flymike's questions

Intermittently, all events from (Google) calendars disappear from Thunderbird. The affected calendar is still listed in TB, but with no events.

Unsubscribing then re-subscribing to the affected calendar solves the problem, BUT it takes several minutes for TB to "find" calendars in the requested Google account.

Any suggestions for solving this?

Thunderbird 102.2.2 (64-bit) in Ubuntu 22.04 package. Not using any calendar addons for Google calendar. Other addons are CardBook, Emoji, & FileLink Provider for DropBox.

Intermittently, after my display(s) have locked because of the configured Screen Lock - I cannot unlock. I get a password prompt, and am able to enter the password but, after tapping Enter, the busy circle appears and remains indefinitely - until I reboot. Or, I can also SSH into the failing system from elsewhere, and reboot from the command line.

Ubuntu 20.04.4, Gnome 3.36.8

In the syslog below, I try to unlock at 22:04:40, and eventually reboot at 22:05:09.

Is there any clue in this syslog extract?

Mar 10 22:00:01 localhost CRON[59125]: (flymike) CMD (. ~/.profile; rsync -a redacted...
Mar 10 22:04:40 localhost dbus-daemon[1186]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.61' (uid=1000 pid=2420 comm="/usr/bin/gnome-shell " label="unconfined")
Mar 10 22:04:40 localhost systemd[1]: Starting Fingerprint Authentication Daemon...
Mar 10 22:04:40 localhost dbus-daemon[1186]: [system] Successfully activated service 'net.reactivated.Fprint'
Mar 10 22:04:40 localhost systemd[1]: Started Fingerprint Authentication Daemon.
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Mar 10 22:04:44 localhost NetworkManager[1188]: <info>  [1646967884.3598] agent-manager: agent[67d50e6f556b69d3,:1.61/org.gnome.Shell.NetworkAgent/1000]: agent registered
Mar 10 22:04:44 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activating service name='org.freedesktop.FileManager1' requested by ':1.21' (uid=1000 pid=2420 comm="/usr/bin/gnome-shell " label="unconfined")
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Mar 10 22:04:44 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activating service name='org.gnome.Nautilus' requested by ':1.21' (uid=1000 pid=2420 comm="/usr/bin/gnome-shell " label="unconfined")
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_parser_new_from_buf: assertion 'a_buf && a_len' failed
Mar 10 22:04:44 localhost gnome-shell[2420]: cr_declaration_parse_list_from_buf: assertion 'parser' failed
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activating via systemd: service name='org.freedesktop.Tracker1' unit='tracker-store.service' requested by ':1.172' (uid=1000 pid=59433 comm="/usr/bin/nautilus --gapplication-service " label="unconfined")
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activation via systemd failed for unit 'tracker-store.service': Unit tracker-store.service is masked.
Mar 10 22:05:09 localhost nautilus[59433]: Error on getting connection: Failed to load SPARQL backend: GDBus.Error:org.freedesktop.systemd1.UnitMasked: Unit tracker-store.service is masked.
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activating via systemd: service name='org.freedesktop.Tracker1' unit='tracker-store.service' requested by ':1.172' (uid=1000 pid=59433 comm="/usr/bin/nautilus --gapplication-service " label="unconfined")
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Activation via systemd failed for unit 'tracker-store.service': Unit tracker-store.service is masked.
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Successfully activated service 'org.gnome.Nautilus'
Mar 10 22:05:09 localhost org.freedesktop.FileManager1[59433]: Initializing nautilus-dropbox 2019.02.14
Mar 10 22:05:09 localhost dbus-daemon[2148]: [session uid=1000 pid=2148] Successfully activated service 'org.freedesktop.FileManager1'

After every boot of Ubuntu 20.04, I find that the mysql.service has failed to start - but I can restart it manually successfully.

Looking in syslog during the boot, I can see that the mysql.service is starting before its file system is mounted (/var/lib/mysql is a mount point for a logical volume).

So mysql.service always fails during the boot sequence, because it can't find its files. The service always starts successfully after the boot has completed.

How can I fix this?

Notepad++ installed from Ubuntu Software (snap package) maps the root FS to a "Z" drive.

But, when launched, File Open only shows the top level of directories under "/". For example, File Open will show /var but not /var/log - even though both of those directories are world-read.

