Fw: [Bugme-new] [Bug 4767] New: RFE: console_blank_hook that can call userspace program

Fw: [Bugme-new] [Bug 4767] New: RFE: console_blank_hook that can call userspace program

[Andrew Morton]

Begin forwarded message:

Date: Mon, 20 Jun 2005 03:37:22 -0700
From: bugme-daemon@kernel-bugs.osdl.org
To: bugme-new@lists.osdl.org
Subject: [Bugme-new] [Bug 4767] New: RFE: console_blank_hook that can call userspace program


http://bugzilla.kernel.org/show_bug.cgi?id=4767

           Summary: RFE: console_blank_hook that can call userspace program
    Kernel Version: 2.6.12
            Status: NEW
          Severity: normal
             Owner: jsimmons@infradead.org
         Submitter: heilong@bluebottle.com


I think it'd be very good to have a console_blank_hook handler that would call a
userspace program/script/generate hotplug event whatever. Currently, the console
can only be blanked using APM, so no options exist for people using ACPI. I've
got a Radeon graphics chip on my laptop, and the LCD backlight can be controlled
(on/off) using radeontool. If there was a userspace callback interface to
console blanking, I would just make a callback script that calls "radeontool
light off" on blank and "radeontool light on" on unblank - really easy. I think
this userspace console_blank_hook handler is very simple to put into kernel, but
I'm not a kernel developer myself, so wouldn't risk sending any patches (that
call system("some_script")), because I probably won't make things as they should
be in the kernel.

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