I'm thinking to reinstall Ubuntu on my machine and would love to have Unity back.
I can't get used to Gnome.
What is the best way to get Unity back on the recent releases of Ubuntu?
Or is there an alternative to Unity?
The feature I miss the most is the Alt search for a menu item.
Context: my noteboook froze and I force restarted it. After restart, I can't seem to start the mysql server.
$ sudo systemctl start mysql
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.
Then:
$ systemctl status mysql.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: activating (start-post) (Result: exit-code) since Wed 2018-02-21 10:15:57 EET; 22s ago
Process: 8611 ExecStart=/usr/sbin/mysqld (code=exited, status=2)
Process: 8605 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 8611 (code=exited, status=2); Control PID: 8612 (mysql-systemd-s)
Tasks: 2 (limit: 4915)
CGroup: /system.slice/mysql.service
└─control
├─8612 /bin/bash /usr/share/mysql/mysql-systemd-start post
└─9459 sleep 1
feb 21 10:15:57 notebook systemd[1]: Starting MySQL Community Server...
feb 21 10:15:57 notebook systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
and:
feb 21 10:15:57 notebook audit[8611]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/8611/status" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:15:57 notebook audit[8611]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=0
feb 21 10:15:57 notebook audit[8611]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/8611/status" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:15:57 notebook kernel: audit: type=1400 audit(1519200957.179:123): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/8611/status" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:15:57 notebook kernel: audit: type=1400 audit(1519200957.179:124): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=0
feb 21 10:15:57 notebook kernel: audit: type=1400 audit(1519200957.179:125): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/8611/status" pid=8611 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:15:57 notebook systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
feb 21 10:16:23 notebook unity-scope-hom[10534]: scope.vala:247: Failed to get list of remote scopes: Request failed with error 2
feb 21 10:16:27 notebook systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit mysql.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has failed.
--
-- The result is failed.
feb 21 10:16:27 notebook systemd[1]: mysql.service: Unit entered failed state.
feb 21 10:16:27 notebook systemd[1]: mysql.service: Failed with result 'exit-code'.
feb 21 10:16:27 notebook systemd[1]: mysql.service: Service hold-off time over, scheduling restart.
feb 21 10:16:27 notebook systemd[1]: Stopped MySQL Community Server.
-- Subject: Unit mysql.service has finished shutting down
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has finished shutting down.
feb 21 10:16:27 notebook systemd[1]: Starting MySQL Community Server...
-- Subject: Unit mysql.service has begun start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has begun starting up.
feb 21 10:16:27 notebook audit[9495]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/9495/status" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:16:27 notebook audit[9495]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=0
feb 21 10:16:27 notebook audit[9495]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/9495/status" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:16:27 notebook kernel: audit: type=1400 audit(1519200987.677:126): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/9495/status" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:16:27 notebook kernel: audit: type=1400 audit(1519200987.677:127): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=0
feb 21 10:16:27 notebook kernel: audit: type=1400 audit(1519200987.677:128): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/9495/status" pid=9495 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=128 ouid=128
feb 21 10:16:27 notebook systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Some relevant logs:
2018-02-21T08:05:30.279927Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2018-02-21T08:05:30.289022Z 0 [Note] InnoDB: Completed initialization of buffer pool
2018-02-21T08:05:30.292279Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2018-02-21T08:05:30.314528Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2018-02-21T08:05:30.318295Z 0 [Note] InnoDB: Log scan progressed past the checkpoint lsn 82335887334
2018-02-21T08:05:30.318321Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 82335916567
2018-02-21T08:05:30.324853Z 0 [Note] InnoDB: Database was not shutdown normally!
2018-02-21T08:05:30.324866Z 0 [Note] InnoDB: Starting crash recovery.
2018-02-21T08:05:30.411651Z 0 [ERROR] InnoDB: Database page corruption on disk or a failed file read of page [page id: space=0, page number=1579]. You may have to recover from a backup.
2018-02-21T08:05:30.411674Z 0 [Note] InnoDB: Page dump in ascii and hex (16384 bytes):
len 16384; hex 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
What can I do to solve the problem?
I've tried to reinstall mysql-server, but that didn't solve the problem.
It seems that loading the Gnome Terminal theme files is not working anymore in Ubuntu 15.04:
gconftool-2 --load terminal-flat-theme.xml
This does not change my current theme.
The theme file looks like this.
How can I load this XML file as theme?
I need a tool that will do the following: selecting a window, will make a screenshot of that window with a x padding, like in the following image:
So, in most of the cases x will be equal with y, but sometimes I need different distances.
