From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 83460] New: [radeon regression] Backlight turned off since kernel upgrade Date: Wed, 03 Sep 2014 21:38:08 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1640851364==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id CA5176E609 for ; Wed, 3 Sep 2014 14:38:08 -0700 (PDT) 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 --===============1640851364== Content-Type: multipart/alternative; boundary="1409780288.5EA67ea60.25944"; charset="us-ascii" --1409780288.5EA67ea60.25944 Date: Wed, 3 Sep 2014 21:38:08 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=83460 Priority: medium Bug ID: 83460 Assignee: dri-devel@lists.freedesktop.org Summary: [radeon regression] Backlight turned off since kernel upgrade Severity: normal Classification: Unclassified OS: Linux (All) Reporter: spmf2004-freedesktop@yahoo.fr Hardware: x86-64 (AMD64) Status: NEW Version: XOrg CVS Component: DRM/Radeon Product: DRI Since the upgrade to Ubuntu kernel 3.13.0-35 (from 3.13.0-34), the screen is very dark to the point it's unusable. Backlight seems completely turned off. Using the brightness keys doesn't help. It was working fine with 3.13.0-34. I found that the offending patch is "drm/radeon: set default bl level to something reasonable". I reverted this patch and recompiled 3.13.0-35, and it solved the problem. I also checked that this problem also affects mainline kernel 3.17rc3. More technical details can be found on Ubuntu's bugtracker : https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1364148 -- You are receiving this mail because: You are the assignee for the bug. --1409780288.5EA67ea60.25944 Date: Wed, 3 Sep 2014 21:38:08 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Priority medium
Bug ID 83460
Assignee dri-devel@lists.freedesktop.org
Summary [radeon regression] Backlight turned off since kernel upgrade
Severity normal
Classification Unclassified
OS Linux (All)
Reporter spmf2004-freedesktop@yahoo.fr
Hardware x86-64 (AMD64)
Status NEW
Version XOrg CVS
Component DRM/Radeon
Product DRI 

Since the upgrade to Ubuntu kernel 3.13.0-35 (from 3.13.0-34), the screen is
very dark to the point it's unusable.
Backlight seems completely turned off. Using the brightness keys doesn't help.
It was working fine with 3.13.0-34.
I found that the offending patch is "drm/radeon: set default bl level to
something reasonable".
I reverted this patch and recompiled 3.13.0-35, and it solved the problem.
I also checked that this problem also affects mainline kernel 3.17rc3.
More technical details can be found on Ubuntu's bugtracker :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1364148

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