Bug 834832

Description of problem:

After screen saver kicks in and turns off laptop LCD, external monitor attached via DisplayPort constantly turns off and on. Would like external monitor to remain off just like main LCD built in to laptop.


Version-Release number of selected component (if applicable):

Kernel: 3.4.3-1.fc17.x86_64
xorg-x11-drv-nouveau-0.0.16-35.20120306gitf5d1cd2.fc17.x86_64

How reproducible: Always


Steps to Reproduce:
1. Power on laptop and log in
2. Attach external LCD monitor (Dell U2410) via DisplayPort on back of laptop to DisplayPort on back of monitor.
3. Set up mirrored display mode
4. Run xscreensaver-command -lock (or wait for idle timeout for screen to auto-lock and go into power saving mode

Actual results:

1. LCD Panel on laptop screen turns off
2. External monitor indicates it's going into power saving mode and successfully does so. Within 1-2 seconds, it comes on again with a blank screen, then says it's going into power savings mode. This repeats itself indefinitely.


Expected results:

Both laptop LCD panel and external monitor should turn off and remain so until I hit a key or move the mouse.

Additional info:

Dell E6500 laptop with F17 + GNOME shell. Disabled gnome-screen-saver and installed xscreensaver to attempt resolution of a different issue, but symptoms are the same.

lspci shows:
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# lspci -vv -s 01:00.0
01:00.0 VGA compatible controller: nVidia Corporation G98M [Quadro NVS 160M] (rev a1) (prog-if 00 [VGA controller])
	Subsystem: Dell Device 024f
	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, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
	Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Region 3: Memory at f2000000 (64-bit, non-prefetchable) [size=32M]
	Region 5: I/O ports at df00 [size=128]
	[virtual] Expansion ROM at f4000000 [disabled] [size=128K]
	Capabilities: [60] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [78] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <1us
			ClockPM- Surprise- LLActRep- BwNot-
		LnkCtl:	ASPM L0s L1 Enabled; RCB 128 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Not Supported, TimeoutDis+
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v1] Virtual Channel
		Caps:	LPEVC=0 RefClk=100ns PATEntryBits=1
		Arb:	Fixed- WRR32- WRR64- WRR128-
		Ctrl:	ArbSelect=Fixed
		Status:	InProgress-
		VC0:	Caps:	PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
			Arb:	Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
			Ctrl:	Enable+ ID=0 ArbSelect=Fixed TC/VC=01
			Status:	NegoPending- InProgress-
	Capabilities: [128 v1] Power Budgeting <?>
	Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
	Kernel driver in use: nouveau

#
---------------------------------------------------------

xrandr:
---------------------------------------------------------
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
LVDS-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
   1920x1200      60.0*+   59.9     40.0  
   1920x1080      60.0  
   1600x1200      59.9  
   1680x1050      60.0  
   1400x1050      60.0  
   1280x1024      59.9  
   1280x960       59.9  
   1152x864       60.0  
   1024x768       59.9  
   800x600        59.9  
   640x480        59.4  
   720x400        59.6  
   640x400        60.0  
   640x350        59.8  
VGA-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200      60.0*+
   1920x1080      50.0     60.0     24.0     25.0     30.0  
   1600x1200      60.0  
   1280x1024      75.0     60.0  
   1152x864       75.0  
   1280x720       50.0     60.0  
   1440x576       25.0  
   1024x768       75.1     60.0  
   1440x480       30.0  
   800x600        75.0     60.3  
   720x576        50.0  
   720x480        59.9  
   640x480        75.0     60.0     59.9  
   720x400        70.1  
DP-2 disconnected (normal left inverted right x axis y axis)
$
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