Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759281AbdCVPHx (ORCPT ); Wed, 22 Mar 2017 11:07:53 -0400 Received: from mail-it0-f48.google.com ([209.85.214.48]:37309 "EHLO mail-it0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935232AbdCVPHm (ORCPT ); Wed, 22 Mar 2017 11:07:42 -0400 From: Tim Gardner To: linux-kernel@vger.kernel.org Cc: Tim Gardner , Greg Kroah-Hartman , Jiri Slaby , Adam Borowski , Scot Doyle Subject: [PATCH linux-next V2] tty: Disable default console blanking interval Date: Wed, 22 Mar 2017 09:07:20 -0600 Message-Id: <1490195240-16372-1-git-send-email-tim.gardner@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1490190632-10464-1-git-send-email-tim.gardner@canonical.com> References: <1490190632-10464-1-git-send-email-tim.gardner@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1426 Lines: 41 BugLink: http://bugs.launchpad.net/bugs/869017 Console blanking is not enabling DPMS power saving (thereby negating any power-saving benefit), and is simply turning the screen content blank. This means that any crash output is invisible which is unhelpful on a server (virtual or otherwise). Furthermore, CRT burn in concerns should no longer govern the default case. Affected users could always set consoleblank on the kernel command line. Signed-off-by: Tim Gardner Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: Adam Borowski Cc: Scot Doyle --- I'm not particularly knowledgable about console issues. Is a blaknking interval relevant in a post CRT world ? The argument in the bug description seems compelling. V2 - expanded commit log with relevant context. drivers/tty/vt/vt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 5c4933b..9c99452 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -181,7 +181,7 @@ int console_blanked; static int vesa_blank_mode; /* 0:none 1:suspendV 2:suspendH 3:powerdown */ static int vesa_off_interval; -static int blankinterval = 10*60; +static int blankinterval; core_param(consoleblank, blankinterval, int, 0444); static DECLARE_WORK(console_work, console_callback); -- 2.7.4