xorg freezes with xmir after xrandr --output VGA-0 --off

[Chris Gagnon]

Description:
xorg freezes with xmir after xrandr --output VGA-0 --off :
Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152]
Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0162]
did not happen on:
  Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0122]

steps:
1. install saucy
2. sudo apt-get install unity-system-compositor xserver-xorg-video-intel
3. reboot
4. change resolution with xrandr --output <video-output-here> --off (I did xrandr --output VGA-0 --off)

expected result:
resolution changes

actual results:
xorg hangs

versions:
xserver-xorg-xmir 2:1.14.2.901-2ubuntu5

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xserver-xorg 1:7.7+1ubuntu5
ProcVersionSignature: Ubuntu 3.11.0-8.15-generic 3.11.1
Uname: Linux 3.11.0-8-generic x86_64
ApportVersion: 2.12.4-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Wed Sep 25 18:45:25 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0162] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Intel Corporation Device [8086:2040]
InstallationDate: Installed on 2013-09-25 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130923.2)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-8-generic root=UUID=d5babda6-5ee7-4e77-9cf7-6bef98411d24 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/08/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BHZ7710H.86A.0057.2012.0208.1904
dmi.board.name: DZ77BH-55K
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG39008-400
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBHZ7710H.86A.0057.2012.0208.1904:bd02/08/2012:svn:pn:pvr:rvnIntelCorporation:rnDZ77BH-55K:rvrAAG39008-400:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.10+13.10.20130920-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu5
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Wed Sep 25 17:37:53 2013
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Video Bus KEYBOARD, id 7
 input Power Button KEYBOARD, id 8
 input Raritan D2CIM-DVUSB KEYBOARD, id 9
 input Raritan D2CIM-DVUSB MOUSE, id 10
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs: Output DP-1 HDMI-0 HDMI-1
xserver.version: 2:1.14.2.901-2ubuntu5
xserver.video_driver: intel

[Chris Gagnon (chris.gagnon)]

cat /sys/kernel/debug/dri/0/i915_error_state
no error state collected

[Chris Gagnon (chris.gagnon)]

This doesn't freeze when MIR_BYPASS=0 is exported in /usr/sbin/unity-system-compositor.sleep