wiki-system/XPS-13-7390-2-in-1--.md

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Gentoo wiki - Dell XPS 13 2-in-1 (7390)
Ubuntu wiki - Dell XPS 13 2-in-1 (7390) Arch Linux - Dell XPS 13 2-in-1 (7390)

Bios setup

• have to disable Raid ... Enable AHCI
• Disable secure boot in bios to permit Hibernate

install ubuntu full ZFS

Boot the Ubuntu 20.04 Desktop installer/live CD. Click the “Try Ubuntu” button. launch a terminal

$ sudo su
# apt install ssh

set a passwd to root to permit remote ssh

# passwd
New password :
Retype new passord :
passwd: password updated successfully

Edit /etc/ssh/sshd_config to Enable PermitRootLogin change prohibit-password to yes like bellow.

#PermitRootLogin prohibit-password
PermitRootLogin yes

service ssh restart

find yout IP with : ip a

then connect remotely with : ssh

update zsys-setup

to enable zfs encryption and create a swap partition right sized for hibernation.

enable zfs encyption on rpool

bpool remain unencrypt.

Search for “zpool create”, and make sure you have found the create command that has “rpool” on the last line. Before the “zpool create” insert: echo MYPASSWORD | Before the last line of the command insert these lines:

        -O recordsize=1M \
        -O encryption=aes-256-gcm \
        -O keylocation=prompt \
        -O keyformat=passphrase \

in case you wanted to change zpool passwd

$ zfs change-key rpool

create swap partition to permit Hibernate

add theses 2 lines in : /usr/share/ubiquity/zsys-setup

MEMSIZE=$(cat /proc/meminfo | grep MemTotal | awk -F' ' '{print $2}')
SWAPVOLSIZE=$(( MEMSIZE / 1024 ))

like bellow :

	# Convert to MiB to align the size on the size of a block
	SWAPVOLSIZE=$(( SWAPSIZE / 1024 / 1024 ))
    
MEMSIZE=$(cat /proc/meminfo | grep MemTotal | awk -F' ' '{print $2}')
SWAPVOLSIZE=$(( MEMSIZE / 1024 ))

	prepare_target "${TARGET}"
	format_disk "${DISK}" "${PARTBASE}" "${PARTESP}" "${PARTBPOOL}" "${PARTRPOOL}" "${SWAPVOLSIZE}"
	init_zfs "${TARGET}" "${DISK}${PARTBASE}${PARTBPOOL}" "${DISK}${PARTBASE}${PARTRPOOL}"
	init_system_partitions "${TARGET}" "${DISK}${PARTBASE}1" "${DISK}${PARTBASE}${PARTESP}"

Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.

source : Linsomniac's Articles - Encrypting ZFS on Ubuntu 20.04

UHD screen

!!!
https://forum.xfce.org/viewtopic.php?id=13617
a essayer : xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 2
xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 2

Changer la taille de police dans les applications Qt sous Xfce

voir source : https://www.ezvan.fr/taille-police-qt.html

editer : ~/.Xresources : Ce fichier est utilisé par le serveur X pour configurer ses applications clientes.

!-------------------------------------------------------------------------------
! Xft settings
!-------------------------------------------------------------------------------

Xft.dpi:        240
Xft.antialias:  true
Xft.rgba:       rgb
Xft.hinting:    true
Xft.hintstyle:  hintslight
Xft.autohint:   false
Xft.lcdfilter:  lcddefault

Il faut ensuite utiliser la commande xrdb pour appliquer ces paramètres :

$ xrdb -merge ~/.Xresources

console grub ...

Boot menu uses a tiny font (GRUB menu).

Best way to address this would be to have GRUB automatically select the right font, but GRUB is kept small on purpose, or to install a larger GRUB font when installing Ubuntu.

Workaround: let the default GRUB terminal driver, gfxterm, switch to a supported mode such as 1600x1200 (NB to list video modes, disable secure mode in the BIOS and run the videoinfo command in the GRUB shell accessed by pressing "c" from the GRUB menu):

GRUB_GFXMODE=2048x1152

update-grub 

Splash screen uses too small logo and somewhat too small fonts (Plymouth).

Plymouth has logic to detect the proper scaling to apply, but it's still too small; workaround by forcing the scale on the kernel cmdline:

Add to GRUB_CMDLINE_LINUX in /etc/default/grub.

plymouth.force-scale=3

update-grub 

Console terminal uses too small fonts.

Note that the package shipping the Ubuntu Monospace font for the terminal, fonts-ubuntu-console, is not installed by default and only ships 8x16 fonts.

Change the font by running dpkg-reconfigure console-setup, select a font face that supports a larger font size, for instance the Terminus font, and select a large font size such as 16x32; you need to reboot for the new font to be set.

activate hibernation in system

Disable secure boot in bios to permit Hibernate.

souce :

update-initramfs -u -k $(uname -r)
pm-hibernate

Hiberner au bout de x secondes après une mise en veille

printf "RESUME=UUID=$(blkid | awk -F\" '/swap/ {print $2}')\n" | head -n 1| sudo tee /etc/initramfs-tools/conf.d/resume
update-initramfs -u -k all

change /etc/default/grub : add your resume UUID into GRUB_CMDLINE_LINUX_DEFAULT

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=75034ff5-...-9e4564e16d34"

kernel lockdown prevent hibernation :

encrypt swap partition

apt-get install ecryptfs-utils
apt install cryptsetup-bin
swapoff -a
cryptsetup luksFormat --cipher aes-xts-plain64 --verify-passphrase --key-size 256 /dev/nvme0n1p2

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/mapper/cryptswap1"

rotate

apt install iio-sensor-proxy

install : screen rotator : https://github.com/GuLinux/ScreenRotator

zpool trouble mount it from live systeme

boot on usb drive
zpool import -R /mnt rpool
zfs load-key rpool
zfs mount rpool/USERDATA/nomad_e8bdbt