Second display inconsistency thru HDMI

[erfan]

I have another hardware difficulty (after the sound, which was solved) with the LENOVO IdeaPad Slim 5 15ARP10, AMD Ryzen 7 7735HS laptop. It is used in classes for presentations too, but with different connected display devices, and different connection types, but all starting from the laptop's HDMI connector. The laptop runs Rosa Fresh 13, Plasma 6 - X11, updated.

Possible scenarios are:

• laptop HDMI > HDMI to VGA converter > VGA cable to a projector (multiple type of projectors)

• laptop HDMI > HDMI cable to a projector (multiple type of projectors)

• laptop HDMI > HDMI cable to a monitor/tv (multiple type of devices)

In each scenarios there are devices which works and others that doesn't.

The most frequent error is, that the connection is recognized, in Plasma display settings a new device with a number shows up, but the display device receives no signal. This happens if the laptop is ON and the device is connected after. If the laptop is rebooted, everything works. The change between the two statuses is, that when the laptop is rebooted, the new display device is shown in display manager with it's name and model and not a random number, like first time. Looking into the ~/.local/share/kscreen folders files, the id of the two differs too, and sometimes the position also.
With the other isolated errors I will return, if this main one get solved and it does not solve the isolated ones too.

When NO SIGNAL is received:

Код: Выделить всё

    {
        "enabled": true,
        "id": "53057bb979bd35085887a37a1524ee80",
        "metadata": {
            "fullname": "xrandr-16843009",
            "name": "HDMI-A-0"
        },
        "mode": {
            "refresh": 60,
            "size": {
                "height": 1080,
                "width": 1920
            }
        },
        "overscan": 0,
        "pos": {
            "x": 0,
            "y": 0
        },
        "priority": 2,
        "rgbrange": 0,
        "rotation": 1,
        "scale": 1,
        "vrrpolicy": 2
    }

After reboot, when there IS SIGNAL:

Код: Выделить всё

    {
        "enabled": true,
        "id": "6b8d88ec1d084576893fb024caf7298d",
        "metadata": {
            "fullname": "xrandr-BenQ PJ-1770",
            "name": "HDMI-A-0"
        },
        "mode": {
            "refresh": 60,
            "size": {
                "height": 1080,
                "width": 1920
            }
        },
        "overscan": 0,
        "pos": {
            "x": 1920,
            "y": 0
        },
        "priority": 2,
        "rgbrange": 0,
        "rotation": 1,
        "scale": 1,
        "vrrpolicy": 2
    }

This happened with 6.12.47 kernel and 6.16.8 kernel too. Just a remark, that the laptops built-in display is recognized by the 6.12 kernels as AU Optronics and by the higher than 6.15.11 kernels (the lower version I have tried on Rosa) as Lenovo Group Limited

I never met such a situation in the last 10 years, that a laptop with linux has such problems - 2 intel laptops and 3 linux OS used, performing the same tasks - before this AMD Lenovo with Rosa.

And is not always a solution to reboot the laptop during a class, because sometimes there are already prepared, chosen materials, which in case of a reboot has to be re-searched, arranged, which takes time.

Thank You for any suggestion!

Sorry, if I would not reply fast, because I do not really have the possibility to make tests on all these devices. I never counted them, but might be around at least 15 different ones (some works, some not). Unfortunately (or not ...) a monitor and a projector to which I have access to check settings, are working without any problem.