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

[Alexander Kapshuk]

On 05/13/2014 04:53 PM, Alexander Kapshuk wrote:
> On 05/13/2014 04:25 PM, Hunter Jozwiak wrote:
>> -----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.
>>
>>
> Did your genkernel boot OK, before you enabled 'CONFIG_.*80211'?
> What output does the command line shown below return?
> grep '^CONFIG.*80211.*=[nmy]' /usr/src/linux/.config
> Here's what I get on my system:
> CONFIG_CFG80211=y
> CONFIG_CFG80211_DEFAULT_PS=y
> CONFIG_MAC80211=y
> CONFIG_MAC80211_HAS_RC=y
> CONFIG_MAC80211_RC_MINSTREL=y
> CONFIG_MAC80211_RC_MINSTREL_HT=y
> CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
> CONFIG_MAC80211_LEDS=y
>
> I assume you also ran 'genkernel all' after running 'genkernel
> --menuconfig', didn't you?
>
> What's the contents of your /etc/conf.d/modules?
>
> /etc/fstab?
>
> and what's the output of 'mount|grep ^/dev'?
>
>
While I do not use genkernel myself, I thought you might want to take a
look at this wiki article, http://wiki.gentoo.org/wiki/Genkernel, as a
way to retrace your steps and hopefully find what's got amiss.