Flickering on Raspberry Pi 3 B+

[baharanchi]

The sample application is not working properly on my Raspberry Pi 3 B+ on Sway. After hovering or clicking on the "+" button, the whole app flickers or sometimes goes black except for the button.

I recorded a video of this behavior using my phone. you can watch it here:

https://github.com/sony/flutter-elinux/assets/25637303/bb3bf364-01ef-4ee1-9c2d-7396de92c58c

[HidenoriMatsubayashi]

Please share Raspberry Pi OS and sway versions. First of all, this kind of H/W or SW specific issue will take a long time to be fixed or closed since it is not easy to reproduce the issue and it needs the target H/W.

[baharanchi]

Sway version is v1.5.

I used the official Raspbian image "2023-05-03-raspios-bullseye-arm64.img". Here are the contents of /ets/os-release:

NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

And here is the result of uname -a:

pi@raspberrypi:~ $ uname -a
Linux raspberrypi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr  3 17:24:16 BST 2023 aarch64 GNU/Linux

[HidenoriMatsubayashi]

By the way, Raspberry Pi 3 B+ has only 1GB memory, right? I guess it's not enough for flutter-elinux. How did you build the artifacts on Raspberry Pi 3? Can you try Raspberry Pi 4 instead?

[baharanchi]

That's right. I increased the swap size to 1GB, stopped memory heavy services like lightdm, ran the command from a tty and just waited for it to finish :D

On Wed, Sep 20, 2023, 4:24 PM Hidenori Matsubayashi < @.***> wrote:

By the way, Raspberry Pi 3 has only 1GB memory, right? I guess it's not enough for flutter-elinux. How did you build the artifacts on Raspberry Pi 3?

— Reply to this email directly, view it on GitHub https://github.com/sony/flutter-elinux/issues/222#issuecomment-1727670844, or unsubscribe https://github.com/notifications/unsubscribe-auth/AGDTDNZ5G6XWCNX2GWEXXRLX3LRRLANCNFSM6AAAAAA46RIED4 . You are receiving this because you authored the thread.Message ID: @.***>

[baharanchi]

Curently I don't have access to a Raspberry Pi 4. I need it to work on 3 B+ if possible.

On Wed, Sep 20, 2023, 4:24 PM Hidenori Matsubayashi < @.***> wrote:

By the way, Raspberry Pi 3 has only 1GB memory, right? I guess it's not enough for flutter-elinux. How did you build the artifacts on Raspberry Pi 3?

— Reply to this email directly, view it on GitHub https://github.com/sony/flutter-elinux/issues/222#issuecomment-1727670844, or unsubscribe https://github.com/notifications/unsubscribe-auth/AGDTDNZ5G6XWCNX2GWEXXRLX3LRRLANCNFSM6AAAAAA46RIED4 . You are receiving this because you authored the thread.Message ID: @.***>

[HidenoriMatsubayashi]

For now, I've tested it on Raspberry Pi4 (completely same versions), but the issue didn't be reproduced.

[HidenoriMatsubayashi]

I was also able to reproduce a similar rendering issue on Raspberry Pi 3 B+. It seems to depend on H/W.

[HidenoriMatsubayashi]

This issue is the same as https://github.com/sony/flutter-embedded-linux/issues/334. I'll disable dirty region management temporarily as a workaround. I'll close this issue.

Thanks.

[HidenoriMatsubayashi]

Re-opened as this issue might not be related to https://github.com/sony/flutter-embedded-linux/issues/334. I can still rendering issue even using https://github.com/sony/flutter-embedded-linux/pull/385.

[HidenoriMatsubayashi]

Waiting for flutter/engine's bug fix. See https://github.com/sony/flutter-embedded-linux/issues/334#issuecomment-1730838409

[HidenoriMatsubayashi]

v3.13.9 should fix this issue as it includes https://github.com/sony/flutter-embedded-linux/pull/388 for now. Closing. Thanks.