revert this:
commit 06e562e7f515292ea7721475950f23554214adde
Author: Chris Wilson <ch...@chris-wilson.co.uk>
Date: Mon Nov 5 09:43:05 2018 +0000
drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5
commit fb5bbae9b1333d44023713946fdd28db0cd85751 upstream.
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1814555
Title:
Ubuntu boot failure. 4.18.0-14 boot stalls. (does not boot)
Status in linux package in Ubuntu:
Incomplete
Bug description:
Today my Ubuntu (18.10) did an auto-upgrade to 4.18.0-14-generic,
requested a reboot, and was unable to boot. After the "Starting
Load/Save RF Kill Switch Status..." line it is waiting forever.
(Or/and doing something behind the scenes. After a while, even the HDD
indicator led go out.)
This is a permanent error, so kernel 4.18.0-14 does NOT boot.
I was able to boot with kernel 4.18.0-13. (By pressing Shift when grub
starts.)
My configuration is "nothing fancy", possibly-except the locale (ISO-8859-2,
hu and en), Xcfe4, gdm3, gnome-screensaver.
I have already upgraded to the latest packages. (sudo apt-get dist-upgrade)
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