Re: backlight mystery

[Dave Jones <davej@redhat.com>]

On Mon, Mar 05, 2007 at 11:30:37PM -0800, Andrew Morton wrote:
 > 
 > I always get stuff like this coming out when I boot my x86_64 machine:
 > 
 > asus_acpi: Unknown symbol backlight_device_unregister
 > asus_acpi: Unknown symbol backlight_device_register
 > ibm_acpi: Unknown symbol backlight_device_unregister
 > ibm_acpi: Unknown symbol backlight_device_register
 > toshiba_acpi: Unknown symbol backlight_device_unregister
 > toshiba_acpi: Unknown symbol backlight_device_register
 > video: Unknown symbol backlight_device_unregister
 > video: Unknown symbol backlight_device_register
 > 
 > This is a nocoma server, not a laptop.  I'm not sure how those modules are
 > even getting loaded.  The distro is FC4, which might be doing something
 > peculiar.  

I covered this on the list last week.  There's no way to
have a module autoload based on dmi strings or the like,
(Which is the only sane way these modules can determine
 if they need to run).

Given the absense of mechanism, there's a pretty gross hack
in Fedora's rc.sysinit which loads every module in drivers/acpi/*/*
that it finds.  Shameful I know.

	Dave

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