[CentOS-devel] Subject=Re: secure boot comments

Keivan Motavalli motavalli.keivan at gmail.com
Thu Jun 26 18:26:25 UTC 2014


I downloaded and burned livecd-centos-7-live-gnome-201406261459.iso
(checking its hashsum).

It does boot flawlessly on a lenovo thinkpad T430-2349H3G using uefi
only and secureboot enabled.

modsign-uefi throws "Couldn't parse DBX signatures: -74", but the boot
process continues.

The live image, however, is not usable, neither textually nor graphically.

The laptop comes with an integrated 3G modem, "Ericsson HSPA+ WWAN
Minicard (H5321gw)". modem-manager.service fails to start, and
subsequently also "systemd-logind.service" repetitively fails to
starts, leaving the system in an unusable state, without any working
tty and/or display manager.

IMHO, systemd-logind tries to start getty on one of the 3g modem
serial interfaces, probably not recognizing it as one, thus failing.

disabling the integrated modem and wlan adapter via a physical switch
is a workaround to the issue. This seems to be a fedora 19-20 bug gone
unfixed into RHEL7.



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