Disable built-in WiFi card so that USB WiFi device gets used --- systemctl?

Tue Jul 30 07:07:10 UTC 2013

On 30.07.2013 06:51, Rolf Turner wrote:
> On 30/07/13 14:45, poma wrote:
>> On 30.07.2013 00:03, Rolf Turner wrote:
>>> Thanks "poma" (???) and Harald.  It sounds like you may have solved my
>>> problem .... but I'm afraid that your advice is too cryptic for my poor
>>> feeble
>>> brain.  Can either of you (or someone else) spell out in tedious detail
>>> just
>>> what I need to do?  I cannot figure out whether things written in your
>>> messages
>>> are commands that I issue at the command line or lines that I need to
>>> insert
>>> into certain files.  And if so, which files?  I'm sure it's all obvious
>>> to you guys,
>>> but it leaves me floundering.
>>>
>>> Some specific questions:
>>>
>>> (1) "poma's" original posting referred to the directory /boot/extlinux
>>> and a file therein called extlinux.conf.  On my system there is no
>>> directory
>>> "extlinux" in /boot.  The only subdirectories of /boot are "efi", "grub"
>>> and
>>> "grub2".
>>>
>>> Should I create the directory /boot/extlinux and the file
>>> /boot/extlinux/extlinux.conf?
>>> Or is there some other incantation that I should invoke?
>>>
>>> (2) Likewise the original posting refers to <drivername>. How do I
>>> find/figure out
>>> the *name* of the driver associated with the internal WiFi card? This
>>> may sound
>>> clueless, but I guess I am clueless.
>>>
>>> (3) I did "man 7 dracut.cmdline" and found the reference to
>>> "rd.driver.blacklist"
>>> but I could not fathom what it was saying.
>>>
>>> (4) The original posting contains:
>>>> e.g.
>>>> /boot/extlinux/extlinux.conf
>>>> append … rd.driver.blacklist=<drivername>
>>> Is the line "append … rd.driver.blacklist=<drivername>" to be placed
>>> in the file /boot/extlinux/extlinux.conf?  (After I figure out what to
>>> substitute
>>> for "<drivername>" of course.) Are the three dots "..." literal? Or
>>> are are they a filler for something that I need to insert?  If so, what
>>> do I need to insert?  I haven't a clue!
>>>
>>> (5) I have found the file /boot/grub2/grub.cfg alright.  But it has a
>>> header
>>> saying "DO NOT EDIT THIS FILE".  It goes on to say:
>>>> # It is automatically generated by grub2-mkconfig using templates
>>>> # from /etc/grub.d and settings from /etc/default/grub
>>> So do I need to edit /etc/default/grub?  Or what?
>>>
>>> (6) In respect of "poma's" follow-up posting:  Do I create a file
>>> /etc/modprobe.d/blacklist.<modulename>.conf (after having figured
>>> out what "<modulename>" should be) and place in it the line:
>>>
>>>     blacklist <modulename>
>>>
>>> (again after having figured out what "<modulename>" should be) ?
>>>
>>> (7) In /etc/modprobe.d there is already a file called
>>> "blacklist.conf" in
>>> which there are many many lines such as:
>>>
>>>> # watchdog drivers
>>>> blacklist i8xx_tco
>>>>
>>>> # framebuffer drivers
>>>> blacklist aty128fb
>>>> blacklist atyfb
>>>> blacklist radeonfb
>>>> blacklist i810fb
>>>> blacklist cirrusfb
>>>       .........
>>>
>>> Could I just put "blacklist <modulename>" into that file?
>>>
>>> (8) "poma" says " However OP should upgrade, anyway."  I'm sure that
>>> I should.  But the thought terrifies me.  After all that I have read on
>>> this
>>> list recently about problems with Fedora 19, with fedup, with "yum
>>> upgrade".
>>> I have understood almost none of the discourse but it seems to indicate
>>> that upgrading is essentially impossible unless you *really* know
>>> what you
>>> are doing.  And I don't.
>>>
>>> Is there a simple (hah!) recipe by means of which I could upgrade?  E.g.
>>> could I just type
>>>
>>>      sudo fedup
>>>
>>> at the command line?  Or perhaps
>>>
>>>      sudo yum upgrade
>>>
>>> ???  If either would work, what are the implications of using the one
