Hello,
I did some testing with the Nightly Build Image for the Odroid HC1 / XU4, and made 2 observations:
First a nice one: Seems the idle power consumption with the Nightly Build is even lower than with the current Stable Version (measured with an "ELV Energy Master", and very same Hardware for HC1 / SD Card / HDD in standby):
4.0 - 4.1 Watts with 5.43.180423 nightly, Debian stretch, kernel 4.14.35-odroidxu4
4.3 Watts with 5.41 stable, Debian jessie, 4.9.86-odroidxu4
During the boot process however there seems to be some 12 seconds delay on the Odroid HC1, which does not occur on a XU4. Seems the Kernel is running into some timeout? (Perhaps because the HC1 is headless and has no HDMI?)
Here the "dmesg" output on the HC1 (with ARMBIAN 5.43.180423 nightly):
[ 2.269968] exynos-gsc 13e00000.video-scaler: Linked as a consumer to 13e80000.sysmmu
[ 2.270023] iommu: Adding device 13e00000.video-scaler to group 6
[ 2.271205] exynos-gsc 13e10000.video-scaler: Linked as a consumer to 13e90000.sysmmu
[ 2.271263] iommu: Adding device 13e10000.video-scaler to group 7
[ 14.599003] device-mapper: uevent: version 1.0.3
[ 14.599314] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
And here the same on the XU4 (used exactly same SD Card):
[ 2.265929] exynos-gsc 13e00000.video-scaler: Linked as a consumer to 13e80000.sysmmu
[ 2.265984] iommu: Adding device 13e00000.video-scaler to group 6
[ 2.267160] exynos-gsc 13e10000.video-scaler: Linked as a consumer to 13e90000.sysmmu
[ 2.267219] iommu: Adding device 13e10000.video-scaler to group 7
[ 2.291153] device-mapper: uevent: version 1.0.3
[ 2.291472] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
Up to this point, the messages in "dmesg" match line-by-line on HC1 and XU4 (of course, the timestamps vary slightly).
The Odroid HC1 with the current stable build image (5.41, kernel 4.9.86) doesn't not show such a delay in the boot process.
Not a big deal, but I thought to report it here ...