[elrepo] Keyboard ceases functioning after install of kmod-nvidia-340xx

[Jeremy Yocum]

Thanks everyone for the input!

On 6/16/20 7:21 PM, Phil Perry wrote:
> Hi Jeremy,
>
> Are all kernels affected?
>
Yes, kind of? The two most recent kernels on my grub boot have the same
issue — the keyboard stops working right after I leave the grub menu.

This *doesn't* happen on the third / oldest / rescue kernel. There the
keyboard keeps working, but then I get 2.5 full screens' worth of
dracut-initqueue-timeout errors then it drops me into emergency mode with a
"dracut:/#" prompt.

I saved a file of the rdsosreport.txt file it makes on a USB, but I don't
know what to make of it. (This is where my two months of Linux experience
really shows itself.)

I type "exit" and it says "Warning: Not all disks have been found. Warning:
You might want to regenerate your initramfs." (So maybe initramfs is the
problem?) Then it sits after those error messages indefinitely, hours if I
let it. Shockingly it lets me force a reboot with Ctrl-Alt-Del (but I have
to press it seven times).


> Are you able to uninstall affected kernel(s) and reinstall them.
>
No — because I can't access internet in recovery mode now for some reason.
I tried to download the most recent kernel package I was using on another
computer and bring it to the problem machine via USB, but I can't find the
.rpm for the kernel I was last using. There are apparently some newer
kernels, but I don't want to try to upgrade the kernel while I'm still
having so many issues!


> Are you able to try plugging in a USB keyboard to see if that works.
>
I don't have a USB keyboard. :(  I'm torn between ordering a USB keyboard
to try it out and just reinstalling CentOS 8 and starting from scratch. But
I do really, really want to figure out how to fix the issue because I want
to better understand Linux and how it interacts with hardware.


> To be honest, other than this seems to have been triggered when you
> installed the nvidia drivers, this doesn't look like an elrepo issue
> and I'm struggling to know what the issue may be or suggest things
> that may help.
I appreciate your help! No one on the CentOS forums has responded to the
issue — I think folks think it's an ELRepo issue. Or they just don't know
what to suggest.

I *did* come to this mailing list because the keyboard issue appeared
immediately after the Nvidia driver install, so at the very least I hoped
you might know what in the ELRepo install process might have caused the
error.

So again, my apologies for being so new to Linux — do you think I should
try and reinstall my most recent kernel if I can find the .rpm online
somewhere?


— Jeremy



On Tue, Jun 16, 2020 at 3:54 PM John Pilkington <johnpilk222 at gmail.com>
wrote:

> On 16/06/2020 18:06, Manuel Wolfshant wrote:
> > On 6/16/20 7:21 PM, Phil Perry wrote:
> >> Hi Jeremy,
> >>
> >> Are all kernels affected?
> >>
> >> Are you able to uninstall affected kernel(s) and reinstall them.
> >>
> >> Are you able to try plugging in a USB keyboard to see if that works.
> >>
> >
> > probably completely unrelated but running centos 7 on my ibm blades
> > kills the AMM. once the OS boots both the physical USB keyboard
> > connected to the AMM and the virtual keyboard provided by the KVM become
> > unresponsive until I trigger a reset of the AMM. After the reset the
> > keyboards work for a few seconds and die again.
> >
> > apparently ( i.e. at least once ) I solved that by removing "rhgb" from
> > the kernel line but I did not yet have time to verify if the fix
> > persists across reboots
> >
> >
> >
> >> To be honest, other than this seems to have been triggered when you
> >> installed the nvidia drivers, this doesn't look like an elrepo issue
> >> and I'm struggling to know what the issue may be or suggest things
> >> that may help.
> >
> >
> > pretty sure it's not a drivers-provided-by-elrepo issue. but it's an
> > interesting one.
> >
>
> I haven't run nVidia druvers from elrepo, and I believe that 340 is now
> beyond EoL from nVidia itself;  but ISTR that when attempting to switch
> between nouveau and nVidia-based drivers the most recently installed one
> will often work.  If your system is currently unusable this might be
> worth a try.
>
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