RE: [gentoo-user] Having Trouble with Wireless Interface

[Hunter Jozwiak]

-----Original Message-----
From: Alexander Kapshuk [mailto:alexander.kapshuk@×××××.com] 
Sent: Tuesday, May 13, 2014 8:20 AM
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Having Trouble with Wireless Interface

On 05/13/2014 02:45 PM, Hunter Jozwiak wrote:
>
> -----Original Message-----
> From: Alexander Kapshuk [mailto:alexander.kapshuk@×××××.com]
> Sent: Tuesday, May 13, 2014 7:00 AM
> To: gentoo-user@l.g.o
> Subject: Re: [gentoo-user] Having Trouble with Wireless Interface
>
> On 05/12/2014 10:31 PM, Hunter Jozwiak wrote:
>> Hi all. I got Espeakup to finally function, but I have a problem now
>> with my Realtech 8188 WiFi adapter, Rev01, according to ifconfig. I
>> know it shows up as wlp7s0 on an ifconfig, normally. But for what
>> ever reason, it isn't showing up. I have, in my /etc/conf.d/net the line:
>> wlp7s0="DHCP". When I run ifconfig wlp7s0 up, I get an error about
>> how the device is not able to be found. The driver shows up as a
>> module in the kernel.
>>
> I use wpa_supplicant to manage my wireless connections.
> Here's what I have in my /etc/conf.d/net:
> # Prefer wpa_supplicant over wireless-tools modules="wpa_supplicant"
>
> wpa_supplicant_wlp2s0="-Dnl80211"
>
> And the output of lspci:
> 02:00.0 Ethernet controller: Qualcomm Atheros AR242x / AR542x Wireless
> Network Adapter (PCI-Express) (rev 01)
>     Subsystem: Hewlett-Packard Company Device 137b
>     Flags: bus master, fast devsel, latency 0, IRQ 16
>     Memory at d6000000 (64-bit, non-prefetchable) [size=64K]
>     Capabilities: [40] Power Management version 2
>     Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
>     Capabilities: [60] Express Legacy Endpoint, MSI 00
>     Capabilities: [90] MSI-X: Enable- Count=1 Masked-
>     Capabilities: [100] Advanced Error Reporting
>     Capabilities: [140] Virtual Channel
>     Kernel driver in use: ath5k
>     Kernel modules: ath5k
>
> Are you setting up wireless after doing a fresh install, or did you
> have it working before and then it just stopped working for you?
>
> This is fresh. And genkernel doesn't show RTL8188CE in the staging
drivers.
> It shows drivers with uffixes U and Eu, but not the CE driver.
>
>
Looks like the kernel driver for your wireless NIC is RTL8192CE
---------------------------------------------------------------------
/usr/src/linux/drivers/net/wireless/rtlwifi/Kconfig:12,22
config RTL8192CE
    tristate "Realtek RTL8192CE/RTL8188CE Wireless Network Adapter"
    depends on PCI
    select RTL8192C_COMMON
    select RTLWIFI
    select RTLWIFI_PCI
    ---help---
    This is the driver for Realtek RTL8192CE/RTL8188CE 802.11n PCIe
    wireless network adapters.

    If you choose to build it as a module, it will be called rtl8192ce
---------------------------------------------------------------------
If you like to check if RTL8192CE is enabled in  your kernel's .config file.
If it isn't, you probably want to compile it as a module, and then add
rtl8192ce to /etc/conf.d/modules as well.

Oddly enough, I had a few other CONFIG modules not included, namely
CONFIG_80211. But, when I activated it, my kernel got bricked, and on
reboot, I got dumped in some prompt that said that the system couldn't find
a root and I should press Enter to continue, Q to skip, and something else
would give me a shell. I just did a genkernel --menuconfig kernel and built
in the modules, the compile went smooth, and I made no other changes. But
now, like I've mentioned, I've got a bricked kernel.