From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 111122] 2500U: Graphics corruption on kernel 5.2 Date: Mon, 26 Aug 2019 18:27:02 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0990735195==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 831546E29D for ; Mon, 26 Aug 2019 18:27:02 +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 --===============0990735195== Content-Type: multipart/alternative; boundary="15668440224.95cFd.6110" Content-Transfer-Encoding: 7bit --15668440224.95cFd.6110 Date: Mon, 26 Aug 2019 18:27:02 +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=3D111122 --- Comment #26 from Matt D. --- Created attachment 145172 --> https://bugs.freedesktop.org/attachment.cgi?id=3D145172&action=3Dedit amd_fix.sh I've been having a problem with display corruption on Fedora using recent updates. Here is my report on their bug tracker: https://bugzilla.redhat.com/show_bug.cgi?id=3D1745380 I can confirm that when compiz is enabled, the system will lock up when it's started. Adding "iommu=3Dpt" to the kernel flags in grub2 will allow the sy= stem to boot without freezing but the display is still corrupt. Adding "AMD_DEBUG=3Dnodcc" to the environment provides a complete workaround (without the need for the kernel flag). I've attached a file "amd_fix.sh" which if placed in /etc/profile.d/ will provide a workaround until this can be fixed in the kernel or wherever the problem is. --=20 You are receiving this mail because: You are the assignee for the bug.= --15668440224.95cFd.6110 Date: Mon, 26 Aug 2019 18:27:02 +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 # 26 on bug 11112= 2 from Matt D. 
Created attachment 145172 [det=
ails]
amd_fix.sh

I've been having a problem with display corruption on Fedora using recent
updates. Here is my report on their bug tracker:

https://b=
ugzilla.redhat.com/show_bug.cgi?id=3D1745380

I can confirm that when compiz is enabled, the system will lock up when it's
started. Adding "iommu=3Dpt" to the kernel flags in grub2 will al=
low the system
to boot without freezing but the display is still corrupt.

Adding "AMD_DEBUG=3Dnodcc" to the environment provides a complete=
 workaround
(without the need for the kernel flag).

I've attached a file "amd_fix.sh" which if placed in /etc/profile=
.d/ will
provide a workaround until this can be fixed in the kernel or wherever the
problem is.

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