Kubuntu won't boot

[rikona]

On 2021-07-28 02:05, Liam Proven wrote:

Sorry - have to use webmail since box is down. Hope it looks OK...

> On Wed, 28 Jul 2021 at 03:27, rikona <rikona at sonic.net> wrote:
> 
>> New box running Kubuntu 20.04. Has run well for a while, but now won't 
>> boot. This is the first time I tried a boot since the original bootup, 
>> which worked well.
>> 
>> Since it had been running a while with no updates, I decided to update 
>> the box. I usually save/close everything, shut down, restart to clear 
>> any leftovers, shut down again, restart and then do the the update.
> 
> OMG. This is not Windows, you know. This is not Windows. Updates are
> your friend. Do them early, do them often.
> 
> I update my machines _every day_.

Wow - that's often! I usually do every couple of weeks, but this was a 
bit longer.

<snip reboot stuff>

> You should expect to be rebooting every day, and if you have not
> rebooted a machine at least 1/2 dozen times, then you have not tested
> it properly and it is not ready to be deployed yet.
> 
>> But after shutting down the box [first time ever] it would not boot 
>> up. I can get the ASUS MB boot screen, but that stays there forever.
> 
> You didn't test it enough. :-(

I think you're right on this. :-) Never had this kind of problem before, 
so didn't think of it.

The main reason I don't reboot often is that I have huge amounts of 
stuff open - alternately working on many projects at the same time. 
Running 3-4 different browsers, with up to 8 instances each, each 
instance with perhaps 12-15 tabs open. And that's just browsers. May 
also have 20 or so documents of various kinds open and being worked on. 
Plus search pgms etc. A LOT of stuff always open. Restoring this after a 
reboot takes a lot of time, so I don't like to reboot often.

> What motherboard? What firmware version? Have you checked for updates?
> What medium is it booting off? Is there anything difficult or tricky
> in there, like LVM, partitioning, ZFS, anything like that?

MB is ASUS Z590-A - didn't update it [yet].
Booting from fast Samsung NVMe SSD.
Root on Samsung  2Tb PCIe 4
[these were a *huge* splurge for me, expensive, but the performance is 
amazing - a complex indexed search of several Tb of data takes only a 
few seconds. I estimate it is about 10x as fast as my old system.]
[because of the $$$ I don't have any disk spares to swap.]
Nothing tricky, kde.