Similarly, if NPP is launched against, for example, /var/log/syslog (when that file is made world-readable) - NPP shows the error "Can not open file 'Z:\var\log\syslog'".

Is there any way around this?

Fresh install of 20.04 boots normally, but I see this in syslog at every boot.

It looks like no swap file is being allocated. How can I fix this?

systemd-fsckd.service: Succeeded.
dev-mapper-vgubuntu\x2dswap_1.device: Job dev-mapper-**vgubuntu\x2dswap_1.device/start timed out**.
Timed out waiting for device /dev/mapper/vgubuntu-swap_1.
Dependency failed for /dev/mapper/vgubuntu-swap_1.
Dependency failed for Swap.
swap.target: Job swap.target/start failed with result 'dependency'.
dev-mapper-vgubuntu\x2dswap_1.swap: Job dev-mapper-vgubuntu\x2dswap_1.swap/start failed with result 'dependency'.
dev-mapper-vgubuntu\x2dswap_1.device: Job dev-mapper-vgubuntu\x2dswap_1.device/start failed with result 'timeout'.
May 14 13:41:08 localhost systemd[1]: Reached target System Initialization.

/etc/fstab contains:

/dev/mapper/vgubuntu-swap_1 none swap sw 0 0

The 2 logical volumes in vgubuntu (root & swap_1) are both allocated to PV /dev/mapper/pdc_biabhicfdd5, which is 2 SSDs configured in a (BIOS) RAID1 array.

/proc/swaps has no entries.

swapon -a returns error "cannot open /dev/mapper/vgubuntu-swap_1: No such file or directory".

sudo lvscan shows "/dev/vgubuntu/swap_1" as inactive.

So I activated /dev/vgubuntu/swap_1 with sudo lvchange, then sudo swapon -a succeeded, and vmstat now shows Swap space available.

But, when rebooted, everything reverts, and the same errors are in syslog.

So, it looks like the Swap logical volume is not being activated during boot for some reason.

Any ideas!

I'm unable to install Ubuntu 20.04 on a 120GiB SSD because the device is not included in the list of devices available for install. The SSD does show in gparted, with no partitions allocated, and an msdos partition table. The system is BIOS, not UEFI.

Subsequently, I've formatted the SSD with ext4, and can write to it - so there's no problem with the SSD itself.

What would prevent Ubuntu installer from seeing the SSD as a device it can install to?

Booting from 18.04 Live USB, only ever get to wallpaper - no cursor, no desktop, no choice of Try or Install.

AMD A4-5300 with Radeon HD 7480D on PCI Express. BIOS is set to use PCI instead of onboard graphics.

16.04 is installed on hard disk and works fine.

USB boots fine in another PC.

Recently, name resolution failed on Ubuntu 16.04, and I worked around the problem by adding "nameserver 127.0.0.1" to /etc/resolv.conf (which fixed the problem)

I know I should not be manually editing /etc/resolv.conf in 16.04

What package(s) can I reinstall to get DNS resolution back to the pristine state for 16.04?

linux-cloud-tools-common package update is failing (see below) because of trying to stop hv-fcopy-daemon.service (and related services) - which are not installed. I'm using Ubuntu 16.04 on a real desktop, not Cloud.

Why is the update trying to operate on a package which is not installed?

How can I get around this error?

