[arch-general] Kernel modules not loaded after Linux update

Peter Nabbefeld peter.nabbefeld at gmx.de
Wed Aug 1 12:40:24 UTC 2018

Am 30.07.2018 um 18:51 schrieb srainey at delta-info.com:
>>> Am 30.07.2018 um 15:36 schrieb Shawn Rainey:
>>>> Am 22.07.2018 um 11:27 schrieb Peter Nabbefeld:
>>>>> Hello,
>>>>> I've updated my installation yesterday, also doing an update of the
>>>>> Linux kernel to 4.17.8. When starting this morning, kernel modules
>>>>> rejected to load, so I even couldn't access the internet.
>>>>> I've downgraded Linux now to 4.17.2, but still have some problems
>>>>> (probably because I only downgraded the kernel itself).
>>>>> I cannot find the error message from the service again, sorry, so I
>>>>> cannot tell You, it had to do with some security parameter not set.
>>>>> According to the description of kernel downgrading in the wiki, I
>>>>> should have downgraded linux-headers, too, but these are not in my
>>>>> package cache - are they included in the kernel package now?
>>>>> How can I find out, which other kernel modules need to be downgraded?
>>>>> Kind regards
>>>>> Peter
>>>> This happened to me on 2 installations so far (the only 2 I've done) on
>>>> updating the kernel to 4.17.10-1.   It looks like the problem is that the
>>>> /boot partition was not mounted, as it usually is, during the update
>>>> process.
>>>> This caused the previously installed kernel to load, and the modules to fail
>>>> to load due to version mismatch.
>>>> I fixed it by booting to live media, mounting the /boot and / partitions
>>>> appropriately and doing arch-chroot to / to install the cached 4.17.10 image
>>>> with pacman -U
>>>> For now I've also put the /boot partition in my fstab, even though iirc
>>>> the wiki recommends against this.
>>>> Good luck,
>>>> -Shawn
>>> Thank You, Shawn! So, if I understand You correctly, the basic problem
>>> cause seems to be some change in /boot partition handling (i.e. AFAIK
>>> /boot was automatically mounted during kernel installation, but isn't
>>> now for any reason). As a result, probably the old modules are still
>>> there instead of the new ones after the kernel update.
>>> Do You really still need the fstab change after updating the modules? Or
>>> did Youz just change it so You'll be prepared for the next update?
>>> Kind regards
>>> Peter
>> That's correct at least in my case - I've never had to take any measures to
>> mount the separate /boot partition when updating before, and it's never been
>> in my systems' fstab files, but this past week something must have changed.
>> When the failure initially happened, the /boot directory in the root file system
>> contained the correct images - they matched checksums with the images from the
>> linux package.  When I booted to the live media and inspected the actual boot
>> partition, I could see the old images were still there, which led me to the fix.
>> I added /boot to the fstab mostly as a precautionary measure.  I can't say if
>> it's truly necessary as I'm not familiar enough with the system to know what
>> changed and caused this breakage.  But it should prevent this particular mode
>> of failure from happening again.
>> Also apologies for any odd formatting issues - I don't often write to mailing lists.
>> -Shawn
> I may have actually spoken too soon about adding /boot to fstab - my system is not
> happy with that configuration (just notice I had an error in the fstab file that
> caused it to silently fail).  I don't know what to do about updates in the meantime
> other than to be careful to make sure the boot partition has the correct images after
> each kernel update.
> I'm not sure where to go from here - According to logs, the last upgrade I know was
> successful was from Jul. 19 (the system rebooted successfully immediately after).
> There was then no attempt to restart the system until upgrading on July 27, when the
> boot failure occured.

Hi Shawn, thank You for Your answers! Just updated to linux 4.17.11-1 
without any problems. Probably it's just been some conflict in 4.17.8.

Kind regards


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