Problema com Boot Repair [RESOLVIDO]

Minha gente, oi. Seguinte.. Uns meses atrás eu instalei o o linux mint 19.3 cinnamon, com 5.4.0-42-generic.. aí que começou a dar erro quando eu tentava salvar arquivos no libbreoffice e problema na inicialização do sistema. Um dia fui tentar entrar e aparecia o seguinte:
1.301019] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20190816/psargs-330)
[ 1.304023] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error
[ 1.304178] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.H
[ 1.304185] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error
[ 1.304257]
ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.H
[ 1.304263] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error
[ 1.304321]ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.H
[ 1.304326] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error
BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3.2) built-in shell (ash)
Enter 'help' for a list of built-in commands
(initramfs)

Um usuário me sugeriu dar um fsck manual no sda2. Eu fiz, deu certo. Só que comecei a ter que fazer toda vez que eu ligava. Eu sabia que mais dia, menos dia, ia zicar tudo - só que eu tô escrevendo minha tese de doutorado, então tava só ignorando a parada. Ontem, quando liguei, deu uma tela bem matrix, com números malucos rodando a tela. Desliguei no botão, consegui acessar o modo gráfico pela inicialização de segurança, formatei o pc e instalei o Linux Mint 20 Cinnamon. Acontece que quando eu fui dar o boot para instalar, já apareceram várias mensagens, mas muito rápido, não consegui ver o que era. Instalei normal. Agora, toda vez que eu ligo, aparece essa tela com mensagens muito rápidas, demora para inicializar, mas rola. Então instalei o boot repair (relatório abaixo), deu esse erro, e agora ele não desliga mais, só quando eu aperto o botão. Será que alguém consegue me ajudar?

