CoreMP135 Debian image

mgrouch

Ok. I got the device and I loaded Debian image M5_CoreMP135_debian12_20240628 from

https://docs.m5stack.com/en/guide/linux/coremp135/image

It did boot.
However, upon boot it didn't resize the root partition to occupy whole SD card.
As a result I can't install anything because there is no space.

I had to use fdisk to resize /root partition (#5 for me, making sure I use same starting block and preserve filesystem type, see https://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) and then
resisz2fs command (something like resize2fs /dev/mmcblk0p5).
It would be too hard for an average user to repeat that.

Also the kernel on it is very old. 5.15.118
On Raspberry Bookworm it is much newer. (6.x)

There are many errors related to USB reported by dmesg.
I have powered USB HUB and keyboard is connected via it.
Keyboard works though.

Is it possible for next versions to have image which would resize to SD card size?
Same way as Pi OS does?

Is it possible to have have newer linux kernel? I think USB errors might be related to old version of it.

Thanks

mgrouch

@mgrouch said in CoreMP135 Debian image:

Ok. I got the device and I loaded Debian image M5_CoreMP135_debian12_20240628 from

https://docs.m5stack.com/en/guide/linux/coremp135/image

It did boot.
However, upon boot it didn't resize the root partition to occupy whole SD card.
As a result I can't install anything because there is no space.

I had to use fdisk to resize /root partition (#5 for me, making sure I use same starting block and preserve filesystem type, see https://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) and then
resisz2fs command (something like resize2fs /dev/mmcblk0p5).
It would be too hard for an average user to repeat that.

Also the kernel on it is very old. 5.15.118
On Raspberry Bookworm it is much newer. (6.x)

There are many errors related to USB reported by dmesg.
I have powered USB HUB and keyboard is connected via it.
Keyboard works though.

Is it possible for next versions to have image which would resize to SD card size?
Same way as Pi OS does?

Is it possible to have have newer linux kernel? I think USB errors might be related to old version of it.

Thanks

USB errors were my fault. I plugged usb 3.0 hub into usb 2.0 port.

One more question:

What are the tty devices names of RS-485 and UART6 under /dev?

Thanks

ajb2k3

@teastain here is the dev directory listing

mgrouch

@ajb2k3

What is /dev/ttySTM2 ?

teastain

@ajb2k3 "But, for mine own part, it was Greek to me."
(Casca, Julius Caesar: Act 1, Scene 2)

ajb2k3

@mgrouch said in CoreMP135 Debian image:

ttySTM2

From what I can find, the /dev/ttystm0 2 and 3 could be UART ports

ajb2k3

@prima said in CoreMP135 Debian image:

The mDNS service aka Zeroconf aka Avahi aka Bonjour is already enabled on the device, so if you have the client tools installed on your PC you can connect in SSH using the .local address like this:
ssh root@M5Core135.local
M5Core135 is the default hostname.

I cant get a ssh login with the latest Debian release. the default password return access denied in SSH

ajb2k3

Finally getting around to looking at the GPIO's on the CoreMP135.
not getting far at the moment as it took all weekend to work out how to expand the OS to use the whole card then get it to install GPIOD.

mgrouch

What were the changes between

M5_CoreMP135_debian12_20240919

and

M5_CoreMP135_debian12_20240628

I can find it in github.

Thanks

ajb2k3

@mgrouch I don't have the slightest idea.
I run the apt update and apt upgrade to make sure I have the latest version.

JNVoirol

@ajb2k3
Hello, I have the same problem using latest image of the OS. When I try to login as root I got the message access denied. How did you handle this ?

ajb2k3

@JNVoirol I still haven't solved the ssh issue yet so still directly logging in.