Kubuntu won't boot

[rikona]

On 2021-07-28 18:26, Ralf Mardorf via ubuntu-users wrote:

<snips>

>> Using a Live Ubuntu take a look at log files, especially of the
>> display manager and xorg first. You even can take a look at the
>> binary systemd log files by using the    string    command, without
>> the need to do anything more complicated.
> 
> I don't seem to have permission to look at log files. Owned by root on
> the original box. How can I do that? Might be nice to look at boot
> log. :-)

Use sudo to get the required permissions.

Thanks for the help!! I have figured out how to get to the info. I 
looked at a few boot logs. Here is part of what I found:

The failed bootlogs end with:

[  OK  ] Finished Set console scheme.
[  OK  ] Created slice system-getty.slice.
[  OK  ] Started Manage, Install and Generate Color Profiles.

I don't see the last line in any of the other boot info.

An earlier successful boot ends with:

[  OK  ] Finished Set console scheme.
[  OK  ] Created slice system-getty.slice.

The DVD boot log is rather different, as one might expect, and ends 
with:

[  OK  ] Started Hostname Service.
[  OK  ] Started Thermal Daemon Service.
[  OK  ] Started Network Name Resolution.
[  OK  ] Reached target Host and Network Name Lookups.
[  OK  ] Started Modem Manager.
[  OK  ] Started WPA supplicant.

The "[  OK  ] Started Manage, Install and Generate Color Profiles." line 
is only in failed boot logs. Could that be related to the problem?

I was also able to copy much of the original SSD data to a HD using the 
CLI. Some of the files may still have permission problems [some came 
from other sources, and I had permission problems even before this] and 
did not get copied. But, looking at what was copied, I got perhaps 95% 
of the files, so MUCH better than nothing. Not all, though, so I'd like 
to avoid doing anything that might lose that data on the original SSD.

Again, many thanks...

Rik