@lduboeuf Guess what, I just tried to boot the Cooler and now it's not only stuck in a bootloop, I can't even break the loop with power + volume- which means I can't even shut it down anymore. As a result, I can neither switch to developer mode to flash it with an older build nor can I select the bootloader from the menu because power + volume+ doesn't work.
@Flohack do you have any ideas how to get the tablet to shut down? Currently, I could only hope for the battery to give out. Unfortunately, I can't seem to register a bug, because my atlassian account has no access to ubport's issue tracker.
Maybe BQ devices should be announced as not supported by OTA-25 until the issue is fixed.

Hold the on/off button for a long time, eventually it turns off.

@Flohack do you have any ideas how to get the tablet to shut down? Currently, I could only hope for the battery to give out. Unfortunately, I can't seem to register a bug, because my atlassian account has no access to ubport's issue tracker.
Maybe BQ devices should be announced as not supported by OTA-25 until the issue is fixed. :anxious_face_with_sweat:

Hello everyone!

The expected release date for Ubuntu Touch OTA-25 is Friday, March 24th 2023. Note that this is the last release of an OTA for xenial!

This forum post is a companion to the OTA-25 Call For Testing

Please post any general observations you have while testing the current image in the RC channel, as compared to OTA-24, in this thread. The current release candidate (RC) is 2023-W11.

If you have any comments on any of the specific issues in the OTA-25 tracker, please post them in the issue thread so they are easier to track. OTA-25 tracker: https://ubports.atlassian.net/browse/YUMI-6

Please note that only critical and security fixes will be able to enter OTA-25 as this point, normal bug fixes and new features will need to wait for our next release. Please do not discuss normal bug fixes and new features here.

@domubpkm
Strange this issue did not come out during RC...

Yes confirmed, when i've updated RC, there where no issues.
idk if any coincidence but there were issues on infrastructure during this time

Edit : ok i assumed restart works fine because i had not noticed problem here, but just tested and i got one bootloop and then a normal boot.

Edit : N5 also seems to be affected in a different way.
Sometime after a cold boot i get : bootlogo ("Nexus 5 powered by Ubuntu Touch....") then dark screen for 10 seconds, then bootlogo again, then dark screen, then Ubuntu Touch boots.
Other times i get bootlogo, dark screen, UT boots.

I resurrected my Nexus 5 to test this point. After updating to OTA-25 Stable, which went without a hitch, I performed three restarts and all of them worked just fine.

OTA-25 Stable

@Ællen Switching to stable solved the problem for a day and then it came back. Still/again need 2 attempts to boot the bq cooler.

Confirmed on the BQ4.5, cold start get stuck ( but not always )

need 2 attempts to boot the bq cooler

Same on MX4, cold boot results in stuck on the white bootlogo, forcing shut down and booting a second time works. No problem when rebooting from OS.

Edit : N5 also seems to be affected in a different way.
Sometime after a cold boot i get : bootlogo ("Nexus 5 powered by Ubuntu Touch....") then dark screen for 10 seconds, then bootlogo again, then dark screen, then Ubuntu Touch boots.
Other times i get bootlogo, dark screen, UT boots.

Since the last updates on RC channel (currently 2023-W12/3) my Sony Xperia X Compact (F5321) more often than not won't boot up properly.
Especially when cold booting it often, but not always, shows like this:
Sony boot loader warning → Sony boot logo → Ubuntu Touch boot logo (< 1 s) → black screen
A forced reboot might then work or will also hang at different points (Sony boot logo, black screen, or automatic reboot).

I've had boot up issues in the past with this device, but it definitely has gotten worse for me since the new updates.

OTA-24

OTA24 = Ohne Telefon Anschluss