Kernel 4.14-rc1 has been stable on the x86_64 test system, but when I tried updating the Odroid C2 (ARM64) I saw a lot of mmc and other errors reported..

..........
[ OK ] Started File System Check on Root Device.
 Starting Remount Root and Kernel File Systems...
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
mmcblk0: response CRC error sending r/w cmd command, card status 0xd00
print_req_error: I/O error, dev mmcblk0, sector 2048
Buffer I/O error on dev mmcblk0p1, logical block 0, lost sync page write
EXT4-fs (mmcblk0p1): re-mounted. Opts: (null)
...................
[ OK ] Started udev Coldplug all Devices.
[FAILED] Failed to start Load/Save Random Seed.
See 'systemctl status systemd-random-seed.service' for details.
...............
phy phy-c0000000.phy.0: USB ID detect failed!
phy phy-c0000000.phy.0: phy poweron failed --> -22
dwc2: probe of c9000000.usb failed with error -22
..............

Once the system was up, I found that the old Ethernet link problem seemed to have reappeared, and although eth0 seemed to be up, network traffic would cease after a short time..       The system had also switched to a ‘read-only filesystem’…..

So.. I reverted to 4.13.2, and everything was OK, again..     I did not even get a chance to test if hdmi etc. worked at all, this time..

Robert Gadsdon.   September 18, 2017.