xrandr crash when second monitor is --right-of or --left-of using Radeon drivers

[Simon Mitchell]

When I connect a second monitor to my HP Envy 14, it appears in xrandr and can be enabled with:

xrandr --output HDMI-1 --mode 1440x900
However if I attempt anything but mirroring, for example placing the monitor right of the main display X seems to crash.

xrandr --output HDMI-1 --mode 1440x900 --right-of LVDS
After pressing enter on this command I am kicked back into the lightdm login screen. When I log back in the second monitor reverts to being disabled.

xrandr shows the following:

Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
LVDS connected 1600x900+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1600x900 60.0*+
   1440x900 59.9
   1280x854 59.9
   1280x800 59.8
   1280x720 59.9
   1152x768 59.8
   1024x768 59.9
   800x600 59.9
   848x480 59.7
   720x480 59.7
   640x480 59.4
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
    HDMI-0 connected (normal left inverted right x axis y axis)
   1440x900 59.9 + 75.0
   1280x1024 76.0 75.0 72.0 60.0
   1152x864 75.0
   1024x768 75.1 70.1 60.0
   832x624 74.6
   800x600 72.2 75.0 60.3
   640x480 72.8 75.0 66.7 60.0
   720x400 70.1
   640x350 70.1

I can't see anything written to Xorg.0.log file, the last output seems to be:
------------------------------------------------------------
[ 1464.885] (II) intel(0): EDID vendor "LCD", prod id 3593
[ 1464.885] (II) intel(0): Printing DDC gathered Modelines:
[ 1464.886] (II) intel(0): Modeline "1600x900"x0.0 107.80 1600 1664 1728 1982 900 901 902 907 -hsync -vsync (54.4 kHz)
------------------------------------------------------------
Here is the output of various commands giving driver information:
------------------------------------------------------------
lspci

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Madison [Radeon HD 5000M Series]
------------------------------------------------------------
glxinfo

glxinfo | grep -i vendor
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
OpenGL vendor string: X.Org
------------------------------------------------------------
lsmod

drm_kms_helper 46978 2 i915,radeon
drm 242038 6 i915,radeon,ttm,drm_kms_helper
------------------------------------------------------------
Boot image

BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic root=UUID=5303d529-98e9-4d6a-89bb-c308e712d632 ro quiet splash enable_mtrr_cleanup
------------------------------------------------------------
glxinfo vendor rendering

direct rendering: Yes
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
OpenGL vendor string: X.Org
------------------------------------------------------------
Xorg.0.log LoadModule

[ 21.701] (II) LoadModule: "extmod"
[ 21.723] (II) LoadModule: "dbe"
[ 21.724] (II) LoadModule: "glx"
[ 21.724] (II) LoadModule: "record"
[ 21.724] (II) LoadModule: "dri"
[ 21.725] (II) LoadModule: "dri2"
[ 21.725] (II) LoadModule: "intel"
[ 21.725] (II) LoadModule: "vesa"
[ 21.725] (II) LoadModule: "fbdev"
[ 21.727] (II) LoadModule: "fbdevhw"
[ 21.729] (II) LoadModule: "fb"
[ 21.729] (II) LoadModule: "dri2"
[ 21.914] (II) LoadModule: "evdev"
[ 21.922] (II) LoadModule: "synaptics"
------------------------------------------------------------
lshw -c video

*-display
       description: VGA compatible controller
       product: Madison [Radeon HD 5000M Series]
       vendor: Hynix Semiconductor (Hyundai Electronics)
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:43 memory:a0000000-afffffff memory:c4400000-c441ffff ioport:3000(size=256) memory:c4440000-c445ffff
  *-display
       description: VGA compatible controller
       product: Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 02
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:44 memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:4050(size=8)
------------------------------------------------------------

Disclaimer: I am running Awesome-WM and Cairo-composite-manager not the default window manager. I am still using LightDM. Disabling Cairo does not help. I have even tried launching gnome-settings-daemon to get the gnome-control-center to work but this crashes in exactly the same way after I click apply on the the dialogue box after enabling the second monitor.

[Simon Mitchell (qpaydhdt0rvu-simon-44ecklpsr2zw)]

I originally submitted the question here: http://askubuntu.com/questions/198202/xrandr-crash-when-second-monitor-is-right-of-or-left-of-using-radeon-drivers
It was suggested I submit a bug report.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1065424/+editstatus and add the package name in the text box next to the word Package.

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