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

[poma]

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. ;)

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poma