From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 93826] 2560x1440 @144Hz graphic glitches and bad refresh rate Date: Wed, 21 Jun 2017 19:38:13 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1721829469==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id BF4C489016 for ; Wed, 21 Jun 2017 19:38:13 +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 --===============1721829469== Content-Type: multipart/alternative; boundary="14980738930.A7ce5b65.16724"; charset="UTF-8" --14980738930.A7ce5b65.16724 Date: Wed, 21 Jun 2017 19:38:13 +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=3D93826 --- Comment #74 from kees.aarts1@hotmail.com --- I have come here since my first git bisect learned me that commit 09be4a5219610a6fae3215d4f51f948d6f5d2609 causes problems on my system. I ha= ve a RX 460 and LG 38UC99-W and 3840x1600 @ 60hz gives no problem Running at 75hz (freesync) worked fine on 4.12-rc2 (I used 4.12 since at 4.= 11 or lower I could not use the displayport at all and was limited to 30hz via hdmi). But rc3 and up gave me flickering at the lowest +-7cm of the screen = if something changes on the screen. A git bisect brought me to the commit mentioned above. echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level fixes the problem on 4.12-rc6 echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level also fixes the problem (did not expect that) echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level gives flickering.. --=20 You are receiving this mail because: You are the assignee for the bug.= --14980738930.A7ce5b65.16724 Date: Wed, 21 Jun 2017 19:38:13 +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

Commen= t # 74 on bug 93826<= /a> from kees.aar= ts1@hotmail.com 
I have come here since my first git bisect learned me that com=
mit
09be4a5219610a6fae3215d4f51f948d6f5d2609 causes problems on my system. I ha=
ve a
RX 460 and LG 38UC99-W and 3840x1600 @ 60hz gives no problem

Running at 75hz (freesync) worked fine on 4.12-rc2 (I used 4.12 since at 4.=
11
or lower I could not use the displayport at all and was limited to 30hz via
hdmi). But rc3 and up gave me flickering at the lowest +-7cm of the screen =
if
something changes on the screen. A git bisect brought me to the commit
mentioned above.

echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
fixes the problem on 4.12-rc6
echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
also fixes the problem (did not expect that)
echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level
gives flickering..

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