Problems in kubuntu after SSD optimization

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Sep 11, 2018, 8:52:54 AM9/11/18
to Errors in Easylinuxtipsproject

First, thanks for your nice tips! All the SSD optimizations make sense to me, however there seems to be some unexpected side effect that I am hitting.

I installed KUbuntu 18.04.1 and had it running fine for a week or two, including a local printer and the OwnCloud sync client.

I changed the scheduler to deadline, and added the noatime option in Grub, per instructions.

The machine still boots fine and seems to be ok, but:

(1) When I try to print something, the jobs just go into the printing queue and never start printing - the status says "-" or "waiting". Then, when I shut down, I have to wait 90s (timeout), because CUPS was not terminated.

(2) Whenever OwnCloud starts at boot, I get a prompt that it wants access to KWallet, and I need to authorize this with a password.
Indeed, I had my OwnCloud password stored in KWallet, but I did not have to authorize the access to KWallet repeatedly.

I tried undoing the above-mentioned changes, but it did not help, unfortunately.

I am not 100% sure if (1) happened today, because I do not print every day, but I am sure about (2). The only other things I did with the system in the meantime:

- sudo apt update;sudo apt upgrade (see below for the list of updated packages)
- I added apt update and apt upgrade entries to the sudoers file to have them run without a password
- I removed the "splash" parameter from GRUB_CMDLINE_LINUX_DEFAULT (so I now have GRUB_CMDLINE_LINUX_DEFAULT="quiet")

Any ideas what could have gone wrong? Should I start over with a clean install?


Start-Date: 2018-09-11 12:10:20
Commandline: /usr/bin/unattended-upgrade
Upgrade: linux-signed-generic:amd64 (,
End-Date: 2018-09-11 12:10:21

Start-Date: 2018-09-11 12:10:22
Commandline: /usr/bin/unattended-upgrade
Install: linux-modules-4.15.0-34-generic:amd64 (4.15.0-34.37, automatic), linux-headers-4.15.0-34:amd64 (4.15.0-34.37, automatic), linux-image-4.15.0-34-generic:amd64 (4.15.0-34.37, automatic), linux-headers-4.15.0-34-generic:amd64 (4.15.0-34.37, automatic), linux-modules-extra-4.15.0-34-generic:amd64 (4.15.0-34.37, automatic)
Upgrade: linux-headers-generic:amd64 (,, linux-image-generic:amd64 (,, linux-generic:amd64 (,
End-Date: 2018-09-11 12:10:42

Start-Date: 2018-09-11 13:15:23
Commandline: apt upgrade
Requested-By: maciejr (1000)
Upgrade: libglib2.0-bin:amd64 (2.56.1-2ubuntu1, 2.56.2-0ubuntu0.18.04.1), libglib2.0-data:amd64 (2.56.1-2ubuntu1, 2.56.2-0ubuntu0.18.04.1), libglib2.0-0:amd64 (2.56.1-2ubuntu1, 2.56.2-0ubuntu0.18.04.1)
End-Date: 2018-09-11 13:15:25

Sep 24, 2018, 6:50:25 AM9/24/18
to Errors in Easylinuxtipsproject
A quick update. Of the issues I described it seems that:

(1) - the printer - was apparently unrelated to your tips. Some update must have changed the printer's settings. I discovered conflicting settings in the dialog. After correcting this I applied your tips again and there is no problem.

(2) - OwnCloud/kwallet inconvenience - I previously reported that the problem persisted when I undid the changes. Then it somehow got fixed, and I cannot tell when. Now, when I changed the scheduler to deadline again, the problem reappeared. I will investigate it.

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