Ubuntu 22.04 with Kernel 5.4

yarmooh · March 2023

Hi,

I'm trying to upgrade existing installation of Ubuntu 18.04 to 22.04, but keep using upboard kernel 5.4 - because of compatibility issues I'm getting.

With Ubuntu 18.04 and kernel 5.4 I've got no issues with FBTFT screen and my FTDI board, but if I upgrade to 22.04 it comes with kernel 5.15, it boots fine, but FTDI does not work "Error occured: FTDI controller not initialized" and does not too, since lack of up2 gpio support in the kernel.
If I try to run kernel 5.4 from 18.04 OS does not boot at all, kernel panics on vfs: cannot open root device unknown block error -6

What may be the cause of it, or how can I port up2 kernel changes to kernel 5.15?

Wilbert · March 2023

HI Sir,

You can use ububntu original Kernel, it can be used normally.
To use the functions of HAT40, just install Pinctrl.

In order to allow customers to use it better, we have stopped updating the dedicated Kernel, and are currently moving towards the installation package to allow customers to use all the functions on the version.

Best Regards,
Wilbert Lee

rvandermate · March 2023

In order to allow customers to use it better, we have stopped updating the dedicated Kernel, and are currently moving towards the installation package to allow customers to use all the functions on the version.

@Wilbert, this is really intriguing!

You can use ububntu original Kernel, it can be used normally.

Are you suggesting that we can install plain Ubuntu 22.04 without needing to install the kernel packages suggested in the wiki?

To use the functions of HAT40, just install Pinctrl.

We'd like to use a newer Ubuntu (like 22.04) on our Up Squared Pro, but need to use the 40Pin Hat. There doesn't seem to be a package named Pinctrl or similar. Is this an package that needs to be installed or something different? Can you elaborate?

Thanks!

Wilbert · March 2023

Hi Sir,

The link is as follows
https://github.com/up-division/pinctrl-upboard/releases

Best Regards,
Wilbert

Lubo · March 2023

@Wilbert said:
Hi Sir,

The link is as follows
https://github.com/up-division/pinctrl-upboard/releases

Best Regards,
Wilbert

Hello Sir,
there is list of supported board versions, but it seems to me that UPBoard https://up-board.org/up/specifications/ is not supported by this solution. Is it ?

garyw · March 2023

@Lubo
the new pin controller driver not support up board yet, you can use the customization kernel from launchpad.

Wilbert · June 2023

Hi Sir,

Yes, he does not support UP Board.
What you are asking here is UP Squared, which is supported.

Best Regards,
Wilbert Lee

Ubuntu 22.04 with Kernel 5.4

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