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: Tue, 21 Apr 2015 20:05:52 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1068266378==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 42FA76E1B5 for ; Tue, 21 Apr 2015 13:05:52 -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 --===============1068266378== Content-Type: multipart/alternative; boundary="1429646752.C55C7b0.27377"; charset="UTF-8" --1429646752.C55C7b0.27377 Date: Tue, 21 Apr 2015 20:05:52 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable https://bugs.freedesktop.org/show_bug.cgi?id=3D81382 --- Comment #34 from Christophe Migliorini --- Hi, it took me quite some time to get here, but hopefully you can still sol= ve my problem. I'm running a 2006 Intel iMac (Core Duo) under Unbuntu 12.04LTS server, whi= ch sits on my desk and almost never log to the console, which would normally go blank a few minutes after boot. There is strong evidence that this patch found its way to my "stock" kernel back in september 2014, and since then my iMac exhibits the following behav= iour after boot: - whenever the console blanking activates, backlight goes to MAX (with my L= CD screen going all strange and overheating =E2=80=94 even causing fans to blo= w) - only way out is to echo 0 > /sys/class/backlight/radeon_bl0/brightness = =E2=80=94 which I 'crontabbed' but is not exactly satisfactory. - any other value causes the backlight to go all the way up and overheat. I did try to "echo 1 > /sys/class/backlight/acpi_video0/brightness" today, = and that caused the iMac to reboot. I have not experimented anything else, but would be happy to help. uname is "Linux xxx 3.13.0-49-generic #81~precise1-Ubuntu SMP Wed Mar 25 16:32:40 UTC 2015 i686 i686 i386 GNU/Linux" --=20 You are receiving this mail because: You are the assignee for the bug. --1429646752.C55C7b0.27377 Date: Tue, 21 Apr 2015 20:05:52 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Commen= t # 34 on bug 81382<= /a> from Christophe Migliorini 
Hi, it took me quite some time to get here, but hopefully you =
can still solve
my problem.
I'm running a 2006 Intel iMac (Core Duo) under Unbuntu 12.04LTS server, whi=
ch
sits on my desk and almost never log to the console, which would normally go
blank a few minutes after boot.

There is strong evidence that this patch found its way to my "stock&qu=
ot; kernel
back in september 2014, and since then my iMac exhibits the following behav=
iour
after boot:
- whenever the console blanking activates, backlight goes to MAX (with my L=
CD
screen going all strange and overheating =E2=80=94 even causing fans to blo=
w)
- only way out is to echo 0 > /sys/class/backlight/radeon_bl0/brightness=
 =E2=80=94
which I 'crontabbed' but is not exactly satisfactory.
- any other value causes the backlight to go all the way up and overheat.

I did try to "echo 1 > /sys/class/backlight/acpi_video0/brightness&=
quot; today, and
that caused the iMac to reboot.

I have not experimented anything else, but would be happy to help.

uname is "Linux xxx 3.13.0-49-generic #81~precise1-Ubuntu SMP Wed Mar =
25
16:32:40 UTC 2015 i686 i686 i386 GNU/Linux"

You are receiving this mail because: =20=20=20=20=20=20
  • You are the assignee for the bug.
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