From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 59431] [snb efi gmux] imac 12,1 blank screen upon booting Date: Thu, 31 Jan 2013 10:59:50 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1218382381==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 76593E6B75 for ; Thu, 31 Jan 2013 02:59:50 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1218382381== Content-Type: multipart/alternative; boundary="1359629990.6e5c5b0.7439"; charset="us-ascii" --1359629990.6e5c5b0.7439 Date: Thu, 31 Jan 2013 10:59:50 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=59431 --- Comment #46 from Vladimir --- I found the exact commit that causes this bug http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-quantal.git;a=commit;h=8f53b5444a25b5be3bfe0164316f9bc7845279c9 drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2) BugLink: http://bugs.launchpad.net/bugs/1091251 commit 62444b7462a2b98bc78d68736c03a7c4e66ba7e2 upstream. - Stop the displays from accessing the FB - Block CPU access - Turn off MC client access This should fix issues some users have seen, especially with UEFI, when changing the MC FB location that result in hangs or display corruption. v2: fix crtc enabled check noticed by Luca Tettamanti Signed-off-by: Alex Deucher [ herton: adjust context ] Signed-off-by: Herton Ronaldo Krzesinski Hope you guys can fix it -- You are receiving this mail because: You are the assignee for the bug. --1359629990.6e5c5b0.7439 Date: Thu, 31 Jan 2013 10:59:50 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 46 on bug 59431 from 
I found the exact commit that causes this bug

http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-quantal.git;a=commit;h=8f53b5444a25b5be3bfe0164316f9bc7845279c9

drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2)

BugLink: http://bugs.launchpad.net/bugs/1091251

commit 62444b7462a2b98bc78d68736c03a7c4e66ba7e2 upstream.

- Stop the displays from accessing the FB
- Block CPU access
- Turn off MC client access

This should fix issues some users have seen, especially
with UEFI, when changing the MC FB location that result
in hangs or display corruption.

v2: fix crtc enabled check noticed by Luca Tettamanti

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ herton: adjust context ]
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>

Hope you guys can fix it

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