After upgrading to Linux kernel 5.4.0-54-generic, I was unable to adjust my display brightness.

dmesg output shows i915 'Y' invalid for parameter 'enable_dpcd_backlight'

/etc/default/grub contains i915.enable_dpcd_backlight=Y for GRUB_CMDLINE_LINUX_DEFAULT.

Removing the i915.enable_dpcd_backlight=Y from GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub resolved the issue.

READ MORE

First, list the shares available from the server:

smbclient -L <server> -U <user>

Next, make sure cifs-utils is available (so we can pass in the credentials option):

sudo apt install cifs-utils

Finally, add the desired share to /etc/fstab:

//ip/share /mnt/point cifs …

READ MORE

Give your hand some relief from reaching for Ctrl and take advantage of the close proximity of Caps Lock.

# Note any previous values for xdb-options (most likely none) gsettings get org.gnome.desktop.input-sources xkb-options # Set our xkb-options (plus anything from our get, if needed) gsettings set org.gnome.desktop.input-sources xkb-options …

READ MORE

$ VBoxManage modifyhd YOUR_HARD_DISK.vdi --resize SIZE_IN_MB

Source: http://askubuntu.com/questions/88647/how-do-i-increase-the-hard-disk-size-of-the-virtual-machine

READ MORE

I went to update my Ubuntu machine today and found out there wasn't enough space on /boot to perform the update. You can remove older kernels to free up space:

// Check which kernel you're using $ uname -r // List all installed kernels # dpkg --list 'linux-image*' …

READ MORE

Unable to boot after kernel (3.19) upgrade on Ubuntu. Here's the fix:

1. Add copy_modules_dir kernel/ubuntu/i915 to /usr/share/initramfs-tools/hooks/framebuffer.
2. Then run update-initramfs -k all -u.
3. Profit.

Fix found here: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/1500751

READ MORE

Error:

The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.

Solution:

# dd if=/dev/zero of=/dev/sdb bs=2048

Source: http://askubuntu.com/questions/675649/unable-to-delete-usb-drive-partitions-block-size-error

READ MORE

Use dmesg after plugging in your USB thumb drive to find the device name (/dev/sdb).

# umount /media/username/devicename # dd bs=4M if=/path/to/filename.iso of=/dev/sdb

Note, do not output to a partition (e.g. /dev/sdb1). In the past this has created a loop device instead of copying the input file …

READ MORE

# apt-get install unattended-upgrades # dpkg-reconfigure --priority=low unattended-upgrades

More at https://help.ubuntu.com/community/AutomaticSecurityUpdates

READ MORE

Every once and a while, I lose network connectivity to the point where my NFS share is unmounted and, when remounted, the Desktop fills up with everything in ~/.

The problem lies in the file ~/.config/user-dirs.dirs. It should be as follows (for my setup):

XDG_DESKTOP_DIR="$HOME/Desktop" …

READ MORE