From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 107731] radeon (amdgpu) DisplayPort loss of max-resolution on DP monitor (after monitor power saving / idle) Date: Fri, 22 Mar 2019 17:28:27 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0273966335==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 6147B6E21A for ; Fri, 22 Mar 2019 17:28:27 +0000 (UTC) In-Reply-To: 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 --===============0273966335== Content-Type: multipart/alternative; boundary="15532757072.0A27.18494" Content-Transfer-Encoding: 7bit --15532757072.0A27.18494 Date: Fri, 22 Mar 2019 17:28:27 +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=3D107731 --- Comment #11 from L.S.S. --- So is there a possible workaround for monitors/KVMs that could cause this issue? Sadly for 4-port DisplayPort KVMs with working 4K@60 there are very = few alternatives... most are either only DP 1.1 or only 4K@30. Although I have to admit that this KVM (ATEN CS1924) is notoriously picky w= hen it comes to cables... only stock cables or some highly expensive DP1.4 cabl= es could make 4K@60 output work stable, but stock cables are only about 2m and= in reality I needed a few 3m cables (which cost me a handful to get the right cables for the job) as some of the PCs are placed a bit far away from the K= VM. --=20 You are receiving this mail because: You are the assignee for the bug.= --15532757072.0A27.18494 Date: Fri, 22 Mar 2019 17:28:27 +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

Comme= nt # 11 on bug 10773= 1 from L.S.S. 
So is there a possible workaround for monitors/KVMs that could=
 cause this
issue? Sadly for 4-port DisplayPort KVMs with working 4K@60 there are v=
ery few
alternatives... most are either only DP 1.1 or only 4K@30.

Although I have to admit that this KVM (ATEN CS1924) is notoriously picky w=
hen
it comes to cables... only stock cables or some highly expensive DP1.4 cabl=
es
could make 4K@60 output work stable, but stock cables are only about 2m=
 and in
reality I needed a few 3m cables (which cost me a handful to get the right
cables for the job) as some of the PCs are placed a bit far away from the K=
VM.

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