How to make such a screenshot, automatically? I tried with Shutter, but I couldn't find such a setting there. However, it supports plugins. So a plugin could be to crop the window this way.
Is it possible to enable an autosave after any operation I do in InkScape?
This would be really handy because sometimes it crashes, and pressing CTRL + S is annoying.
I saw this in the system log: EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro. What is the meaning of this error?
How to fix it?
Relevant output:
$ dmesg | grep mount
[ 1.515956] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 2.750742] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
I installed Krita on Ubuntu 14.04, Unity desktop, and the icons are missing:
How can this problem be solved?
I ran sudo apt-get update and at the end I have these errors:
Fetched 14,3 kB in 54s (264 B/s)
Reading package lists... Done
W: GPG error: http://archive.canonical.com saucy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A040830F7FAC5991
W: GPG error: http://archive.getdeb.net trusty-getdeb InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A8A515F046D7E7CF
W: GPG error: https://private-ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E131728675254D99
W: GPG error: http://archive.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
W: GPG error: http://archive.ubuntu.com trusty-proposed Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32
It seems my missing keys are:
I saw most of answers say to run:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys [MISSING KEY]
I ran that:
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.2LrTHdOU28 --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/amandeepgrewal-notifyosdconfig.gpg --keyring /etc/apt/trusted.gpg.d/apandada1-typhoon.gpg --keyring /etc/apt/trusted.gpg.d/brightbox-ppa.gpg --keyring /etc/apt/trusted.gpg.d/chris-lea-node_js-devel.gpg --keyring /etc/apt/trusted.gpg.d/chris-lea-node_js.gpg --keyring /etc/apt/trusted.gpg.d/colingille-freshlight.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg --keyring /etc/apt/trusted.gpg.d/diesch-testing.gpg --keyring /etc/apt/trusted.gpg.d/duh-golang.gpg --keyring /etc/apt/trusted.gpg.d/ferramroberto-gsharkdown.gpg --keyring /etc/apt/trusted.gpg.d/finalterm-daily.gpg --keyring /etc/apt/trusted.gpg.d/fkrull-deadsnakes.gpg --keyring /etc/apt/trusted.gpg.d/fossfreedom-byzanz.gpg --keyring /etc/apt/trusted.gpg.d/fossfreedom-packagefixes.gpg --keyring /etc/apt/trusted.gpg.d/gophers-go.gpg --keyring /etc/apt/trusted.gpg.d/leolik-leolik.gpg --keyring /etc/apt/trusted.gpg.d/linrunner-tlp.gpg --keyring /etc/apt/trusted.gpg.d/mactel-support-ppa.gpg --keyring /etc/apt/trusted.gpg.d/me-davidsansome-clementine.gpg --keyring /etc/apt/trusted.gpg.d/michael-gruz-canon-trunk.gpg --keyring /etc/apt/trusted.gpg.d/michael-gruz-canon.gpg --keyring /etc/apt/trusted.gpg.d/moka-stable.gpg --keyring /etc/apt/trusted.gpg.d/numix-ppa.gpg --keyring /etc/apt/trusted.gpg.d/nuvola-player-builders-beta.gpg --keyring /etc/apt/trusted.gpg.d/otto-kesselgulasch-gimp-edge.gpg --keyring /etc/apt/trusted.gpg.d/scopes-packagers-ppa.gpg --keyring /etc/apt/trusted.gpg.d/shutter-ppa.gpg --keyring /etc/apt/trusted.gpg.d/steam.gpg --keyring /etc/apt/trusted.gpg.d/sukso96100-budgie-desktop.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-sdk-team-ppa.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-x-swat-x-updates.gpg --keyring /etc/apt/trusted.gpg.d/vajdics-netbeans-installer.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-atom.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-brackets.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-java.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-sublime-text-3.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-themes.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-sublime-text-3.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-themes.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg': resource limit
gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com
gpg: key 437D05B5: "Ubuntu Archive Automatic Signing Key <[email protected]>" not changed
gpg: Total number processed: 1
gpg: unchanged: 1
I can see unchanged: 1.
I also tried to use y-ppa-manager that also didn't solve the problem.
What caused these errors and how can I solve them?
I appreciate the work on Ubuntu Unity dash, but I really don't need all its features.
I want to keep it for only searching applications.
So, I don't want to see Search Filters and the bottom categories. See the screen shot.
What should I do for removing them and set it to only search installed applications?
I need fast shortcut to change the terminal font size. I use gnome-terminal.
