Public bug reported:
Baytrail (server) machines can't be booted up without a monitor
connected, because hotplug doesn't work without X. This has been fixed
upstream in v4.8-rc1, four commits need to be backported:
4570d833390b100 drm/i915/vlv: Make intel_crt_reset() per-encoder
4c732e6ee9e7190 drm/i915/vlv: Reset the ADPA in vlv_display_power_well_init()
21842ea84f161ae drm/i915/vlv: Disable HPD in valleyview_crt_detect_hotplug()
84c8e0963da434d drm/i915: Enable polling when we don't have hpd
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Triaged
** Affects: linux (Ubuntu Xenial)
Importance: Undecided
Assignee: Timo Aaltonen (tjaalton)
Status: In Progress
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Timo Aaltonen (tjaalton)
** Changed in: linux (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1616894
Title:
[BYT] display hotplug doesn't work on console
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Xenial:
In Progress
Bug description:
Baytrail (server) machines can't be booted up without a monitor
connected, because hotplug doesn't work without X. This has been fixed
upstream in v4.8-rc1, four commits need to be backported:
4570d833390b100 drm/i915/vlv: Make intel_crt_reset() per-encoder
4c732e6ee9e7190 drm/i915/vlv: Reset the ADPA in vlv_display_power_well_init()
21842ea84f161ae drm/i915/vlv: Disable HPD in valleyview_crt_detect_hotplug()
84c8e0963da434d drm/i915: Enable polling when we don't have hpd
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