boot-repair-4ppa125 [20201111_1401]
============================= Boot Repair Summary ==============================
Default settings: ______________________________________________________________
The default repair of the Boot-Repair utility would reinstall the grub-efi-amd64-signed of
sda2,
using the following options: sda1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s use-standard-efi-file restore-efi-backups
Final advice in case of suggested repair: ______________________________________
Please do not forget to make your UEFI firmware boot on the o SO atualmente em uso - Linux Mint 20 CurrentSession entry (sda1/efi/****/shim****.efi (**** will be updated in the final message) file) !
User settings: _________________________________________________________________
/usr/share/boot-sav/bs-cmd_terminal.sh: linha 177: aviso: substituição de comando: byte nulo ignorado na entrada
The settings chosen by the user will reinstall the grub-efi-amd64-signed of
sda2,
using the following options: sda1/boot/efi, add-kernel-option (acpi=off),
Additional repair will be performed: unhide-bootmenu-10s use-standard-efi-file restore-efi-backups
/boot/efi added in sda2/fstab
rm /boot/efi/efi/Boot/bootx64.efi
mv /boot/efi/efi/Boot/bkpbootx64.efi /boot/efi/efi/Boot/bootx64.efi
sda2/boot/efi not empty
add_kernel_option CHOSEN_KERNEL_OPTION is : acpi=off
Added kernel options in sda2/etc/default/grub
================= Reinstall the grub-efi-amd64-signed of sda2 ==================
grub-install --version
grub-install (GRUB) 2.04-1ubuntu26.6
efibootmgr -v from chroot before grub install
BootCurrent: 0000
Timeout: 0 seconds
BootOrder: 0000,0003,0001
Boot0000* ubuntu HD(1,GPT,7ad526ad-8d5b-4c12-b89c-5e6ed9b71692,0x800,0x100000)/File(EFIubuntushimx64.efi)
Boot0001* EFI USB Device (KingstonDataTraveler 2.0) PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(1,0)/HD(1,MBR,0x4089a39b,0x288,0x1f00)RC
Boot0003* Windows Boot Manager HD(1,GPT,ec212246-7662-4033-a1b8-dd9d1c1cd341,0x800,0xfa000)/File(EFIMicrosoftBootbootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
uname -r
5.4.0-53-generic
grub-install --efi-directory=/boot/efi --target=x86_64-efi --uefi-secure-boot
Installing for x86_64-efi platform.
Installation finished. No error reported.
df /dev/sda1
mv /boot/efi/EFI/Boot/bootx64.efi /boot/efi/EFI/Boot/bkpbootx64.efi
cp /boot/efi/EFI/ubuntu/shimx64.efi /boot/efi/EFI/Boot/bootx64.efi
grub-install --efi-directory=/boot/efi --target=x86_64-efi --uefi-secure-boot
Installing for x86_64-efi platform.
Installation finished. No error reported.
efibootmgr -v from chroot after grub install
BootCurrent: 0000
Timeout: 0 seconds
BootOrder: 0000,0003,0001
Boot0000* ubuntu HD(1,GPT,7ad526ad-8d5b-4c12-b89c-5e6ed9b71692,0x800,0x100000)/File(EFIubuntushimx64.efi)
Boot0001* EFI USB Device (KingstonDataTraveler 2.0) PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(1,0)/HD(1,MBR,0x4089a39b,0x288,0x1f00)RC
Boot0003* Windows Boot Manager HD(1,GPT,ec212246-7662-4033-a1b8-dd9d1c1cd341,0x800,0xfa000)/File(EFIMicrosoftBootbootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Error: NVram is locked (Linuxmint not found in efibootmgr).
update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.4.0-53-generic
Found initrd image: /boot/initrd.img-5.4.0-53-generic
Found linux image: /boot/vmlinuz-5.4.0-26-generic
Found initrd image: /boot/initrd.img-5.4.0-26-generic
File descriptor 63 (pipe:[42812]) leaked on lvs invocation. Parent PID 14230: /bin/sh
Adding boot menu entry for UEFI Firmware Settings
Unhide GRUB boot menu in sda2/boot/grub/grub.cfg
Ocorreu um erro durante a reparação.
Locked-NVram detectado.
============================ Boot Info After Repair ============================
=> No boot loader is installed in the MBR of /dev/sda.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/bkpbootx64.efi /efi/BOOT/bootx64.efi
/efi/BOOT/fbx64.efi /efi/BOOT/grubx64.efi
/efi/BOOT/mmx64.efi /efi/ubuntu/grubx64.efi
/efi/ubuntu/mmx64.efi /efi/ubuntu/shimx64.efi
/efi/ubuntu/grub.cfg
sda2: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Linux Mint 20
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
================================ 1 OS detected =================================
OS#1: o SO atualmente em uso - Linux Mint 20 CurrentSession on sda2
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.4.0-53-generic root=UUID=8b1bfded-b682-4421-8b50-e2246fcb5893 ro quiet splash
===================================== UEFI =====================================
BIOS is EFI-compatible, and is setup in EFI-mode for this installed-session.
SecureBoot disabled.
efibootmgr -v
BootCurrent: 0000
Timeout: 0 seconds
BootOrder: 0000,0003,0001
