Public bug reported:
Binary package hint: xserver-xorg-video-intel
Hi,
I'm running an up-to-date version of Gutsy on Dell Latitude D500 laptop,
which has an intel graphics card.
With the intel driver (version 2:2.1.1-0ubuntu3), installed by default,
the laptop's LCD panel remains on when the laptop is used with an
external monitor connected and the lid closed, using a docking station.
This is obviously wasting power and making it quite warm!
The laptop panel is off when GRUB loads, but is switched on when X
starts and the login screen appears. Using the key combinations to cycle
CRT/LCD display has no effect.
As a workaround, i have installed 'i810switch' and run the command
'i810switch lcd off' after login.
This problem does NOT occur using Kubuntu Feisty, with the i810 driver -
with this the laptop lcd remains off if booted with lid closed and
external monitor attached.
Relevant sections from 'lspci':
***************************
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated
Graphics Device (rev 02) (prog-if 00 [VGA])
Subsystem: Dell Unknown device 0152
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
Region 1: Memory at faf80000 (32-bit, non-prefetchable) [size=512K]
Region 2: I/O ports at c000 [size=8]
Capabilities: [d0] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics
Device (rev 02)
Subsystem: Dell Unknown device 0152
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
Region 1: Memory at faf00000 (32-bit, non-prefetchable) [size=512K]
Capabilities: [d0] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>From xorg.conf:
**************
Section "Device"
Identifier "Intel Corporation 82852/855GM Integrated Graphics
Device"
Driver "intel"
BusID "PCI:0:2:0"
EndSection
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation 82852/855GM Integrated Graphics
Device"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Modes "1024x768"
EndSubSection
EndSection
Let me know if you need any more info.
** Affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
Status: New
--
laptop screen remains on with external monitor and lid closed
https://bugs.launchpad.net/bugs/145501
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