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[Bug 1573120] Re: VGA monitor goes to sleep randomly in 16.04

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Marco Aicardi <1573120@xxxxxxxxxxxxxxxxxx>
Date: Thu, 21 Apr 2016 16:09:29 -0000
Reply-to: Bug 1573120 <1573120@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I noticed (it may be useful or not) that the VGA monitor goes to sleep
mode almost only when I press a key with the focus on a window on the
VGA monitor; otherwise it happens the monitor to stay awake for hours.

** Also affects: i915 (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

  Without any clear correlation to events, the VGA output of my NUC5i3RYH
  goes to sleep, while the other output (HDMI) has no problem.
  
  The running system is Ubuntu MATE 16.04 amd64 with kernel
  4.4.0-21.37-generic 4.4.6
  
  The NUC5i3RYH has an onboard HD Intel 5500.
  
  It does NOT happen in 14.04 nor in 15.10.
  
  The monitor can be waken up again with xrandr with this script:
  
- ### Switch off DP1 = VGA
- xrandr --output HDMI1 --mode 1280x1024 --output DP1 --off
+      ### Switch off DP1 = VGA
+      xrandr --output HDMI1 --mode 1280x1024 --output DP1 --off
  
- sleep 1
+      sleep 1
  
- ### Turns it on again
- xrandr --output HDMI1 --mode 1280x1024 --output DP1 --mode 1280x1024 --auto --right-of HDMI1 --primary
+      ### Turns it on again
+      xrandr --output HDMI1 --mode 1280x1024 --output DP1 --mode 1280x1024 --auto --right-of HDMI1 --primary
  
  The only info I found is in kern.log:
  
- [80299.466886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
- CPU pipe A FIFO underrun
+      [80299.466886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
+ *ERROR* CPU pipe A FIFO underrun
  
  No info in Xorg.log
  
  Will someone please help?
  
  Thanks.
  
  Marco
  
- 
  The relevant part of lspci about the GPU is:
  
  00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
- 	Subsystem: Intel Corporation Broadwell-U Integrated Graphics [8086:2057]
- 	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
- 	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
- 	Latency: 0
- 	Interrupt: pin A routed to IRQ 45
- 	Region 0: Memory at a9000000 (64-bit, non-prefetchable) [size=16M]
- 	Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
- 	Region 4: I/O ports at 2000 [size=64]
- 	Expansion ROM at <unassigned> [disabled]
- 	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
- 		Address: fee00018  Data: 0000
- 	Capabilities: [d0] Power Management version 2
- 		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
- 		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
- 	Capabilities: [a4] PCI Advanced Features
- 		AFCap: TP+ FLR+
- 		AFCtrl: FLR-
- 		AFStatus: TP-
- 	Kernel driver in use: i915
- 	Kernel modules: i915
+  Subsystem: Intel Corporation Broadwell-U Integrated Graphics [8086:2057]
+  Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
+  Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
+  Latency: 0
+  Interrupt: pin A routed to IRQ 45
+  Region 0: Memory at a9000000 (64-bit, non-prefetchable) [size=16M]
+  Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
+  Region 4: I/O ports at 2000 [size=64]
+  Expansion ROM at <unassigned> [disabled]
+  Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
+   Address: fee00018  Data: 0000
+  Capabilities: [d0] Power Management version 2
+   Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
+   Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
+  Capabilities: [a4] PCI Advanced Features
+   AFCap: TP+ FLR+
+   AFCtrl: FLR-
+   AFStatus: TP-
+  Kernel driver in use: i915
+  Kernel modules: i915
  
  I've tried to report the bug in the i915 package but the launchpad
  reports <<"i915" does not exist in Ubuntu. Please choose a different
  package. If you're unsure, please select "I don't know">>.

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https://bugs.launchpad.net/bugs/1573120

Title:
  VGA monitor goes to sleep randomly in 16.04

Status in i915 package in Ubuntu:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  Without any clear correlation to events, the VGA output of my
  NUC5i3RYH goes to sleep, while the other output (HDMI) has no problem.

  The running system is Ubuntu MATE 16.04 amd64 with kernel
  4.4.0-21.37-generic 4.4.6

  The NUC5i3RYH has an onboard HD Intel 5500.

  It does NOT happen in 14.04 nor in 15.10.

  The monitor can be waken up again with xrandr with this script:

       ### Switch off DP1 = VGA
       xrandr --output HDMI1 --mode 1280x1024 --output DP1 --off

       sleep 1

       ### Turns it on again
       xrandr --output HDMI1 --mode 1280x1024 --output DP1 --mode 1280x1024 --auto --right-of HDMI1 --primary

  The only info I found is in kern.log:

       [80299.466886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
  *ERROR* CPU pipe A FIFO underrun

  No info in Xorg.log

  Will someone please help?

  Thanks.

  Marco

  The relevant part of lspci about the GPU is:

  00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Intel Corporation Broadwell-U Integrated Graphics [8086:2057]
   Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
   Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
   Latency: 0
   Interrupt: pin A routed to IRQ 45
   Region 0: Memory at a9000000 (64-bit, non-prefetchable) [size=16M]
   Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
   Region 4: I/O ports at 2000 [size=64]
   Expansion ROM at <unassigned> [disabled]
   Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Address: fee00018  Data: 0000
   Capabilities: [d0] Power Management version 2
    Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
    Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
   Capabilities: [a4] PCI Advanced Features
    AFCap: TP+ FLR+
    AFCtrl: FLR-
    AFStatus: TP-
   Kernel driver in use: i915
   Kernel modules: i915

  I've tried to report the bug in the i915 package but the launchpad
  reports <<"i915" does not exist in Ubuntu. Please choose a different
  package. If you're unsure, please select "I don't know">>.

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References

[Bug 1573120] [NEW] VGA monitor goes to sleep randomly in 16.04
From: Marco Aicardi, 2016-04-21