The screen started flickering and the quick fix is to push down just above the keyboard in the middle and then the flickering stops. Looks like a loose connection of the cable connecting the screen with the motherboard.
Lenovo IdeaPad G580 Laptop Screen Replacement Procedure: https://www.youtube.com/watch?v=smGMmZzm9bc
Lenovo G580 Laptop Disassembly video, take a part, how to open: https://www.youtube.com/watch?v=84lV68WRKlQ
In a lot of cases it is useful to convert bitmaps like jpg, png to vector graphics like SVG or AI.
Inkscape -> Path -> Trace Bitmap
BASH
convert file.png file.pnm
potrace file.pnm -s -o file.svg
Go to Structure -> Webform -> Build -> Add element -> Capthca
Standard packages: aptitude nano git zip software-properties-common
sudo aptitude update; sudo aptitude dist-upgrade
Web packages old sites: apache2 php5 libapache2-mod-php5 php5-cli php5-mysql php5-gd libphp-pclzip mysql-client mysql-server phpmyadmin libsasl2-modules libsasl2-modules-sql libsasl2-2 sasl2-bin libpam-mysql libfcgi-dev phpmyadmin unzip libxml2
sudo a2enmod rewrite
Quick instructions:
insert: "keycode 49 = less greater backslash backslash backslash" in "$HOME/.Xmodmap" and run "xmodmap .Xmodmap" - this will setup your keys on the system.
To make these keys persistent run: "xkbcomp $DISPLAY $HOME/.xkbmap"
Very interesting: https://medium.com/@saplos123456/persistent-keyboard-mapping-on-ubuntu-using-xmodmap-cd01ad828fcd
If you have the black screen of death when trying to get back from suspend mode, you might want to check out this bug description and possible resolutions: https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1849084
Otherwise disable compositor: qdbus org.kde.KWin /Compositor suspend
Check if compositor is enabled: qdbus org.kde.KWin /Compositor org.kde.kwin.Compositing.active
Or: qdbus org.kde.KWin /KWin supportInformation
linux /boot/vmlinuz-5.4.0-31-generic root=UUID=24f1138b-2ab3-4617-a4aa-db3f37107cbc ro
Removed quiet splash $vt_handoff
Here is what I needed to do to get my audio devices found by my Kubuntu 20.04 focal installation.
First install this patch, and see if things start working: https://launchpad.net/~kaihengfeng/+archive/ubuntu/fix-lp1869819
If not then follow the instructions:
sudo apt install alsa-tools-gui
Run hdajackretask
Parser hints > jack_detect = no
Apply now
Install boot override
