Getting Kernel panic "Asynchronous SError Interrupt" after upgrading to 6.12.0-1002.2

[Rad0van]

Getting kernel panic on boot after upgrading to 6.12.0-1002.2. However this happens also if 6.10.0-1001.1 is chosen and even in recovery mode. It is 24.10 KDE desktop upgraded from 24.04. Clueless what to do here. MacBook Pro Max M2.

[tobhe]

Sorry for that. Can you share the crash log? The more info we have the easier it will be to track down.

[Rad0van]

Sorry for that. Can you share the crash log? The more info we have the easier it will be to track down.

Gladly but I do not know how. It starts booting and then crashes to that pink screen. Is there some key sequence to show the boot log?

[theoparis]

I encountered the same issue here on a M2 MBP after updating Ubuntu. I do not know how to access the crash logs either, it shows a screen with a ASCII linux penguin at the top left and then says something along the lines of "kernel panic" and "reboot your computer". This seems to be the new DRM panic screen: https://www.phoronix.com/news/Linux-DRM-Panic-BSoD-Picture

[jmurudi]

I have also encountered same issue now.

[tobhe]

Working on a fix, I have removed the update from the PPA for now. The fact that selecting an older kernel doesn't work suggests that it might be a device tree problem. I'll let you all know once I know more.

[tobhe]

@theoparis @jmurudi are your devices also MacBook Pro Max M2?

[tobhe]

You could try restoring your previous m1n1 from macos for now and see if that helps.

1. Find your EFI partition:

diskutil list | grep EFI
   4:                        EFI EFI - UBUNT             500.2 MB   disk0s4

2. Mount it (don't copy verbatim, make sure the name is matches the partition found in the previous step)

diskutil mount /dev/disk0s4

3. Backup m1n1

cd /Volumes/EFI\ -\ UBUNT/m1n1
cp boot.bin* ~/

4. Restore boot.bin.old

mv boot.bin.old boot.bin

5. Reboot and see if Ubuntu boots now

[Rad0van]

You could try restoring your previous m1n1 from macos for now and see if that helps.

1. Find your EFI partition:

diskutil list | grep EFI
   4:                        EFI EFI - UBUNT             500.2 MB   disk0s4

2. Mount it (don't copy verbatim, make sure the name is matches the partition found in the previous step)

diskutil mount /dev/disk0s4

3. Backup m1n1

cd /Volumes/EFI\ -\ UBUNT/m1n1
cp boot.bin* ~/

4. Restore boot.bin.old

mv boot.bin.old boot.bin

5. Reboot and see if Ubuntu boots now

It does NOT unfortunately :-( Not even with older kernel. I have even tried upgrading MacOS to latest one.

[tobhe]

@Rad0van Looking at the drm panic documentation it looks like adding drm.panic_screen=kmsg to your kernel command line (via grub) might give us some more info.

I have a suspicion what might be causing it. There have been reports of similar errros caused by the controller for the sd-card reader. Try adding module_blacklist=sdhci_pci on the command line, that might fix it.

[Rad0van]

@Rad0van Looking at the drm panic documentation it looks like adding drm.panic_screen=kmsg to your kernel command line (via grub) might give us some more info.

I have a suspicion what might be causing it. There have been reports of similar errros caused by the controller for the sd-card reader. Try adding module_blacklist=sdhci_pci on the command line, that might fix it.

Blacklisting sdhci_pci does not help. DRM panic screen works, here's what it shows:

[tobhe]

So it isn't what I initially suspected. Do you think you can restore boot.bin from your macos home directory and see if the error is the same (to make sure we didn't break it by switching to the old one)?

[Rad0van]

So it isn't what I initially suspected. Do you think you can restore boot.bin from your macos home directory and see if the error is the same (to make sure we didn't break it by switching to the old one)?

AFAICT the same

[Rad0van]

I'm wondering what could have changed in a way it affects the system even if old(er) m1n1 and kernel is being used. What part of the system is affected / modified as well?

[nbosb]

I upgraded from Ubuntu 23.10 today and get exactly the same error on a Mac mini M2

[tobhe]

Thanks for all the help! I think we found the issue and are working on a fix to test. Issue seems to be related to AsahiLinux/linux@90356e1

@Rad0van I don't really have an explanation for why the old dtb and kernel don't work either but let's hope the fix still works.

[Rad0van]

Thanks for all the help! I think we found the issue and are working on a fix to test. Issue seems to be related to AsahiLinux/linux@90356e1

@Rad0van I don't really have an explanation for why the old dtb and kernel don't work either but let's hope the fix still works.

Nice. Would be happy to test. But would be curious on how to actually apply the fix...

[tobhe]

Our fix is an updated m1n1binary with the new device-trees included. You can test it by either manually downloading https://files.tobhe.de/ubuntu/m1n1.bin and copying it to your ESP as boot.bin as described above or simply run:
curl -F https://files.tobhe.de/ubuntu/fix-m1n1 | sh (from macos) which should do the same with less typing.

[Rad0van]

Our fix is an updated m1n1binary with the new device-trees included. You can test it by either manually downloading https://files.tobhe.de/ubuntu/m1n1.bin and copying it to your ESP as boot.bin as described above or simply run: curl -F https://files.tobhe.de/ubuntu/fix-m1n1 | sh (from macos) which should do the same with less typing.

Nice. Is the fix already available? Should I try it?

[tobhe]

This should already work, if you can test it that would be very helpful because we can't reproduce it locally (none of us has an m2 max). Once Ubuntu boots again it will probably want to downgrade the kernel. If everything goes well we will push another update including the fix.

[Rad0van]

And it WORKS! I needed to apply it manually as my partition is named EFI - ASAHI not EFI - UBUNTU but it works. Thanks a lot!

[tobhe]

Great :) I'll try to adjust that script and we will make sure to ship an updated kernel later today. Thank you so much for your help debugging this!

[john-cabaj]

@Rad0van @nbosb @jmurudi @theoparis - just published a new kernel, 6.12.0-1004.4. It should be available for releases 24.04 and newer. Let me know if you have any issues with it, and thanks for the issue reports!

[nbosb]

i just updated to the new kernel. it seems to work fine on my machine. thanks for the support and the quick fix!

[Rad0van]

Works fine for me.