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Ubuntu 16.04: has been working fine for a year and a half, now suddenly
freezing on bootup, with a permanent spinning logo. The problem appears
with the new (4.4.0-93) kernel. (Things were fine in 4.4.0-93.) My
system has /boot on a USB and root on LUKS (along with a 2nd data disk
on LUKS).
I can boot via a text console if I remove the "splash" kernel switch and
changed $vt.handoff to "$vt.handoff=7". Unfortunately, adding the
"debug" switch causes a freeze, though "debug=vc" boots. Also, for any
of the settings that cause a freeze, if I add "break=mountroot", I can
mount the LUKS disks by hand and continue with boot.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Kernel 4.4.0-93 - Suddenly freezing on boot.
https://bugs.launchpad.net/bugs/1718047
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