sudo apt-get upgrade
[sudo] password for xxxxx: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  linux-cloud-tools-common
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/57.1 kB of archives.
After this operation, 11.3 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
(Reading database ... 344805 files and directories currently installed.)
Preparing to unpack .../linux-cloud-tools-common_4.4.0-131.157_all.deb ...
Failed to stop hv-fcopy-daemon.service: Unit hv-fcopy-daemon.service not loaded.
Failed to stop hv-kvp-daemon.service: Unit hv-kvp-daemon.service not loaded.
Failed to stop hv-vss-daemon.service: Unit hv-vss-daemon.service not loaded.
dpkg: warning: subprocess old pre-removal script returned error exit status 5
dpkg: trying script from the new package instead ...
Failed to stop hv-fcopy-daemon.service: Unit hv-fcopy-daemon.service not loaded.
Failed to stop hv-kvp-daemon.service: Unit hv-kvp-daemon.service not loaded.
Failed to stop hv-vss-daemon.service: Unit hv-vss-daemon.service not loaded.
dpkg: error processing archive /var/cache/apt/archives/linux-cloud-tools-common_4.4.0-131.157_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 5
/usr/bin/deb-systemd-helper: error: unable to read hv-fcopy-daemon.service
/usr/bin/deb-systemd-helper: error: unable to read hv-kvp-daemon.service
/usr/bin/deb-systemd-helper: error: unable to read hv-vss-daemon.service
Failed to get unit file state for hv-fcopy-daemon.service: No such file or directory
hv-fcopy-daemon.service is a disabled or a static unit, not starting it.
Failed to get unit file state for hv-kvp-daemon.service: No such file or directory
hv-kvp-daemon.service is a disabled or a static unit, not starting it.
Failed to get unit file state for hv-vss-daemon.service: No such file or directory
hv-vss-daemon.service is a disabled or a static unit, not starting it.
Errors were encountered while processing:
 /var/cache/apt/archives/linux-cloud-tools-common_4.4.0-131.157_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Additional info:

dpkg -S hv-kvp-daemon.service
linux-cloud-tools-common: /lib/systemd/system/hv-kvp-daemon.service
dpkg -S hv-fcopy-daemon.service
linux-cloud-tools-common: /lib/systemd/system/hv-fcopy-daemon.service
dpkg -S hv-vss-daemon.service
linux-cloud-tools-common: /lib/systemd/system/hv-vss-daemon.service
apt-cache policy linux-cloud-tools-common
linux-cloud-tools-common:
  Installed: 4.4.0-128.154
  Candidate: 4.4.0-131.157
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        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-43.63 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
     4.4.0-42.62 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-38.57 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-36.55 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-34.53 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-31.50 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-28.47 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-24.43 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-22.40 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     4.4.0-21.37 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial/main i386 Packages

Periodically, I see the following in syslog:

systemd[1]: spamassassin.service: Main process exited, code=exited, status=255/n/a
systemd[1]: spamassassin.service: Unit entered failed state.
systemd[1]: spamassassin.service: Failed with result 'exit-code'.

but the service does not automatically restart. It does start successfully with:

sudo service spamassassin restart

Can I configure spamassassin to restart automatically after it fails?

When I try to start postsrsd with sudo service postsrsd start, it results in the following syslog entries: Started SRS lookup table for Postfix. /usr/sbin/postsrsd: option requires an argument -- 'd' postsrsd.service: Main process exited, code=exited, status=1/FAILURE The problem seems to be that variable SRS_DOMAIN in /etc/default/postsrsd is not being initialized with postconf -h mydomain. I assume that /etc/init.d/postsrsd is responsible for that, but I can't figure why it isn't doing it. The command postconf -h mydomain does yield the correct result.

Any ideas?

When I hover over a quick launch icon, the name of the underlying application is displayed. But how can I find what application is really being invoked?

In a MS Windows context, I would right click the icon and select Properties - then the path of the file to be executed would be shown.

This came up because my "Files" quick launch icon would do nothing, and it took some considerable research to realize that icon was actually linked to /usr/bin/nautilus.

When I open a terminal window (bash shell) and hit Up Arrow, the last command entered is presented.

When running a simple PHP script in the same terminal window, and the script reads from STDIN using fgets, and I hit Up Arrow, then the characters ^[[A are presented.

How to make the PHP script behave like the bash shell prompt, and present the last input?

Files app in Ubuntu 16.04 has a Download bookmark with a download icon beside it. The bookmark points to $HOME/Downloads.

I wanted to change where it pointed to, but discovered that it's not a bookmark listed under the Menu item, Bookmarks. Instead, it seems to be one of the "special" bookmarks, like Recent, and Desktop.

How can I change where the Downloads "bookmark" points to?

Sound, as recorded by Audio Recorder or Skype, is distorted when played back with RythmBox or Skype (sounds like a cartoon character). Microphone is a webcam (video is fine), and works perfectly with Windows. In Settings, audio input is set to "Microphone, Webcam C200" unmuted, and that same input is selected with Audio Recorder. RythmBox plays externally recorded music perfectly, so the problem is limited to the webcam mic.

How to fix? (I have limited unix desktop experience)