Le Boot-info dont tu as donné le lien (
https://paste.ubuntu.com/p/dMm5Y4hqWg/ ) dans le post #13 est là :
boot-info-4ppa124 [20200602_0926]
============================== Boot Info Summary ===============================
=> No boot loader is installed in the MBR of /dev/nvme0n1.
nvme0n1p1: _____________________________________________________________________
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/fbx64.efi /efi/BOOT/mmx64.efi
/efi/ubuntu/grubx64.efi /efi/ubuntu/mmx64.efi
/efi/ubuntu/shimx64.efi /efi/ubuntu/grub.cfg
nvme0n1p2: _____________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 20.04 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
================================ 1 OS detected =================================
OS#1: L'OS actuellement utilisé - Ubuntu 20.04 LTS CurrentSession on nvme0n1p2
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.4.0-31-generic root=UUID=bb44dfec-1040-4479-9792-128dfbd4b745 ro quiet splash vt.handoff=7
===================================== UEFI =====================================
BIOS is EFI-compatible, and is setup in EFI-mode for this installed-session.
SecureBoot disabled.
efibootmgr -v
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0001,0002
Boot0000* ubuntu HD(1,GPT,728189e5-92e3-4acb-899b-d3ab0e87f011,0x800,0x100000)/File(\EFI\UBUNTU\SHIMX64.EFI)
Boot0001* UEFI: PXE IP4 Killer E2600 Gigabit Ethernet Controller PciRoot(0x0)/Pci(0x1,0x4)/Pci(0x0,0x0)/MAC(00d86189b51f,0)/IPv4(0.0.0.00.0.0.0,0,0)..BO
Boot0002* UEFI: PXE IP6 Killer E2600 Gigabit Ethernet Controller PciRoot(0x0)/Pci(0x1,0x4)/Pci(0x0,0x0)/MAC(00d86189b51f,0)/IPv6([::]:<->[::]:,0,0)..BO
bed45d1c9554cea09924d3814cb7c446 nvme0n1p1/BOOT/fbx64.efi
4487628005555bfd4a4c0a47211e0700 nvme0n1p1/BOOT/mmx64.efi
98bea152fadd26c4e9136916f6cc32a8 nvme0n1p1/ubuntu/grubx64.efi
4487628005555bfd4a4c0a47211e0700 nvme0n1p1/ubuntu/mmx64.efi
f7a57b08bc7c1c85417ae4cea582d1d4 nvme0n1p1/ubuntu/shimx64.efi
f7a57b08bc7c1c85417ae4cea582d1d4 nvme0n1p1/BOOT/BOOTX64.efi
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
nvme0n1 : is-GPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
nvme0n1p2 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, farbios
nvme0n1p1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
Partitions info (2/3): _________________________________________________________
nvme0n1p2 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
nvme0n1p1 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
Partitions info (3/3): _________________________________________________________
nvme0n1p2 : not-sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, nvme0n1
nvme0n1p1 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, nvme0n1
fdisk -l (filtered): ___________________________________________________________
Disk nvme0n1: 476.96 GiB, 512110190592 bytes, 1000215216 sectors
Disk identifier: EC6D3D5B-377A-40A1-82F0-7CE14D5C7E43
Start End Sectors Size Type
nvme0n1p1 2048 1050623 1048576 512M EFI System
nvme0n1p2 1050624 1000214527 999163904 476.4G Linux filesystem
parted -lm (filtered): _________________________________________________________
nvme0n1:512GB:nvme:512:512:gpt:SAMSUNG MZVLB512HAJQ-00000:;
1:1049kB:538MB:537MB:fat32:EFI System Partition:boot, esp;
2:538MB:512GB:512GB:ext4::;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
nvme0n1
├─nvme0n1p1 vfat E2D8-DC63 728189e5-92e3-4acb-899b-d3ab0e87f011 EFI System Partition
└─nvme0n1p2 ext4 bb44dfec-1040-4479-9792-128dfbd4b745 26c499b3-83dd-40ed-9f2c-4163a2a04163
df (filtered): _________________________________________________________________
Avail Use% Mounted on
nvme0n1p2 435.2G 2% /
Mount options: __________________________________________________________________
nvme0n1p2 rw,relatime,errors=remount-ro
=================== nvme0n1p1/efi/ubuntu/grub.cfg (filtered) ===================
search.fs_uuid bb44dfec-1040-4479-9792-128dfbd4b745 root
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
=================== nvme0n1p2/boot/grub/grub.cfg (filtered) ====================
Ubuntu bb44dfec-1040-4479-9792-128dfbd4b745
Ubuntu, avec Linux 5.4.0-31-generic bb44dfec-1040-4479-9792-128dfbd4b745
Ubuntu, avec Linux 5.4.0-26-generic bb44dfec-1040-4479-9792-128dfbd4b745
### END /etc/grub.d/30_os-prober ###
UEFI Firmware Settings uefi-firmware
### END /etc/grub.d/30_uefi-firmware ###
======================== nvme0n1p2/etc/fstab (filtered) ========================
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/nvme0n1p2 during installation
UUID=bb44dfec-1040-4479-9792-128dfbd4b745 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=E2D8-DC63 /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0
==================== nvme0n1p2/etc/default/grub (filtered) =====================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
================= nvme0n1p2: Location of files loaded by Grub ==================
GiB - GB File Fragment(s)
334,637619019 = 359,314407424 boot/grub/grub.cfg 3
6,043087006 = 6,488715264 boot/vmlinuz 1
4,829097748 = 5,185204224 boot/vmlinuz-5.4.0-26-generic 2
6,043087006 = 6,488715264 boot/vmlinuz-5.4.0-31-generic 1
4,829097748 = 5,185204224 boot/vmlinuz.old 2
5,595863342 = 6,008512512 boot/initrd.img 1
5,548984528 = 5,958176768 boot/initrd.img-5.4.0-26-generic 1
5,595863342 = 6,008512512 boot/initrd.img-5.4.0-31-generic 1
5,548984528 = 5,958176768 boot/initrd.img.old 1
=================== nvme0n1p2: ls -l /etc/grub.d/ (filtered) ===================
-rwxr-xr-x 1 root root 17123 abr 15 13:31 10_linux
-rwxr-xr-x 1 root root 42128 abr 15 13:31 10_linux_zfs
-rwxr-xr-x 1 root root 12894 abr 15 13:31 20_linux_xen
-rwxr-xr-x 1 root root 12059 abr 15 13:31 30_os-prober
-rwxr-xr-x 1 root root 1424 abr 15 13:31 30_uefi-firmware
-rwxr-xr-x 1 root root 214 abr 15 13:31 40_custom
-rwxr-xr-x 1 root root 216 abr 15 13:31 41_custom
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would reinstall the grub-efi-amd64-signed of
nvme0n1p2,
using the following options: nvme0n1p1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s use-standard-efi-file
Final advice in case of suggested repair: ______________________________________
Please do not forget to make your UEFI firmware boot on the L'OS actuellement utilisé - Ubuntu 20.04 LTS CurrentSession entry (nvme0n1p1/efi/****/shim****.efi (**** will be updated in the final message) file) !
Tout est parfaitement normal dans ce Boot-info. Il n'y a pas de paramètre de noyau passé au démarrage autre que les paramètres habituels (*) comme on peut le voir dans cet extrait :
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.4.0-31-generic root=UUID=bb44dfec-1040-4479-9792-128dfbd4b745 ro quiet splash vt.handoff=7
Je ne suis pas assez expérimenté dans les problèmes graphiques pour t'aider à résoudre ton problème de HDMI non detecté.
(*) c'est à dire, les paramètres "quiet splash"