reTerminal: black screen issue

[matsujirushi]

I am currently working on a fix.

Even after installing the driver, the screen does not appear in the following environments.

• Raspberry Pi OS 32-bit
  • 2023-05-03-raspios-bullseye-armhf.img.xz
    • arm_64bit=1 - default
  • 2023-10-10-raspios-bookworm-armhf.img.xz
    • arm_64bit=1 - default
    • arm_64bit=0
  • 2023-12-05-raspios-bookworm-armhf.img.xz
    • arm_64bit=1 - default
    • arm_64bit=0

[matsujirushi]

/scripts/reTerminal.sh flow is:

flowchart TD
    id1(Check /boot volume space)
    id2(Install dkms package)
    id3(Uninstall modules and overlays)
    id4(Upgrade kernel)
    id5(Install kernel header)
    id6(Install modules and overlays)
    id7(Modify few files)
    
    id1 --> id2
    id2 --> id3
    id3 --> id4
    id4 --> id5
    id5 --> id6
    id6 --> id7

• The code to get the kernel version when installing a module is complicated.
  • The kernel version cannot be obtained correctly with the following OS images.
    • 2023-10-10-raspios-bookworm-armhf.img.xz + arm_64bit=0
    • 2023-12-05-raspios-bookworm-armhf.img.xz + arm_64bit=0
• By default, upgrade the Kernel.
• Not rebooted after upgrading Kernel.
  • Unable to get kernel version with uname -r.
• --keep-kernel can prevent kernel upgrades, but it seems that it is not compatible with Ubuntu.

[matsujirushi]

Change Strategy:

• 1st phase
  • First, we will modify the operation for Raspberry Pi OS. Unchanged for Ubuntu.
  • For Raspberry Pi OS, --keep-kernel option recommended. (DON'T upgrade the kernel.)
  • Raspberry Pi OS 64-bit kernel + 32-bit userland is NOT supported. (Change to 32-bit kernel + 32-bit userland with arm_64bit=0)
• 2nd phase
  • Support --keep-kernel option for Ubuntu.
• 3rd phase
  • Enable --keep-kernel option by default

What do you think? @bigbearishappy

[matsujirushi]

1st phase

Commands

for Raspberry Pi OS

When using a 32-bit OS, add arm_64bit=0 to /boot/config.txt (or /boot/firmware/config.txt) and reboot.

git clone -b issue86/step1 --depth 1 https://github.com/matsujirushi/seeed-linux-dtoverlays
cd seeed-linux-dtoverlays
sudo ./scripts/reTerminal.sh --keep-kernel

Tests

• [x] Raspberry Pi OS 32-bit
  • [x] 2021-05-07-raspios-buster-armhf.zip : PASSED
  • [x] 2023-02-21-raspios-bullseye-armhf.img.xz : PASSED
  • [x] 2023-05-03-raspios-bullseye-armhf.img.xz
    • [x] arm_64bit=1 - default : FAILED Couldn't find *** corresponding *** kernel headers with apt-get.
    • [x] arm_64bit=0 : PASSED
  • [x] 2023-10-10-raspios-bookworm-armhf.img.xz
    • [x] arm_64bit=1 - default : FAILED Couldn't find *** corresponding *** kernel headers with apt-get.
    • [x] arm_64bit=0 : PASSED
  • [x] 2023-12-05-raspios-bookworm-armhf.img.xz
    • [x] arm_64bit=1 - default : FAILED Couldn't find *** corresponding *** kernel headers with apt-get.
    • [x] arm_64bit=0 : PASSED
• [x] Raspberry Pi OS 64-bit
  • [x] 2021-05-07-raspios-buster-arm64.zip : PASSED
  • [x] 2023-05-03-raspios-bullseye-arm64.img.xz : PASSED
  • [x] 2023-10-10-raspios-bookworm-arm64.img.xz : PASSED
  • [x] 2023-12-05-raspios-bookworm-arm64.img.xz : PASSED

[bigbearishappy]

Change Strategy:

• 1st phase

  • First, we will modify the operation for Raspberry Pi OS. Unchanged for Ubuntu.
  • For Raspberry Pi OS, --keep-kernel option recommended. (DON'T upgrade the kernel.)
  • Raspberry Pi OS 64-bit kernel + 32-bit userland is NOT supported. (Change to 32-bit kernel + 32-bit userland with arm_64bit=0)

• 2nd phase

  • Support --keep-kernel option for Ubuntu.

