From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 81382] Text console blanking does not go away Date: Wed, 10 Sep 2014 20:34:05 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1244788044==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 5F5AC89D89 for ; Wed, 10 Sep 2014 13:34:05 -0700 (PDT) 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 --===============1244788044== Content-Type: multipart/alternative; boundary="1410381245.d87ba2D0.22319"; charset="us-ascii" --1410381245.d87ba2D0.22319 Date: Wed, 10 Sep 2014 20:34:05 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=81382 --- Comment #8 from Daniel Kirsten --- The above patch causes a problem on my Amilo Xi 2550 (RadeonHD 2600). The behaviour for kernel-3.14.8-100.fc19 (without patch): The value of /sys/class/backlight/radeon_bl0/brightness is 0. Whenever I write something (0-255) to /sys/class/backlight/radeon_bl0/brightness, the backlight is turned off, and I am not able to turn on the backlight again. However, I can still shutdown the system (Ctr+Alt+Fx, login as root, and give a shutdown command. I can control the backlight by writing values 0-7 to /sys/class/backlight/acpi_video0/brightness. The behaviour for kernel-3.14.17-100.fc19 (with patch): The backlight is turned off during the boot up process, when the kernel switches into graphics mode. I commented out the lines 233-234 in drivers/gpu/drm/radeon/atombios_encoders.c, and then, the problem disappeared, i.e., the backlight stays on when the kernel switches into graphics mode. Best regards, Daniel -- You are receiving this mail because: You are the assignee for the bug. --1410381245.d87ba2D0.22319 Date: Wed, 10 Sep 2014 20:34:05 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 8 on bug 81382 from 
The above patch causes a problem on my Amilo Xi 2550 (RadeonHD 2600).

The behaviour for kernel-3.14.8-100.fc19 (without patch):

The value of /sys/class/backlight/radeon_bl0/brightness is 0. 
Whenever I write something (0-255) to 
/sys/class/backlight/radeon_bl0/brightness, 
the backlight is turned off, and I am not able to turn on the backlight again. 
However, I can still shutdown the system (Ctr+Alt+Fx, login as root, and give a 
shutdown command.

I can control the backlight by writing values 0-7 to
/sys/class/backlight/acpi_video0/brightness.

The behaviour for kernel-3.14.17-100.fc19 (with patch):

The backlight is turned off during the boot up process, when the kernel
switches into 
graphics mode.    
I commented out the lines 233-234 in
drivers/gpu/drm/radeon/atombios_encoders.c, 
and then, the problem disappeared, i.e., the backlight stays on when the kernel
switches 
into graphics mode.

Best regards,
Daniel

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