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[Bug 753216] [NEW] Computer hangs when trying to sleep after external monitor is connected or disconnected

 

Public bug reported:

Binary package hint: xorg

On my System76 Lemur (Ubuntu 10.10, uname -a: "Linux mjumbewu-lemur
2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 18:42:20 UTC 2011 x86_64
GNU/Linux"), suspend will stop working after I configure the machine to
use an external monitor.  It does not matter whether I use multiple
displays or mirror the same display onto both screens.  I use gnome-
display-properties to set up my screens.  In order to use the computer
again I must force a reboot.

Steps to reproduce:
1) Boot computer
2) Connect external monitor (into VGA port)
3) Set up dual heads
4) Disconnect external monitor
5) Close the lid

Expected results:
- Computer goes into standby, as normal.

Actual results:
- Computer remains on and no longer responds to mouse or keyboard.  Fan also spins up.


Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
Architecture: amd64
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768
 edid-base64: AP///////wAwZAMJAQEBASUTAQOAHRF4CoWVmVdPjyYhUFQAAAABAQEBAQEBAQEBAQEBAQEBux1W6lAAGTAjcFoAJ6YQAAAYAAAADwAC0ALQAAUBBUzUAg4AAAAA/gBUTURJU1BMQVkKICAgAAAA/gBMVDEzM0VFMDkxMDAKALA=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
Date: Wed Apr  6 21:55:04 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
Lsusb:
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System76, Inc. Lemur UltraThin
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-28-generic root=UUID=552496e2-92cc-4e0f-87c0-322edc0cb632 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 11/11/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: CALPELLACRB.86C.0000.X.0000000000
dmi.board.asset.tag: Tag 12345
dmi.board.name: Lemur UltraThin
dmi.board.vendor: System76, Inc.
dmi.board.version: lemu2
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: lemu2
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrCALPELLACRB.86C.0000.X.0000000000:bd11/11/2010:svnSystem76,Inc.:pnLemurUltraThin:pvrlemu2:rvnSystem76,Inc.:rnLemurUltraThin:rvrlemu2:cvnSystem76,Inc.:ct10:cvrlemu2:
dmi.product.name: Lemur UltraThin
dmi.product.version: lemu2
dmi.sys.vendor: System76, Inc.
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       x86_64
 kernel:             2.6.35-28-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug maverick

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https://bugs.launchpad.net/bugs/753216

Title:
  Computer hangs when trying to sleep after external monitor is
  connected or disconnected



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References