issue, so it is possible that this monitor is simply not playing nicely. I have supplied my lspci output, as well as dmesg outputs with "drm.debug= =3D0x1e log_buf_len=3D4M" for both DP and HDMI connected. I am running up-to-date archlinux, using linux-firmware from the testing repo (which should just be neatly providing the navi firmware in a non-AUR package) and a bunch of packages from the mesa-git repo. My pacman -Q is also attached. Any help would be greatly appreciated! Many thanks in advance. ASUS TUF Gaming X570-PLUS WiFi AMD Ryzen 3900X Powercolor Red Devil 5700 XT --=20 You are receiving this mail because: You are the assignee for the bug.= --15699390820.Cc5A2ee.790 Date: Tue, 1 Oct 2019 14:11:22 +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 111876
Summary AMD 5700 XT / Navi - BenQ XL2420G - No EDID read with DP conn= ector, HDMI works fine
Product DRI
Version DRI git
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity not set
Priority not set
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter christopherjordan87@gmail.com 

Created attachment 14=
5598 [details]
dmesg output when using DP

I recently built a new machine (specs below), but I'm having trouble using =
the
display port connector with my old monitor (BenQ XL2420G) - I get the follo=
wing
EDID error:

[drm:dc_link_detect [amdgpu]] *ERROR* No EDID read.

Following instructions to manually use an EDID appears to do nothing
(https=
://wiki.archlinux.org/index.php/kernel_mode_setting). I generated an ED=
ID
with the "read-edid" package after modprobe-ing i2c-dev and HDMI =
connected, as
well as my old machine's nvidia card via "acquire EDID" in nvidia=
-settings.

I'm not sure how quirky other G-Sync or high-refresh-rate monitors are, but
this one *only* allows a 144 Hz refresh rate with display port. However, us=
ing
HDMI, everything appears to be fine. My Windows partition in the same machi=
ne
appears quite happy to use DP at 144 Hz, so I'm particularly baffled as to =
why
linux is struggling. After scouring the internet, it appears no one else has
the same issue, so it is possible that this monitor is simply not playing
nicely.

I have supplied my lspci output, as well as dmesg outputs with "drm.de=
bug=3D0x1e
log_buf_len=3D4M" for both DP and HDMI connected. I am running up-to-d=
ate
archlinux, using linux-firmware from the testing repo (which should just be
neatly providing the navi firmware in a non-AUR package) and a bunch of
packages from the mesa-git repo. My pacman -Q is also attached.

Any help would be greatly appreciated! Many thanks in advance.

ASUS TUF Gaming X570-PLUS WiFi
AMD Ryzen 3900X
Powercolor Red Devil 5700 XT

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