>>> rather
>>> than the other?
>>>
>>> Thanks for any insight.
>>>
>>>      cheers,
>>>
>>>          Rolf Turner
>>>
>>>
>> Step by step. ;)
>>
>> This is the hyperlink:
>> https://support.mozillamessaging.com/en-US/kb/reply-above-or-below-quoted-text
>>
>> Below quoted text, s'il vous plaît.
>>
>> This is the command - c/p into reply s'il vous plaît:
>> $ lspci -knn
>>
>>
>> poma
>>
> 
> Here we go.  (It is all Greek to me! :-) )
> 
>> 00:00.0 Host bridge [0600]: Intel Corporation Ivy Bridge DRAM
>> Controller [8086:0154] (rev 09)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>> 00:01.0 PCI bridge [0604]: Intel Corporation Ivy Bridge PCI Express
>> Root Port [8086:0151] (rev 09)
>>     Kernel driver in use: pcieport
>> 00:14.0 USB Controller [0c03]: Intel Corporation Panther Point USB
>> xHCI Host Controller [8086:1e31] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: xhci_hcd
>> 00:16.0 Communication controller [0780]: Intel Corporation Panther
>> Point MEI Controller #1 [8086:1e3a] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>> 00:1a.0 USB Controller [0c03]: Intel Corporation Panther Point USB
>> Enhanced Host Controller #2 [8086:1e2d] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: ehci_hcd
>> 00:1b.0 Audio device [0403]: Intel Corporation Panther Point High
>> Definition Audio Controller [8086:1e20] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb30]
>>     Kernel driver in use: snd_hda_intel
>> 00:1c.0 PCI bridge [0604]: Intel Corporation Panther Point PCI Express
>> Root Port 1 [8086:1e10] (rev c4)
>>     Kernel driver in use: pcieport
>> 00:1c.1 PCI bridge [0604]: Intel Corporation Panther Point PCI Express
>> Root Port 2 [8086:1e12] (rev c4)
>>     Kernel driver in use: pcieport
>> 00:1c.2 PCI bridge [0604]: Intel Corporation Panther Point PCI Express
>> Root Port 3 [8086:1e14] (rev c4)
>>     Kernel driver in use: pcieport
>> 00:1d.0 USB Controller [0c03]: Intel Corporation Panther Point USB
>> Enhanced Host Controller #1 [8086:1e26] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: ehci_hcd
>> 00:1f.0 ISA bridge [0601]: Intel Corporation Panther Point LPC
>> Controller [8086:1e59] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>> 00:1f.2 SATA controller [0106]: Intel Corporation Panther Point 6 port
>> SATA AHCI Controller [8086:1e03] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: ahci
>> 00:1f.3 SMBus [0c05]: Intel Corporation Panther Point SMBus Controller
>> [8086:1e22] (rev 04)
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>> 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Device
>> [1002:6840]
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: radeon
>> 01:00.1 Audio device [0403]: ATI Technologies Inc Device [1002:aa90]
>>     Subsystem: Toshiba America Info Systems Device [1179:fb31]
>>     Kernel driver in use: snd_hda_intel
>> 08:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd.
>> RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)
>>     Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:8212]
>>     Kernel driver in use: rtl8192ce
>> 09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
>> RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev
>> 07)
>>     Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:0123]
>>     Kernel driver in use: r8169
> 
> Hope it enables you to give me some insight.
> 
>     cheers,
> 
>         Rolf
> 
> 

This is the file - create it with your favorite text editor, as root:
/etc/modprobe.d/blacklist-rtl8192ce.conf

This is the command:
$ su -c "<TEXT EDITOR> /etc/modprobe.d/blacklist-rtl8192ce.conf"

e.g.
$ su -c "gedit /etc/modprobe.d/blacklist-rtl8192ce.conf"
Password: <ENTER HERE THE ROOT PASSWORD>

Then type the following line into the file:
blacklist rtl8192ce

Save and close.
$ su -c "init 6"

Finito.

poma