05-26-2015
It may not be possible to fix a buggy driver by fiddling with a buggy driver. The problem may be the driver itself. A kernel upgrade might help or might not, but would be rather drastic.
It's quite possible the problem is specific to your model of laptop, as well. Manufacturers have a choice of how they attach the wiring to the wireless adaptor, and put whatever workarounds they need into the Windows driver, and Linux has to find out the difference the hard way. (This is why laptop hardware so often has its own particular drivers instead of using the manufacturer's generic ones.) Search for discussions on your exact laptop model.
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LEARN ABOUT DEBIAN
acpi_sony
ACPI_SONY(4) BSD/i386 Kernel Interfaces Manual ACPI_SONY(4)
NAME
acpi_sony -- ACPI notebook controller driver for Sony laptops
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device acpi_sony
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
acpi_sony_load="YES"
DESCRIPTION
The acpi_sony driver provides support for the notebook controller in Sony laptops. Note that not all features will work on all laptop mod-
els.
SYSCTLS
The following sysctl nodes are currently implemented:
dev.acpi_sony.0.brightness
Current brightness level of the display.
dev.acpi_sony.0.brightness_default
Default brightness level of the display (survives reboot).
dev.acpi_sony.0.contrast
Current contrast level of the display.
dev.acpi_sony.0.bass_gain
Enable or disable the Bass Gain feature.
dev.acpi_sony.0.cdp
Turns the CD power on or off.
dev.acpi_sony.0.azp
Turns the audio power on or off.
dev.acpi_sony.0.lnp
Turns the wired network interface power on or off.
SEE ALSO
acpi(4), sysctl(8)
HISTORY
The acpi_sony driver first appeared in FreeBSD 6.0.
AUTHORS
The acpi_sony driver was written by Takanori Watanabe <takawata@FreeBSD.org>.
BSD
February 7, 2010 BSD