Boot0000* ubuntu HD(1,GPT,7ad526ad-8d5b-4c12-b89c-5e6ed9b71692,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
Boot0001* EFI USB Device (KingstonDataTraveler 2.0) PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(1,0)/HD(1,MBR,0x4089a39b,0x288,0x1f00)RC
Boot0003* Windows Boot Manager HD(1,GPT,ec212246-7662-4033-a1b8-dd9d1c1cd341,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
78415fb8fb9b909f8029858113f1335f sda1/BOOT/bkpbootx64.efi
78415fb8fb9b909f8029858113f1335f sda1/BOOT/bootx64.efi
2895d47544fd587b26c7e29be1295c27 sda1/BOOT/fbx64.efi
d8b4b9ae3018b1f4612611be7f42507a sda1/BOOT/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/BOOT/mmx64.efi
d8b4b9ae3018b1f4612611be7f42507a sda1/ubuntu/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/ubuntu/mmx64.efi
78415fb8fb9b909f8029858113f1335f sda1/ubuntu/shimx64.efi
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
sda : is-GPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
sda2 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, farbios
sda1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
Partitions info (2/3): _________________________________________________________
sda2 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
sda1 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
Partitions info (3/3): _________________________________________________________
sda2 : not-sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sda
sda1 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda
fdisk -l (filtered): ___________________________________________________________
Disk sda: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk identifier: B3B16B9A-158D-4BAB-8116-A82AD05024B2
Start End Sectors Size Type
sda1 2048 1050623 1048576 512M EFI System
sda2 1050624 976771071 975720448 465.3G Linux filesystem
parted -lm (filtered): _________________________________________________________
sda:500GB:scsi:512:4096:gpt:ATA TOSHIBA MQ02ABF0:;
1:1049kB:538MB:537MB:fat32:EFI System Partition:boot, esp;
2:538MB:500GB:500GB:ext4::;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
sda
├─sda1 vfat 9C11-2CC8 7ad526ad-8d5b-4c12-b89c-5e6ed9b71692 EFI System Partition
└─sda2 ext4 8b1bfded-b682-4421-8b50-e2246fcb5893 602609c6-68bd-46af-aafa-c77d3b9f717e
df (filtered): _________________________________________________________________
Avail Use% Mounted on
sda2 411G 5% /
Mount options: __________________________________________________________________
sda2 rw,relatime,errors=remount-ro
===================== sda1/efi/ubuntu/grub.cfg (filtered) ======================
search.fs_uuid 8b1bfded-b682-4421-8b50-e2246fcb5893 root hd0,gpt2
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
====================== sda2/boot/grub/grub.cfg (filtered) ======================
Ubuntu 8b1bfded-b682-4421-8b50-e2246fcb5893
Ubuntu, with Linux 5.4.0-53-generic 8b1bfded-b682-4421-8b50-e2246fcb5893
Ubuntu, with Linux 5.4.0-26-generic 8b1bfded-b682-4421-8b50-e2246fcb5893
### END /etc/grub.d/30_os-prober ###
UEFI Firmware Settings uefi-firmware
### END /etc/grub.d/30_uefi-firmware ###
========================== sda2/etc/fstab (filtered) ===========================
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda2 during installation
UUID=8b1bfded-b682-4421-8b50-e2246fcb5893 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
/swapfile none swap sw 0 0
UUID=9C11-2CC8 /boot/efi vfat defaults 0 1
======================= sda2/etc/default/grub (filtered) =======================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"
GRUB_CMDLINE_LINUX=""
==================== sda2: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
80.657123566 = 86.604926976 boot/grub/grub.cfg 1
8.277477264 = 8.887873536 boot/vmlinuz 1
4.800895691 = 5.154922496 boot/vmlinuz-5.4.0-26-generic 1
8.277477264 = 8.887873536 boot/vmlinuz-5.4.0-53-generic 1
4.800895691 = 5.154922496 boot/vmlinuz.old 1
2.997028351 = 3.218034688 boot/initrd.img 1
8.719722748 = 9.362731008 boot/initrd.img-5.4.0-26-generic 3
2.997028351 = 3.218034688 boot/initrd.img-5.4.0-53-generic 1
8.719722748 = 9.362731008 boot/initrd.img.old 3
===================== sda2: ls -l /etc/grub.d/ (filtered) ======================
-rwxr-xr-x 1 root root 17622 out 1 12:19 10_linux
-rwxr-xr-x 1 root root 42359 out 1 12:19 10_linux_zfs
-rwxr-xr-x 1 root root 12894 abr 15 2020 20_linux_xen
-rwxr-xr-x 1 root root 12059 abr 15 2020 30_os-prober
-rwxr-xr-x 1 root root 1424 abr 15 2020 30_uefi-firmware
-rwxr-xr-x 1 root root 214 abr 15 2020 40_custom
-rwxr-xr-x 1 root root 216 abr 15 2020 41_custom
=============================== StdErr Messages ================================
File descriptor 63 (pipe:[42812]) leaked on lvs invocation. Parent PID 2037: /bin/bash

