We have number of reTerminal, and on one the front-buttons do not work. The issue persists across various OS and all devices are configured identically.
Expected:
/dev/input/event0: seeed-tp
/dev/input/event1: gpio_keys
/dev/input/event2: vc4
/dev/input/event3: vc4
Actual:
/dev/input/event0: seeed-tp
/dev/input/event1: vc4
/dev/input/event2: vc4
Any suggestions how I can troubleshoot the missing gpio_keys?
I have a dependency on the front hardware buttons, so I’ve stuck with the previous 2021-09-13-Raspbian-reTerminal.img OS image. They work in this image.
However, reTerminal Raspbian images beyond this do not have have the GPIO keys enabled for whatever reason. I haven’t had the time to do this, but you could decompile the dt overlay blobs from the working and non-working OS images and do a diff as a starting point for troubleshooting.
Until Seeed fixes the issue in the latest OS release, I’m going to stick to the 2021-09-13-Raspbian-reTerminal.img image as it works in that release.
Observation with 2021-09-13-Raspbian-reTerminal.img
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 5.10.60-v7l+ #1449 SMP Wed Aug 25 15:00:44 BST 2021 armv7l GNU/Linux
pi@raspberrypi:~ $ tree /dev/input/
/dev/input/
├── by-path
│ ├── platform-fe804000.i2c-event -> ../event0
│ ├── platform-fef00700.hdmi-event -> ../event3
│ ├── platform-fef05700.hdmi-event -> ../event4
│ ├── platform-gpio_keys-event -> ../event1
│ └── platform-lis3lv02d-event -> ../event2
├── event0
├── event1
├── event2
├── event3
├── event4
├── js0
├── mice
└── mouse0
Observation with a recent release
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 5.15.32-v7l+ #1538 SMP Thu Mar 31 19:39:41 BST 2022 armv7l GNU/Linux
pi@raspberrypi:~ $ tree /dev/input
/dev/input
├── by-path
│ ├── platform-fe804000.i2c-event -> ../event1
│ ├── platform-fef00700.hdmi-event -> ../event2
│ ├── platform-fef05700.hdmi-event -> ../event3
│ └── platform-lis3lv02d-event -> ../event0
├── event0
├── event1
├── event2
├── event3
├── js0
├── mice
└── mouse0
1 directory, 11 files
Thanks for pointing this out; I wasn’t aware.
However, as mentioned in my first message, all our reTerminal work just fine (gpio_keys recognized) across various OS (Raspbian, PantherX). It’s just this one reTerminal that does not work, no matter which OS or configuration I try.
Almost like a hardware fault, but I don’t think so.
It’s definitely not a hardware fault, it’s some kind of configuration issue - the same unit that has working gpio-keys, will fail to work when using a more recent Raspbian reTerminal image.