24.04 beta: Subiquity fails with "Something went wrong"

[Hadmut Danisch]

Hi,

I was trying to freshly install today's Ubuntu 24.04 beta Desktop on a Fujitsu U727 Notebook with Core i5-6200U and 8GB RAM. (.iso on USB pen drive)

Live-Desktop comes up.

When starting the Installer, no matter whether the link on the desktop or the one in the left quickstart panel, I immediately get a window with an error message "Something went wrong".

and

"We're sorry, but we're not sure what the error is."

Unfortunately, I am not sure either.

[Dan Bungert (dbungert)]

Hi Hadmut Danisch, thanks for the report.

There isn't much to go on here, or even that the failure was related to the Installer itself. At that crash dialog should be an option to collect data and report, or if that isn't happening, a tarball of the contents of /var/log/installer would be good. With that information we can start to debug.

[Hadmut Danisch (hadmut)]

That hint was good. The machine is not running anymore, I've installed Kubuntu 24.04 beta meanwhile, but fortunately used another USB pendrive.

On the pendrive I used for the installation with the crash I found a log directory, which I'll attach.

[Hadmut Danisch (hadmut)]

The kernel log mentions lines like

python3.10[11739]: segfault at 1 ip 00007ea0a0d55720 sp 00007ffdb18770f0 error 4 in _nl80211.cpython-310-x86_64-linux-gnu.so[7ea0a0d55000+2000] likely on CPU 1 (core 1, socket 0)

[Dan Bungert (dbungert)]

Hi Hadmut,

Thanks for the logs.

I can see that the installer process is crashing multiple times a second. That's definitely not normal!
 I'm considering the possibility that you have a bad ISO download or a bad USB drive.

From your updates it sounds like you handled that already and used a different usb drive.
I think we can call this resolved and close this bug. If you were to try to plug your original key into a device and boot it I wager you'd see the same result, but don't feel obligated. I'm going to mark the bug incomplete for now, which will let the bug close in 60 days, and if we get more info we can reverse that.

[Hadmut Danisch (hadmut)]

I've verified the download against SHA256SUMS before writing to the USB drive.

The drive is quite new, I bought 20 of them, and never had any problem with any of them. I used a different one, because I have pendrives labeled with "Ubuntu Desktop", "Server", "Lubuntu", "Kubuntu". That's why I used a different one for installation of Kubuntu.

Maybe just wait a while whether there's more reports or not. If it's a real bug, there should be more reports coming in or people hitting "bug affects me".

Today it's late, and tomorrow I'm busy. Maybe on sunday or monday.

[Dan Bungert (dbungert)]

> I've verified the download against SHA256SUMS before writing to the USB drive.

OK good, we can rule out that part.

> The drive is quite new, I bought 20 of them

It might be worth trying writing that same ISO then to a different drive, and leaving the one that I suspect to the side.

> Maybe just wait a while whether there's more reports or not. If it's a real bug, there should be more reports coming in or people hitting "bug affects me".

I strongly agree. I chose to mark it "incomplete" here so that it would timeout if this appears to be a one-off glitch, or it should be easy to find again if we have reports that look similar.