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#1 2018-02-20 02:54:26

vjarnot
Member
Registered: 2018-02-20
Posts: 3

[SOLVED] Upgrade to linux-4.15.3-2 from 4.15.2-2 breaks at least USB..

Wish I had more info to share - and am willing to jump through a few hoops to do so if anyone has any suggestions, but what I've got thus far:

Hardware is Asus Z370-I, i7-8700K, nvme ssd.  Clean arch system, installed a few weeks ago, did pacman -Syu this evening.

linux-4.15.2-2 and linux-headers-4.15.2-2 both were upgraded to 4.15.3-2 amongst many other packages.

End result was a system that technically booted, but not very usefully. By default running SDDM, upon first boot neither keyboard nor mouse worked (yes, tried multiple ports); and video (onboard Intel video Z370 chipset) was moderately corrupted (top 10% of screen flashing, bottom 10% blank).

Told grub to boot text-mode, and things didn't get any better - video problems gone, but mouse/keyboard still not working. This made it impossible to dmesg and see what was wrong... it did look like an error flashed by very early in the boot, but there was no getting to see it (I tried boot_delay=1000 via grub, but that didn't do anything).

Problem solved by USB booting, chrooting, and downgrading to linux-4.15.2-2 and linux-headers-4.15.2-2, but this doesn't help in the long-term.


I'd also like to take the opportunity to thank the individual who decided it was a good idea to require a working linux-ish system in order to register for these forums - it makes seeking help when your linux box is broken very convenient.

Last edited by vjarnot (2018-02-20 04:15:32)

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#2 2018-02-20 03:07:12

Scimmia
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Registered: 2012-09-01
Posts: 11,466

Re: [SOLVED] Upgrade to linux-4.15.3-2 from 4.15.2-2 breaks at least USB..

Sounds like you were booting the wrong kernel. Check your bootloader config, see where it's loading the kernel from and make sure that's what gets updated when you update the linux package (installs to /boot).

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#3 2018-02-20 03:26:34

vjarnot
Member
Registered: 2018-02-20
Posts: 3

Re: [SOLVED] Upgrade to linux-4.15.3-2 from 4.15.2-2 breaks at least USB..

I can check - but I don't get how that's possible, though multiple upgrades (to 4.15.3-2) & downgrades (to 4.15.2-2) 4.15.2-2 always ended up in the right place at the right time.

On edit:

Hmm, something a bit odd going on.

Like I said, I "fixed it" by chrooting and downgrading linux and linux-headers. To answer your question, I decided to pacman -Syu again and see what changed in /boot.  Well, initramfs-* changed, but vmlinuz-linux did not. So without rebooting, I downgraded again, and this time initramfs-* changed, and vmlinuz-linux changed as well.

Last edited by vjarnot (2018-02-20 03:45:02)

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#4 2018-02-20 04:14:36

vjarnot
Member
Registered: 2018-02-20
Posts: 3

Re: [SOLVED] Upgrade to linux-4.15.3-2 from 4.15.2-2 breaks at least USB..

Solved, thank you Scimmia for putting me on the right track. Turns out I had some weirdness with /boot - in my chroot environment I was mount the ESP there, but in my actual fstab /boot wasn't a separate mount (just working off /).

Last edited by vjarnot (2018-02-20 04:15:49)

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