Re: drm/vc4: module dysfunctional on Raspberry Pi 3B as of 5.18.0

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> >>> As of Linux 5.18.0, module vc4 apparently isn't working on Raspberry Pi
> >>> 3B any more.
> >>>
> >>> If a monitor is attached to the device, the boot messages show up as
> >>> usual, but right when KMS starts, the screen turns black. Similarly, the
> >>> screen also turns black when the module is blacklisted at boot time and
> >>> loaded from the running system.
> >>> The problem looks quite similar to the one posted some months ago in [1].
> > If I understand you properly, it results in a blank screen if the
> > monitor is connected, but the system is still responsive?
> >
> > If so, it's a very different problem than the link you provided, since
> > it was occurring when no monitor was connected and resulted in a total
> > system hang.
> >
> >>> Unfortunately, looking through systemd's journal didn't seem to yield
> >>> any real hint. Nevertheless, the results from grepping vc4 are
> >> I'm seeing the same issue with vc4 on a RPi3 on 5.18.1 on Fedora so
> >> can confirm the regression. Maxime would know what might be up here?
>
> i assume you are using the downstream DTB?

In this case it's the one in the Linux kernel (not sure if that's
upstream or downstream in this context) not the one provided by the
RPi firmware.

> Please provide the version/date of the GPU firmware?

[    6.205121] raspberrypi-firmware soc:firmware: Attached to firmware
from 2022-05-24T13:26:52
Which is git f145afc



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