I'm also experiencing the same problem on a Gigabyte Brix J1900 unit (similar to Intel Nuc). When I plug in a monitor before turning the unit on, console shows a login on the display. If I plug a monitor after boot, it shows no input signal.
Same kernel/ubuntu version.
Here is output from lspci -v:
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Gigabyte Technology Co., Ltd Atom Processor Z36xxx/Z37xxx Series Graphics & Display
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at d0000000 (32-bit, non-prefetchable) [size=4M]
Memory at c0000000 (32-bit, prefetchable) [size=256M]
I/O ports at f080 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [d0] Power Management version 2
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [b0] Vendor Specific Information: Len=07 <?>
Kernel modules: i915
I'm also experiencing the same problem on a Gigabyte Brix J1900 unit (similar to Intel Nuc). When I plug in a monitor before turning the unit on, console shows a login on the display. If I plug a monitor after boot, it shows no input signal.
Same kernel/ubuntu version.
Here is output from lspci -v:
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Gigabyte Technology Co., Ltd Atom Processor Z36xxx/Z37xxx Series Graphics & Display
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at d0000000 (32-bit, non-prefetchable) [size=4M]
Memory at c0000000 (32-bit, prefetchable) [size=256M]
I/O ports at f080 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [d0] Power Management version 2
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [b0] Vendor Specific Information: Len=07 <?>
Kernel modules: i915