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Reinstalling might certainly be the fastest way back to a working machine.
This may indicate other issues are in play. The successful update should have automatically placed you in a Wayland session; that being the new default. The fact that it didn’t leaves unanswered questions.
It’s possible that your system was already in an “unsupported state” before the update was applied – this can often lead to unpredictable consequences.
Without knowing what other factors might be in play, I would suggest this only be considered once you do have a guaranteed working system using Wayland.
However, if you wish to disregard the warning, and try it anyway, it may be possible via a chroot environment. Note that this can potentially lead to deeper complication, if it fails for any reason.
Information on entering chroot can be found here:
If you do decide to reinstall the system, I can offer the following:
1. It’s preferable to install using the latest available ISO. However, the ISOs on the Manjaro “Download” page are still the old ones. The currently recommended Stable ISO can be downloaded from Anh-Linh 25.1-pre1:
- Look for the ISO link under the heading “Anh-Linh 25.1-pre1 (2025-12-08)”
- The new stable release is expected soon; this ISO is recommended right now.
2. Also recommended – Create a Ventoy USB (A new bootable USB solution)
- If the system doesn’t support UEFI, look for the BIOS/MBR instructions in the guide.
3. Important – Read through the Stable Update Announcement thread – particularly the Known Issues and Solutions section – before installing:
4. A final note – Manjaro now defaults to the btrfs filesystem:
You might prefer to still use the ext4 filesystem, in which case you must pay careful attention during install, and make sure to manually select ext4. Likewise with your preferred swap.
Regards.