XUbuntu 13.10 Graphics freezing after upgrade

[Aristotelian]

My symptoms are similar to bug #1184451; I reported this on that thread and was advised to start a separate thread...

Following update from XUbuntu 12.04 to 13.10, I have been getting frequent graphics freezes in Minecraft, occasionally in Chrome. Sometimes the mouse moves with everything else on the screen frozen; sometimes the mouse is frozen too. Sometimes I can get to terminal with CTR-ALT-F6, sometimes not. CPU temp is typically in the range of 45C-50C (typical idle temp is 32C).

My CPU is Sandy Bridge Celeron G540, with no separate GPU; motherboard is Biostar H77MU3.

Also, I am not sure if this is related, when I boot the computer I get a message stating there is a system error detected but apport always crashes.
/var/log/kern.log contains this error:
[ 3280.805274] ACPI Error: [DSSP] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)
[ 3280.805278] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.CHN0.DRV0._GTF] (Node ffff88011924d960), AE_NOT_FOUND (20130517/psparse-536)

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu6
ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3
Uname: Linux 3.11.0-17-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Wed Mar 5 19:01:06 2014
DistUpgraded: 2014-02-16 07:15:16,909 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Biostar Microtech Int'l Corp Device [1565:110f]
InstallationDate: Installed on 2014-01-14 (50 days ago)
InstallationMedia: Xubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820)
MachineType: BIOSTAR Group H77MU3
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-17-generic root=UUID=b6f53d0f-64d5-4400-85b2-4e0ccaef90fb ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to saucy on 2014-02-16 (17 days ago)
dmi.bios.date: 02/24/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: None
dmi.board.name: H77MU3
dmi.board.vendor: BIOSTAR Group
dmi.board.version: 6.0
dmi.chassis.asset.tag: None
dmi.chassis.type: 3
dmi.chassis.vendor: BIOSTAR Group
dmi.chassis.version: 6.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd02/24/2012:svnBIOSTARGroup:pnH77MU3:pvr6.0:rvnBIOSTARGroup:rnH77MU3:rvr6.0:cvnBIOSTARGroup:ct3:cvr6.0:
dmi.product.name: H77MU3
dmi.product.version: 6.0
dmi.sys.vendor: BIOSTAR Group
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2~saucy1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Wed Mar 5 12:13:50 2014
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Video Bus KEYBOARD, id 7
 input Power Button KEYBOARD, id 8
 input Logitech Unifying Device. Wireless PID:1024 MOUSE, id 9
 input Logitech Unifying Device. Wireless PID:2011 KEYBOARD, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 9363
 vendor ACI
xserver.version: 2:1.14.5-1ubuntu2~saucy1

[Aristotelian (bookrt)]

Based on comment from another forum, I upgraded to experimental graphics drivers using Oibaf PPA. So far this has fixed the problem.

[penalvch (penalvch)]

Aristotelian, thank you for reporting this and helping make Ubuntu better. Saucy reached EOL on July 17, 2014.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Is this an issue in a supported release?

[Launchpad Janitor (janitor)]

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