v14.04 screen garbled when waking from sleep w/external monitor

[Viswa B]

I have installed v14.04 LTS 64 bit on Acer Aspire One 722 and everything works fine. I then connected an external monitor via HDMI. The external monitor (a HDTV) displays the laptop screen correctly.

But when I close the screen of the laptop with the external monitor connected (putting the laptop to sleep), and open the screen to bring back the laptop out of sleep mode, the screen of the laptop and the external monitor are black with some garbled characters. The only way to recover the session is to shut power off abruptly, and cold boot the laptop.

However, if I use the suspend button to put the laptop to sleep, and then bring the laptop out of sleep mode, the laptop screen and the external monitor display the desktop correctly.

Can someone please help me understand why closing the laptop screen causes issues that are not present when I use the suspend command, and point me to a solution?

Ubuntu 14.04 LTS 64 bit version

viswa@netbook:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty

uname -r: 3.11.0-18-generic

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
Uname: Linux 3.11.0-18-generic x86_64
NonfreeKernelModules: fglrx wl
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sat Jan 24 05:26:41 2015
DistUpgraded: 2014-04-22 18:27:56,752 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: No
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6250] [1002:9804] (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0598]
InstallationDate: Installed on 2013-10-27 (453 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Acer AO722
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=2eac150f-27b7-4f54-879d-5a176d9b6e87 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to trusty on 2014-04-22 (276 days ago)
dmi.bios.date: 03/25/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.01
dmi.board.name: AO722
dmi.board.vendor: Acer
dmi.board.version: V1.01
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAcer:bvrV1.01:bd03/25/2011:svnAcer:pnAO722:pvrV1.01:rvnAcer:rnAO722:rvrV1.01:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: AO722
dmi.product.version: V1.01
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.56-1~ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.3
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Fri Jan 23 17:54:44 2015
xserver.configfile: default
xserver.errors:
 open /dev/dri/card0: No such file or directory
 AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
 AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
 AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
 evdev: CHICONY HP Basic USB Keyboard: Unable to open evdev device "/dev/input/event15".
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2.6
xserver.video_driver: fglrx

[penalvch (penalvch)]

Viswa B, thank you for reporting this and helping make Ubuntu better. As per http://us.acer.com/ac/en/US/content/drivers an update to your computer's buggy and outdated BIOS is available (1.11). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.

Once the BIOS is updated, and the information above is provided, then please mark this report Status New.

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]