I’m currently using Ubuntu 24.04 on Acer Aspire Lite AL15G 52 and trying to downgrade to Ubuntu 22.04 by booting from a USB drive, however during the boot process from the USB the system freezes at a black screen with the following boot messages.
[ 2.826655] scsi 0:0:0:0: Direct-Access SanDisk SanDisk 3.2 Gen1 DL17 PQ
: 0 ANSI: 6
[ 2.827507] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 2.828378] sd 0:0:0:0: [sda] 244457472 512-byte logical blocks: (125 GB/117 GiB)
[ 2.828780] sd 0:0:0:0: [sda] Write Protect is off
[ 2.828795] sd 0:0:0:0: [sda] Mode Sense: 45 00 00 00
[ 2.829118] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[ 2.894887] GPT:Primary header thinks Alt. header is not at the end of the disk.
[ 2.894898] GPT:9799523 != 244457471
[ 2.894903] GPT:Alternate GPT header not at the end of the disk.
[ 2.894907] GPT:9799523 != 244457471
[ 2.894911] GPT: Use GNU Parted to correct GPT errors.
[ 2.894925] sda: sda1 sda2 sda3
[ 2.895411] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 3.552325] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 1
[ 3.554854] ACPI: video: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 3.555281] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/
LNXVIDEO:00/input/input11
[ 3.555752] vga_switcheroo: enabled
[ 3.557761] fbcon: i915drmfb (fb0) is primary device
[ 3.560959] Console: switching to colour frame buffer device 240x67
[ 3.572091] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
_
I created the iso image using "dd" with command: sudo dd if=ubuntu.iso of=/dev/sda status=progress bs=10M && sync but i don't think that's the issue here cause i installed Ubuntu 24.04 in the exact same way and boot settings and chose the option to erase disk (uninstall windows 11) and it worked.
Edit 1: I am trying to install ubuntu-22.04.4-desktop-amd64.iso and previously i installed ubuntu-24.04-desktop-amd64.iso without any issues with same boot settings.
Edit 2: Based on @oldfred's comment, here's the output of "gdisk" command:
$ sudo gdisk -l /dev/sda
GPT fdisk (gdisk) version 1.0.10
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 244457472 sectors, 116.6 GiB
Model: SanDisk 3.2 Gen1
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): ABBD44C4-640C-4CEA-ACCB-CA38273F602E
Partition table holds up to 248 entries
Main partition table begins at sector 2 and ends at sector 63
First usable sector is 64, last usable sector is 9799460
Partitions will be aligned on 4-sector boundaries
Total free space is 1 sectors (512 bytes)
Number Start (sector) End (sector) Size Code Name
1 64 9788791 4.7 GiB 0700 ISO9660
2 9788792 9798859 4.9 MiB EF00 Appended2
3 9798860 9799459 300.0 KiB 0700 Gap1
Apart from "dd", i also used "etcher" to flash the ISO again and even reflashed the ISO with "dd" again but cleared the partition table with: sudo wipefs --all /dev/sda this time to see if it works & encountered the same error in both cases. I even changed my USB to another one but that also resulted in same error so i assume it has nothing to do with the USB am using.