Messages in this thread Patch in this message | | | From | Tim Gardner <> | Subject | [PATCH linux-next V2] tty: Disable default console blanking interval | Date | Wed, 22 Mar 2017 09:07:20 -0600 |
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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 <tim.gardner@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: Adam Borowski <kilobyte@angband.pl> Cc: Scot Doyle <lkml14@scotdoyle.com> ---
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
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