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Created April 22, 2021 18:55
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ubuntu-20-10-notes.md

ubuntu 20.10 notes

problem: "initramfs unpacking failed: Decoding failed" in sudo dmesg --level=err,warn output

try:

$ sudo nano /etc/initramfs-tools/initramfs.conf
COMPRESS=gzip
$ sudo update-initramfs -u -k all

then, reboot.

[bug]

problem: "i8042: PNP: PS/2 appears to have AUX port disabled" in dmesg output

try:

$ sudo cp /etc/default/grub /etc/default/grub.backup
$ sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp"
$ sudo update grub

problem: window flickering and tearing in gui after kernel v5.8.0-50-generic update

try:

reboot, press ESC/Shift to get to grub boot menu, select "Advanced", boot with a previous kernel.

/usr/share/X11/xorg.conf.d/20-intel.conf

Section "Device"
  Identifier "Intel Graphics"
  Driver "intel"
  Option "AccelMethod" "uxa"
EndSection

[askubuntu]

[wiki.archlinux.org]

get system infomation: inxi -Fza --no-host

show supported video modes: xrandr -d :0

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