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[caixamagica <687553@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

Hyper Threading Technology enables 2nd logical processor.
If this option is enabled in BIOS, the system will freeze after some minutes of usage.
All system freezes: keys combinations are useless, mouse is irresponsible.
This happens not only in Ubuntu, but in other linux distros too.
I'm not an expert, so excuse me for some lack of information, but I'm 200% sure of this bug on my machine:

Acer Travelmate 2700
ATI Mobility Radeon 9000 IGP
Intel Pentium 4 3GHz
512MB DDR

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-23.41-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic i686
Architecture: i386
CurrentDmesg:
 [   37.293238] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=0
 [   38.767452] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=0
 [   45.120033] eth0: no IPv6 routers present
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480
 edid-base64: AP///////wAig90AQx5nPSsOAQOAIRV4Gi/Wl1RMjCMhT1QAAACBAAEBAQEBAQEBAQEBAQEBvBsAoFAgFzAwICYAS88QAAAZAAAADwAgICAgICAgIKD/AjIAAAAA/gAgICAgIEhpdGFjaGkAAAAA/gBUWDM5RDg1VkMxRkEAAIM=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
Date: Wed Dec  8 21:28:28 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 192f:0616 Avago Technologies, Pte. 
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer TravelMate 2700
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-23-generic root=UUID=a026f784-0aea-41fc-b0f3-d2ab8d2c4506 ro quiet splash
ProcEnviron:
 LANGUAGE=pt:pt_BR:en
 LANG=pt_PT.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
dmi.bios.date: 09/30/2004
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.07
dmi.board.name: TravelMate 2700
dmi.board.vendor: Acer
dmi.board.version: V1.07
dmi.chassis.type: 1
dmi.chassis.vendor: ACER
dmi.chassis.version: V1.07
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.07:bd09/30/2004:svnAcer:pnTravelMate2700:pvrV1.07:rvnAcer:rnTravelMate2700:rvrV1.07:cvnACER:ct1:cvrV1.07:
dmi.product.name: TravelMate 2700
dmi.product.version: V1.07
dmi.sys.vendor: Acer
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       i686
 kernel:             2.6.35-23-generic

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


** Tags: ati crash freeze i386 maverick radeon

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https://bugs.launchpad.net/bugs/687553

Title:
  Ubuntu freezes when Hyper Threading is enabled in BIOS