Full PCI device info (with lspci -v)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen
Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Xeon E3-1200
v2/3rd Gen Core processor Graphics Controller
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel modules: i915
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1616894
Title:
[BYT] display hotplug doesn't work on console
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
Baytrail (server) machines can't be booted up without a display
connected, because hotplug doesn't work (X kinda works around it).
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
Test case:
1.
- boot without a display attached
- switch to vt1
- attach the display
- hit a key, the display should wake up
2.
- boot with a display
- switch to vt1
- detach & attach the display
- hit a key, the display should wake up
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