Indeed - I'd rather not remove overlays without being certain we don't need them. For now though, let's just get the splash screen working again (as it's a little un-nerving for new users to be presented with a straight black screen during boot and have no indication anything's working other than a blinking LED).
In this case I'm certain all the kernel modules required are being built (because as mentioned psplash works *after* boot), but there's only a single kernel module (which looks related to i2c) present in the current initrd.img (which is part of the kernel snap). So I think the only thing required here is to ensure that the kernel modules which were present in the stable/current version (snap rev 21) are also present in the current version (snap rev 42). Specifically, the kernel modules included in the initrd in snap rev 21 are as follows: lib/modules/4.15.0-1031-raspi2/kernel/drivers/video/fbdev/core/sysfillrect.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/video/fbdev/core/syscopyarea.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/video/fbdev/core/sysimgblt.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/video/fbdev/core/fb_sys_fops.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/ipu-v3/imx-ipu-v3.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/arm/mali-dp.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/arm/hdlcd.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/vgem/vgem.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/drm_kms_helper.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/vc4/vc4.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/i2c/sil164.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/i2c/tda998x.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/i2c/ch7006.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tve200/tve200_drm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tinydrm/repaper.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tinydrm/mipi-dbi.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tinydrm/st7586.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tinydrm/mi0283qt.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tinydrm/core/tinydrm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/mxsfb/mxsfb.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/nxp-ptn3460.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/adv7511/adv7511_drm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/lvds-encoder.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/ti-tfp410.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/dumb-vga-dac.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/tc358767.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/sii902x.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/sil-sii8620.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/parade-ps8622.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/sii9234.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/bridge/analogix-anx78xx.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/virtio/virtio-gpu.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/pl111/pl111_drm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/tilcdc/tilcdc.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/drm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-simple.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-innolux-p079zca.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-jdi-lt070me05000.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-seiko-43wvf1g.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-samsung-ld9040.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-samsung-s6e3ha2.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-sitronix-st7789v.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-lg-lg4573.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-lvds.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-orisetech-otm8009a.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/arc/arcpgu.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/ttm/ttm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/exynos/exynosdrm.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/gpu/drm/udl/udl.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/media/cec/cec.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/media/rc/rc-core.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/i2c/busses/i2c-bcm2708.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/virtio/virtio.ko lib/modules/4.15.0-1031-raspi2/kernel/drivers/virtio/virtio_ring.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/soc/snd-soc-core.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/ac97_bus.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/core/snd-compress.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/core/snd-timer.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/core/snd.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/core/snd-pcm.ko lib/modules/4.15.0-1031-raspi2/kernel/sound/core/snd-pcm-dmaengine.ko Whereas the only one present in snap rev 42 is: lib/modules/4.15.0-1041-raspi2/kernel/drivers/i2c/busses/i2c-bcm2708.ko I'm reasonably sure some of the kernel modules in 21 aren't actually required in the initrd (for instance, I doubt we need the kernel/sound stuff during early boot), but it might be simplest to just revert whatever change removed all those modules. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1837209 Title: Splash screen fails to display on recent pi core18 images Status in Snappy: New Status in linux-raspi2 package in Ubuntu: New Bug description: The current core18 image [1] for the raspberry pi fails to display the "Core" splash screen on boot. This is because psplash fails to open the /dev/fb0 framebuffer device, because it doesn't exist. This appears to be due to a lack of supporting kernel modules in the initrd.img (fb_sys_fops, drm, vc4, etc.) which were formerly present but are missing from the version I'm testing (pi-kernel 4.15.0-1041.44, snap rev 42). Steps to reproduce: * Flash the image to a uSD card and boot the pi with it (preferably with a serial console attached). * Note screen remains black instead of displaying the familiar "Core" text under an Ubuntu logo. * If serial console is attached, note "Error opening /dev/fb0" in the output shortly after u-boot starts the kernel; this is output from psplash failing [1] http://cdimage.ubuntu.com/ubuntu-core/18/current/ubuntu- core-18-armhf+raspi3.img.xz To manage notifications about this bug go to: https://bugs.launchpad.net/snappy/+bug/1837209/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
