lost wifi, ethernet, docking station with 16.04 kernel signing.

[Peter Silva]

On Mon, Apr 25, 2016 at 8:25 PM, Tom H <tomh0665 at gmail.com> wrote:

> On Tue, Apr 26, 2016 at 2:15 AM, Tom H <tomh0665 at gmail.com> wrote:
> > On Tue, Apr 26, 2016 at 1:26 AM, Peter Silva <peter at bsqt.homeip.net>
> wrote:
> >>
> >> I boot 4.4.0-18 and all the modules insert just fine.
> >> 4.4.0-19 and later I get the error message.
> >
> > Please bottom-post.
> >
> > My apologies. I always assumed that setting the MODULE_SIG* would
> > force the kernel to check for signed modules in general as well as for
> > signed modules in the SB case but I had some doubts.
> >
> > Given your problem, I had the rather silly idea of grepping through
> > the 4.4.0-21 kernel config for "EFI" and I found
> > "EFI_SECURE_BOOT_SIG_ENFORCE".
> >
> > I couldn't find it in my upstream 4.6-rc5 kconfig but I did find it in
> > an Ubuntu patch, "linux_4.4.0-21.37.diff", and it means "Force module
> > signing when UEFI Secure Boot is enabled".
> >
> > Check -18 and -19 for this. It's probably off or non-existent in -18.
> >
> > So Ubuntu's killed dkms-dependent packages (or otherwise
> > locally-compiled modules) with SB active - unless you compile and sign
> > your own stuff.
>
> I've found the "EFI_SECURE_BOOT_SIG_ENFORCE" bug:
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1566221
>
> You can use dkms modules after running "sudo mokutil
> --disable-validation" so it might/should work for your
> locally-compiled modules.
>

This made no difference.   I did mokutil --disable-validation, it prompted
for a password twice... did not know if it was setting one or asking for a
known one then returned (usually means success in linux.)

tried rebooting... same behaviour.

went into bios.  Disabled secure boot for now...
now can boot and run modules on 4.4.0-22.

A lot of people need external modules.
Any easy recipes to sign modules for non kdevs somewhere?



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