Hi Peter,
Am 09.06.22 um 13:52 schrieb Peter Robinson:
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.
okay thanks. I tried the kernel config but its huge.
Is it correct that the issue occurs with your kernel config, but not
with multi_v7_defconfig?
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
This is good. I had issues with older firmware which didn't implement
RPI_FIRMWARE_NOTIFY_DISPLAY_DONE. So it must be something different.