Vamos olhar os logs do shutdown
journalctl -rb -1
Se a saídafor mto grande rode
journalctl -rb -1 | head -n 20
Qto ao bootrepair vamos ver se os problemas estão relacionados.

-- Logs begin at Wed 2020-11-11 11:52:50 -03, end at Thu 2020-11-12 10:38:30 -0>
nov 12 10:09:43 hima-Inspiron-7348 systemd-journald[369]: Journal stopped
nov 12 10:09:43 hima-Inspiron-7348 systemd-shutdown[1]: Sending SIGTERM to rema>
nov 12 10:09:43 hima-Inspiron-7348 systemd-shutdown[1]: Syncing filesystems and>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Shutting down.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Reboot.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Finished Reboot.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-reboot.service: Succeede>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Final Step.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Finished Shuts down the "live" p>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: casper.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Starting Shuts down the "live" p>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Shutdown.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Monitoring of LVM2 mirro>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: lvm2-monitor.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Remount Root and Kernel >
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-remount-fs.service: Succ>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Create System Users.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-sysusers.service: Succee>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Create Static Device Nod>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-tmpfiles-setup-dev.servi>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopping Monitoring of LVM2 mirr>
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped target Local File System>
lines 1-23...skipping...
-- Logs begin at Wed 2020-11-11 11:52:50 -03, end at Thu 2020-11-12 10:38:30 -03. --
nov 12 10:09:43 hima-Inspiron-7348 systemd-journald[369]: Journal stopped
nov 12 10:09:43 hima-Inspiron-7348 systemd-shutdown[1]: Sending SIGTERM to remaining processes...
nov 12 10:09:43 hima-Inspiron-7348 systemd-shutdown[1]: Syncing filesystems and block devices.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Shutting down.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Reboot.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Finished Reboot.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-reboot.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Final Step.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Finished Shuts down the "live" preinstalled system cleanly.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: casper.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Starting Shuts down the "live" preinstalled system cleanly...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Shutdown.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: lvm2-monitor.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Remount Root and Kernel File Systems.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-remount-fs.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Create System Users.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-sysusers.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Create Static Device Nodes in /dev.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-tmpfiles-setup-dev.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopping Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped target Local File Systems (Pre).
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Removed slice system-systemd\x2dfsck.slice.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped File System Check on /dev/disk/by-uuid/9C11-2CC8.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-fsck@dev-disk-by\x2duuid-9C11\x2d2CC8.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Reached target Unmount All Filesystems.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Unmounted /boot/efi.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: boot-efi.mount: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Unmounting /boot/efi...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped target Local File Systems.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Create Volatile Files and Directories.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-tmpfiles-setup.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Update UTMP about System Boot/Shutdown.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-update-utmp.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Removed slice system-systemd\x2dbacklight.slice.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-backlight@backlight:intel_backlight.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Deactivated swap /swapfile.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: swapfile.swap: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Network Time Synchronization.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-timesyncd.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopping Update UTMP about System Boot/Shutdown...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopping Network Time Synchronization...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Load Kernel Modules.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-modules-load.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopped Apply Kernel Variables.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: systemd-sysctl.service: Succeeded.
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
nov 12 10:09:43 hima-Inspiron-7348 systemd[1]: Deactivating swap /swapfile...

Por sugestão eu fui dar uma olhada na BIOS, e percebi que tava com o boot em legacy, troquei para UEFI, desativei a opção secure boot, rodei o boot repair, ainda assim nada (Como desde ontem tá isso de não desligar e eu tive que entrar na Bios algumas vezes, liguei e desliguei rapidamente pelo botão).

Nao sei se essa tela aqui ajuda algo... quando eu tento desligar, fica com a logo do mint, se eu aperto alguma tecla f, aparece ela

COnsegui resolver a questão do desligar e dar reboot da seguinte forma. Me foi sugerido que poderia ser uma questão de ACPI - o meu tava off. Só que no BIOS não existia a opção de gerenciamento de energia, então eu mexi editando as configurações do grub.
na linha GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off" tentei colocar acpi=force (sugestão num tutorial) não deu certo, coloquei acpi=on daí ele tá rebootando e desligando normal. Para ligar ainda tá demorando mais do que o esperado e aparecem mensagens rápidas na tela (que eu não consigo ler).. não sei se é algo que eu posso só ignorar ou que vai zuar tudo daqui em pouco tempo.

As mensagens q vc colocou no 1o post ainda permanecem?
Para analisar o tempo de boot digite
systemd-analyze blame
P analisar msgs de erro digite
dmesg --level=err, warn

Sim, continuam. e são de ACPI ó. Você tem ideia do que pode ser?
(ah, obrigada pela ajuda!)

