*** This bug is a duplicate of bug 1813663 ***
https://bugs.launchpad.net/bugs/1813663
** This bug is no longer a duplicate of bug 1813745
ubuntu 18-04 hangs on graphical start with kernel 4-15-0-44
** This bug has been marked a duplicate of bug 1813663
External monitors does not work
*** This bug is a duplicate of bug 1813663 ***
https://bugs.launchpad.net/bugs/1813663
Marking this as a duplicate of bug #1813745 since that already has a
test kernel build available which you should try, and if it solves the
issue, confirm on that bug.
** This bug has been marked a
The 4.15.0-44 kernel in in the bionic-proposed pocket. Looks like we
need to pull it due to this regression until this is resolved.
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https://bugs.launchpad.net/bugs/1813765
Title:
>From an initial reading of the commit history I suspect the issue may be
caused by e417085e79136d9f955 "drm/i915/dp: Send DPCD ON for MST before
phy_up" which deals with power transitions during monitor
connect/disconnect.
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Initial summary of the changes affecting i915 specifically:
gitlog Ubuntu-4.15.0-43.46..Ubuntu-4.15.0-44.47 -- drivers/gpu/drm/i915
d2da7cbf2ae0 2019-01-14 09:28:55 + N Ville Syrjälä drm/i915: Fix PIPESTAT
irq ack on i965/g4x
e417085e7913 2019-01-14 09:28:55 + N Lyude Paul drm/i915/dp:
