[colug-432] kmod vs akmod nvidia

[Vince Herried]

Rick: The kmod-nvidia was indeed installed  in the RPM database by akmod
magic at boot time.  Unless yum uses a different database than the rpm
tool,  find that hard to imagine.

recap I:
yum erase kmod-nvidia
yum install akmod-nvidia
reboot ( multiple s :)
discovered missing kernel-PAE-devel thus X not happy.
yum install kernel-PAE-devel
reboot X comes up.
test yum update suggests updates for kmod-nvidia???
since I had yum erase kmod-nvidia*  prior to the boot, was surprised it
wanted to update kmod-nvidia.
did yet  another yum erase kmod-nvidia* which is where I see the message
RPMDB was updated by some one other than yum.
run yum update which installed new kernel ( and more, chuff ).
reboot.
And surprise  yet another kmod-nvidia shows as installed.
Well at least I found that for some reason i don't need kernel-devel, which
I'm pretty sure kmod-nvidia installed way back when.
akmod definately wants kernel-PAE-devel to build its magic.





Patrick:  I already looked at that link .  It say no reason for installing
both akmod and kmod which is why I removed the kmod and when I see it gets
automagically installed  at boot time is why I posted here.
As you mentioned, advantageous.... I've seen times  when the  kmod was not
available for several weeks.  I was annoyed because it was just after using
fedup to migrate off f18 ( dropped support ) to f19.  The upgrade was
painful, fedup didn't support my firmware raid system.  I had to run on a
f18 kernel ( while on f19 ) for the weeks till both  new kmod and new
kernel arrived.  The happy folks at bugzilla closed or ignored  my  bug on
fedup, then a week later wanted documentation that I would have had to roll
my system back to f18 to get.  Haven't looked  to see  if bug I reported
on  fedup still there.


I have decided the post you referred to is incorrect in saying no reason to
have both installed, cause akmod installs the other.

----------
Vince



On Sun, Jan 26, 2014 at 2:49 PM, Patrick Shuff <patrick.shuff at gmail.com>wrote:

> kmod-nvidia are the pre-compiled version of the nvidia video kernel
> modules and are tied to (compiled against) specific kernel versions and
> then someone uploads them to the yum repos.  The "akmod" versions, as you
> pointed out, will check at boot-time to see if the proper nvidia kernel
> modules are available, and if they aren't then it will compile the
> necessary bits against your current kernel-headers.  This is advantageous
> if you like to install the newest kernels available in the fedora repos and
> someone hasn't yet put up the kmod-nvidia package for the new kernel or if
> you are into building/using custom kernels to which there will never be a
> pre-compiled version of kmod-nvidia.
>
> Some more reading on the topic:
> http://forums.fedoraforum.org/showthread.php?t=227214
>
>
> On Sun, Jan 26, 2014 at 9:02 AM, Vince Herried <Vince at planetvince.com>wrote:
>
>> Any one know how this works?
>>
>> I removed all the kmod-nvida and installed akmod-nvida.
>> leaving out a lot of dialog, I find that akmod-nvidia, apparently at boot
>> time, at least before i get logged in with X runnning, installs kmod-nvidia
>> ( I re-removed kmod-nvidia and see  a grumble that RPMDB was updated
>> outside yum.)   Then after re-boot kmod-nvidia is re-installed!
>>
>> I need to do some digging,  where do one send bug reports on such?
>> The akmod-nvidia didn't install all the reqs for it to  re-build.  After
>> several attempts to get X going, I find /var/log/messages has grumble of
>> missing devel, install it and all is well.     akmod-nvidia installed a
>> bunch of reqs but missed  kernel-PAE-devel.    I didn't even know there was
>> a different devel for the PAE.
>>
>> If any one going to do install, my recommendation don't yum erase
>> kmod-nvidia,  cause it removes a BIG library that akmod is gonna re-install
>> and seems that akmod-nvidia needs kmod-nvidia.   Almost acts like
>> akmod-nvidia 'desires' kmod-nvidia but doesn't require?  I suppose if i
>> really needed to know, i should try boot with no network access.
>>
>> I must be getting a tiny bit smarter,  this cycle of broken X11 only
>> lasted couple of hours or so,  much less than previous times.
>>
>> ---
>> Vince
>>
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>>
>
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