From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 110780] RX 580 and 5K displays, bandwidth validation failed with multiple monitors Date: Tue, 28 May 2019 08:30:23 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1538940038==" 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 9A0FE89C94 for ; Tue, 28 May 2019 08:30:23 +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 --===============1538940038== Content-Type: multipart/alternative; boundary="15590322231.aFDF3.22557" Content-Transfer-Encoding: 7bit --15590322231.aFDF3.22557 Date: Tue, 28 May 2019 08:30:23 +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=3D110780 Bug ID: 110780 Summary: RX 580 and 5K displays, bandwidth validation failed with multiple monitors Product: DRI Version: unspecified Hardware: All OS: Linux (All) Status: NEW Severity: major Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: linuzel@gmail.com I have been facing an issue with my 5K display (iiyama ProLite XB2779QQS-S1= ). It works fine as long as it is the only active monitor, as soon as I activa= te another monitor the main one (5k) can't display more than 4k. Debug using "echo 0x4 > /sys/module/drm/parameters/debug" show this : mai 23 09:01:22 bureau-gael /usr/lib/gdm3/gdm-x-session[3465]: (EE) AMDGPU(= 0): failed to set mode: Invalid argument mai 23 09:01:22 bureau-gael kernel: [drm:dce112_validate_bandwidth [amdgpu]] dce112_validate_bandwidth: Bandwidth validation failed! I disabled the check by forcing is_display_configuration_supported to return true in dce_calcs.c and it works fine. I tried a lot of kernel (includig drm-tip and 5.2-rc1) and they all have the same issue. My custom kernel with no validation is based on Ubuntu's 5.0.0-15-generic. If I can help by providing more logs or test something ask and I will do my best. --=20 You are receiving this mail because: You are the assignee for the bug.= --15590322231.aFDF3.22557 Date: Tue, 28 May 2019 08:30:23 +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 110780
Summary RX 580 and 5K displays, bandwidth validation failed with mult= iple monitors
Product DRI
Version unspecified
Hardware All
OS Linux (All)
Status NEW
Severity major
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter linuzel@gmail.com 

I have been facing an issue with my 5K display (iiyama ProLite=
 XB2779QQS-S1).

It works fine as long as it is the only active monitor, as soon as I activa=
te
another monitor the main one (5k) can't display more than 4k.

Debug using "echo 0x4 > /sys/module/drm/parameters/debug" show=
 this :
mai 23 09:01:22 bureau-gael /usr/lib/gdm3/gdm-x-session[3465]: (EE) AMDGPU(=
0):
failed to set mode: Invalid argument
mai 23 09:01:22 bureau-gael kernel: [drm:dce112_validate_bandwidth [amdgpu]]
dce112_validate_bandwidth: Bandwidth validation failed!

I disabled the check by forcing is_display_configuration_supported to return
true in dce_calcs.c and it works fine.

I tried a lot of kernel (includig drm-tip and 5.2-rc1) and they all have the
same issue.
My custom kernel with no validation is based on Ubuntu's 5.0.0-15-generic.

If I can help by providing more logs or test something ask and I will do my
best.

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