[arch-general] Wireless LED stays on during suspend

[Matthew Monaco]

On 12/03/2011 05:26 PM, Karol Babioch wrote:
> Hi,
>
> I've recently installed Arch on my laptop and got a odd problem that I
> haven't encountered so far.
>
> Whenever I put my laptop into "Suspend to RAM" my wireless LED stays on,
> which is quite annoying. It probably doesn't use that much energy, but
> still I want to have nothing blinking, but the power LED.
>
> I investigated a little bit into it, and found out that the wireless LED
> stays on when at least one of the following devices is activated:
> Bluetooth, WWAN, Wireless LAN.
>
> This makes totally sense. As soon as blocking all three of these devices
> using rfkill, the LED turns off. I'm probably could now write a script
> that would get executed during "Suspend to RAM" using pm-utils.
>
> However before hacking around this, I would like to know what the
> expected way for this actually is. Doesn't a "Suspend to RAM" invoke
> rfkill at some point or at least shouldn't it try to disable such hardware?
>
> As I haven't experienced this issue with my former laptop, I'm not
> exactly sure whether this is a bug or a feature, so I'm glad about any
> input you give me on that.
>
> Best regards,
> Karol Babioch
>

I think new in 3.1 (might have been 3.0) was wireless wake-on-lan. You might be 
able to use ethtool to see if you have WOL enabled for your wireless card which 
would prevent it from being powered down.