[ 0.000000] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000009d800000-0x000000009fffffff], contact BIOS vendor for fixes
[ 0.510904] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.510957] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.511130] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.511179] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.511286] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.511333] ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.511432] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.511480] ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 5.498347] Bluetooth: hci0: unexpected event for opcode 0xfc2f

Atualizei a BIOS da Dell, mas as mensagens de erro continuam.
o comando err, deu essa saída:
[ 0.000000] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000009d800000-0x000000009fffffff], contact BIOS vendor for fixes
[ 0.517875] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.517927] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.518100] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.518147] ACPI Error: Aborting method \_TZ.TZ00._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.518253] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.518300] ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
[ 0.518398] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.HEC.ECRD], AE_NOT_FOUND (20200528/psargs-330)
[ 0.518445] ACPI Error: Aborting method \_TZ.TZ01._TMP due to previous error (AE_NOT_FOUND) (20200528/psparse-529)


o comando warn deu essa saída aqui:


[ 0.000000] Malformed early option 'acpi'
[ 0.000000] DMAR: [Firmware Bug]: Your BIOS is broken; bad RMRR [0x000000009d800000-0x000000009fffffff]
BIOS vendor: Dell Inc.; Ver: A15; Product Version: A15
[ 0.016028] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details.
[ 0.016161] #3
[ 0.020768] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[ 0.211505] pci 0000:00:14.0: can't derive routing for PCI INT A
[ 0.211506] pci 0000:00:14.0: PCI INT A: no GSI - using ISA IRQ 7
[ 0.517925] No Local Variables are initialized for Method [_TMP]
[ 0.517926] No Arguments are initialized for method [_TMP]
[ 0.518145] No Local Variables are initialized for Method [_TMP]
[ 0.518146] No Arguments are initialized for method [_TMP]
[ 0.518298] No Local Variables are initialized for Method [_TMP]
[ 0.518299] No Arguments are initialized for method [_TMP]
[ 0.518443] No Local Variables are initialized for Method [_TMP]
[ 0.518444] No Arguments are initialized for method [_TMP]
[ 0.546531] platform eisa.0: EISA: Cannot allocate resource for mainboard
[ 0.546532] platform eisa.0: Cannot allocate resource for EISA slot 1
[ 0.546533] platform eisa.0: Cannot allocate resource for EISA slot 2
[ 0.546534] platform eisa.0: Cannot allocate resource for EISA slot 3
[ 0.546535] platform eisa.0: Cannot allocate resource for EISA slot 4
[ 0.546536] platform eisa.0: Cannot allocate resource for EISA slot 5
[ 0.546536] platform eisa.0: Cannot allocate resource for EISA slot 6
[ 0.546537] platform eisa.0: Cannot allocate resource for EISA slot 7
[ 0.546538] platform eisa.0: Cannot allocate resource for EISA slot 8
[ 1.064299] i2c_hid i2c-DLL0675:00: supply vdd not found, using dummy regulator
[ 1.064318] i2c_hid i2c-DLL0675:00: supply vddl not found, using dummy regulator
[ 1.092527] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found
[ 1.094085] xhci_hcd 0000:00:14.0: can't derive routing for PCI INT A
[ 1.094088] xhci_hcd 0000:00:14.0: PCI INT A: no GSI - using ISA IRQ 7
[ 1.104660] usb: port power management may be unreliable
[ 4.348477] Started bpfilter
[ 5.030587] at24 1-0050: supply vcc not found, using dummy regulator
[ 5.184417] iwlwifi 0000:01:00.0: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
[ 5.252624] uvcvideo 2-5:1.0: Entity type for entity Extension 4 was not initialized!
[ 5.252627] uvcvideo 2-5:1.0: Entity type for entity Extension 3 was not initialized!
[ 5.252628] uvcvideo 2-5:1.0: Entity type for entity Processing 2 was not initialized!
[ 5.252630] uvcvideo 2-5:1.0: Entity type for entity Camera 1 was not initialized!
[ 5.327186] thermal thermal_zone7: failed to read out thermal zone (-61)
[ 7.006633] iwlwifi 0000:01:00.0: FW already configured (0) - re-configuring
[ 61.338990] [UFW BLOCK] IN=wlp1s0 OUT= MAC=01:00:5e:00:00:01:a8:6a:bb:c8:ce:be:08:00 SRC=192.168.0.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=25310 DF PROTO=2

Olá, houve alguma solução definitiva para este problema?

Pergunto para evitar abrir novo tópico, estou com um problema semelhante.

Então, eu voltei para o Mint 19 e pro kernel 4.15; provavelmente foi um problema na isntalação do 20 ou uma incompatibilidade de kernel com a máquina (que é de 2015). também existe a possibilidade deu estar tendo erros no HD, então to planejando trocar por um SDD em breve.