Created attachment 814369 [details]
y2logs .tgz from fresh installation of 15.2a build 481 on Asus Kaby Lake on
which "Boot Linux System" last attempted

Initial Summary:
UEFI "Boot Linux System" from installation media screen 2 consistently fails
quickly

To reproduce:
1-boot installation media in UEFI mode
2-choose "More ..."
3-choose "Boot Linux System"
4-(optional) append/edit linuxefi line, e.g. add video=1440x900 and/or 3 and/or
noresume or remove splash=silent
5-answer the questions asked/make appropriate selections about kernel, options
and root filesystem

Actual results:
1-instant message in yellow text on red background: "Sorry, system didn't boot"
2-on vtty4: kexec_file: kernel signature verification failed (-129).
3-sh: dmesg: command not found on tty9
4-tty[2,5,6] shell absent
5-sh: systemctl: command not found on tty9

Expected results:
1-installed system boots, or
2-something more than instant failure report

Note: forum thread comments report failure also happens with a VM, and with
15.1, and with either OM or USB boot media.

Other info from installation on which last attempt made (using NET OM):
# efibootmgr
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0007,0006,0003
Boot0000* opensuse
Boot0003* CD/DVD Drive
Boot0006* Hard Drive
Boot0007* UEFI: Optiarc DVD RW AD-7200S

# parted -l highlights
Disk /dev/sda: 40.0GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number  Start   End     Size    File system     Name                   Flags
 1      1049kB  337MB   336MB   fat16           P01 EFI System  (ESP)  boot,
esp
 2      337MB   1202MB  865MB   linux-swap(v1)  P02 swapper            swap
 3      1202MB  9590MB  8389MB  ext4            P03 linuxroot1
 4      9590MB  40.0GB  30.4GB  ext4            P04 linuxhome