I tried with Ctrl + + and Ctrl + - but the size is not changed.
Is there another shortcut? Can I add a shortcut like this?
Is there any command to display the recently modified/created files?
Which one...?
I have an external sound card. It is connected to my laptop via USB and to piano via a jack - jack cable.
I can record sounds from piano (using Audacity) but I cannot hear the sounds in the live mode.
How can I enable live mode? How can I hear the sounds while I am playing piano?
I already tried:
gst-launch pulsesrc ! pulsesink
and
pactl load-module module-loopback latency_msec=1
But none worked as expected...
How can I see what ALSA version is installed on my machine?
I tried:
$ alsa --version
Usage: /sbin/alsa {unload|reload|force-unload|force-reload|suspend|resume}
I would like to set the Max OS X Terminal theme for Ubuntu Terminal. I really like the fonts and the colors. This is how the Mac Terminal does look:
There are few things that I want to see in the Ubuntu Terminal:
I want to replace username@desktop:~/Dropbox$ with the username and the computer name in this format: desktop:Dropbox username$
I want to change the Terminal font to look like in the Mac terminal.
Is this possible? How?
Note that I don't want to change the Ubuntu theme. I use Unity with default theme, but I want to change only the terminal settings because it's the most used application by me.
When creating a .deb package I create a file named control that contains some fields:
Package: my-qt-app-name
Version: 0.01
Architecture: all
Maintainer: my name <my email address>
Installed-Size: 2
Depends: some-package-from-ppa
Section: extras
Priority: optional
Homepage: my homepage
Description: some description
some-package-from-ppa is not installed on the computer. It can be installed only adding a PPA, running apt-get update and then apt-get install some-package-from-ppa.
Can a control file from a deb package contain a PPA address and install that package when the deb file is installed?
When I was running git clone git@... (using ssh) once per computer restart a window dialog appeared containing a textbox for inserting my SSH passphrase and confirmed with OK. Then the passphrase was no longer required until the next start of my system.
After upgrading to Ubuntu 13.10 that window doesn't appear anymore but a message in terminal appears:
Enter passphrase for key '/home/username/.ssh/id_rsa':
...every time when cloning a git repository this appears.
How can I fix this? I want to enter my passphrase only once.
I have an interesting issue with Ubuntu. I have a laptop that has one jack for line in/microphone and line out/headphones.
This the reason why I bought a spliter like below:
Splits one 4 pines jack into two jacks: micrphone and line out
I have an external studio microphone and headphones with the micrphone.
If I connect the micrphone of headphones to spliter that is inserted into my laptop, I can record my micrphone.
HEADPHONES MIC ----+
|
+------- LAPTOP
|
HEADPHONES OUTPUT -+
If I connect another an external hardware (for example a piano) to the splitter, I cannot record anything... This is the issue. How can Ubuntu recognize if there is a headphones micrphone or an external hardware that is NOT a headphones micrphone?
PIANO ------------+
|
+------- LAPTOP
|
HEADPHONES OUTPUT -+
...and the question is how to fix this? I want to record my piano using my laptop: through line in.
Would be the splitter an cause?
Do I really need a hardware that I don't have (like an USB recorder)?
Update: tested on Windows 8 on same laptop. It works properly... (Un)Fortunately, I am an Ubuntu user, so I will not go back to the Windows world... Still searching for a solution on Ubuntu.
My laptop model is Samsung NP300E5V-S01RO.
Update 2: Using alsamixer I managed to listen only the piano sounds, without other microphone sounds. This is how the current alsamixer configuration looks:
The information about my settings can be found here.
I still cannot select in Audacity (or other recording software) the recording device. It records from the internal microphone.
Update 3:
pactl list sources outputs this in the Ports section:
Piano is connected:
analog-input-microphone-internal: Internal Microphone (priority: 8900)
analog-input-microphone: Microphone (priority: 8700, not available)
An external microphone is connected:
analog-input-microphone-internal: Internal Microphone (priority: 8900, not available)
analog-input-microphone: Microphone (priority: 8700, available)
Is there any application that provides a color picker for the screen?
For example: after starting the application the mouse is transformed into a color picker. Clicking anywhere on the screen it will detect the pixel color.
The New file operation is missing in Ubuntu 13.04. How can I fix it?
I have only "New Folder".
How can I add the New File option again?
I want to install more text fonts on Gimp. Currently I have only the default fonts.
Where can I download and install them?
I am on Ubuntu 13.04, using gnome - lastest version.