• 3rd phase

  • Enable --keep-kernel option by default

What do you think? @bigbearishappy

I don't think it's a good idea to enable the --keep-kernel by default. As the raspbian OS change a lot since bookworm. The install code should seprate with two parts: 1 For old raspbian OS version(like bulleyes, busster...) 2 For new raspbian OS version(like bookworm) At the start of the install script, we need to determine the system environment, and then deal with them with different code.

[matsujirushi]

Hi @bigbearishappy , Thank you for response.

enable the --keep-kernel by default

I don't think it's a good idea to enable the --keep-kernel by default.

Sorry. I don't understand why.

reTerminal.sh without --keep-kernel compiles and installs the device driver after upgrading the kernel. I think it is better to enable --keep-kernel by default for the following reasons.

• Kernel is upgraded unintentionally by the user.
• The method to obtain the kernel version is unstable. (The script is not rebooting after kernel upgrade.)

Difference between old and new Raspberry Pi OS

we need to determine the system environment, and then deal with them with different code.

I see. I'm not familiar with the Raspberry Pi OS. Could you please tell me the differences between the old and new OS that I need to deal with in the script?

[bigbearishappy]

Hi @bigbearishappy , Thank you for response.

enable the --keep-kernel by default

I don't think it's a good idea to enable the --keep-kernel by default.

Sorry. I don't understand why.

reTerminal.sh without --keep-kernel compiles and installs the device driver after upgrading the kernel. I think it is better to enable --keep-kernel by default for the following reasons.

• Kernel is upgraded unintentionally by the user.
• The method to obtain the kernel version is unstable. (The script is not rebooting after kernel upgrade.)

Difference between old and new Raspberry Pi OS

we need to determine the system environment, and then deal with them with different code.

I see. I'm not familiar with the Raspberry Pi OS. Could you please tell me the differences between the old and new OS that I need to deal with in the script?

According to this link. You can upgrade bullseye to bookworm. It seems like the apt source link is changed between them.

[matsujirushi]

FYI

• The reTerminal driver for Raspberry Pi OS
• The reTerminal driver for Ubuntu OS

[matsujirushi]

FYI I create new script. reTerminal2.sh https://github.com/matsujirushi/seeed-linux-dtoverlays/blob/main/scripts/reTerminal2.sh https://github.com/matsujirushi/seeed-linux-dtoverlays/blob/main/doc/reTerminal_RasPiOS.md

[bigbearishappy]

FYI I create new script. reTerminal2.sh https://github.com/matsujirushi/seeed-linux-dtoverlays/blob/main/scripts/reTerminal2.sh https://github.com/matsujirushi/seeed-linux-dtoverlays/blob/main/doc/reTerminal_RasPiOS.md

The script reTerminal2.sh looks good. Can you try to merge it into the reTerminal.sh.It would be better for user to use it.

[bigbearishappy]

I just upgraded the reTerminal.sh by refering your reTerminal2.sh. And it works fine with the following image:

ubuntu-22.04.3-preinstalled-server-arm64+raspi.img
2023-12-05-raspios-bookworm-armhf.img
2023-12-05-raspios-bookworm-arm64.img
2023-05-03-raspios-bullseye-arm64.img
2023-05-03-raspios-bullseye-armhf.img (bootup with arm_64bit=0)

Maybe you can continue you work base on the latest code.

[bigbearishappy]

@matsujirushi Is there anything new about this issue now?

[Lesords]

Hello,

I'm going to close this issue, feel free to re-open it if you have any other questions.

[Autocommentary]