# HP 530

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## Wireless

See Wireless network configuration#iwlegacy.

If `lspci -k` shows `Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev01)` the b43-firmware-classicAUR driver will work. See Broadcom wireless.

If `rfkill list all` shows your wireless as Hard blocked and the wireless button does not work a restore factory defaults in BIOS will remove the hard block.

## CPU Frequency Scaling

See the main CPU frequency scaling article.

## Sound and Headphones

If the speakers are not muted when headphones are plugged in, add this line to `/etc/modprobe.d/modprobe.conf`:

    options snd-hda-intel model=laptop

## To Do

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There are still a few things I would like to get working at some point so if anyone is reading this and has any suggestions I would love to hear them. :-) Most are pretty low priority/eye candy type stuff.

- I would like to have something like MacBooks where they "gradually" dim when idle as opposed to "entirely on" and "entirely off". I think that would come in handy when I just have my notebook open as a reference or something where I could still read it but not need it sitting there sucking my battery dry at full illumination.

     xbacklight -set 30 -time 60000  <--dim over a minute

- Anything to extend battery life. I have not really looked into it but I would like to find a way to scale the core voltage as well as frequency. I have seen Intel utilities that can do that on Windows desktops but nothing so far for Linux
- A way to kill the wireless card in software. This notebook comes with a button right by the power button to kill the wireless. It is not a big deal to hit the button I guess but it would be pretty neat if there was a way to simulate hitting the button in case I forget or I lose wireless connection for extended periods. I'm not even sure if this is possible or how it could be done, though.

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