Hi Peter, Adding Stefan and Maxime > 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]. > > 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? > → 5.17.1 > > kernel: vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_hvs_ops [vc4]) > > kernel: rc rc0: vc4 as /devices/platform/soc/3f902000.hdmi/rc/rc0 > > kernel: input: vc4 as /devices/platform/soc/3f902000.hdmi/rc/rc0/input0 > > kernel: vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f806000.vec (ops vc4_vec_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f004000.txp (ops vc4_txp_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f206000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f207000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f807000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3fc00000.v3d (ops vc4_v3d_ops [vc4]) > > kernel: fb0: switching to vc4 from simple > > kernel: [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 0 > > kernel: vc4-drm soc:gpu: [drm] fb0: vc4drmfb frame buffer device > > systemd-logind[338]: Watching system buttons on /dev/input/event0 (vc4) > → 5.18.0 > > kernel: fb0: switching to vc4 from simple > > kernel: vc4-drm soc:gpu: bound 3f400000.hvs (ops vc4_hvs_ops [vc4]) > > kernel: rc rc0: vc4 as /devices/platform/soc/3f902000.hdmi/rc/rc0 > > kernel: input: vc4 as /devices/platform/soc/3f902000.hdmi/rc/rc0/input0 > > kernel: vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f806000.vec (ops vc4_vec_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f004000.txp (ops vc4_txp_ops [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f206000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f207000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3f807000.pixelvalve (ops vc4_crtc_ops > [vc4]) > > kernel: vc4-drm soc:gpu: bound 3fc00000.v3d (ops vc4_v3d_ops [vc4]) > > kernel: [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 0 > > kernel: vc4-drm soc:gpu: [drm] fb0: vc4drmfb frame buffer device > > systemd-logind[337]: Watching system buttons on /dev/input/event0 (vc4) > > Regards, > > Peter Mattern > > [1] > https://lists.freedesktop.org/archives/dri-devel/2022-January/339458.html >
