[Bug 1103385] [NEW] Raring crashes on 12.04 LTS host with cirrus @800x600

[Roman Yepishev]

Public bug reported:

STR:

1. Install 13.04 current in 12.04 LTS kvm machine
2. Change resolution to 800x600 in the guest
3. Log out
4. Log in

Expected results:
Unity desktop is displayed

Actual results:
Virtual machine hangs, restarts (with no kernel panic). Sometimes general protection fault is seen in dmesg (and bad swap file message too)

Changing cirrus model to a vga makes it possible for VM to login
properly.

The reason why I was switching to a lower resolution is because the
display did not fit into my netbook properly.

In guest 12.10 changing resolution works as expected on both cirrus and
vga.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: qemu-kvm 1.0+noroms-0ubuntu14.7
ProcVersionSignature: User Name 3.2.0-35.55-generic 3.2.34
Uname: Linux 3.2.0-35-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
Date: Wed Jan 23 11:30:57 2013
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
MachineType: System manufacturer System Product Name
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic root=/dev/mapper/hostname-root ro
SourcePackage: qemu-kvm
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/28/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2302
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A785T-M
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2302:bd02/28/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A785T-M:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

** Description changed:

  STR:
  
  1. Install 13.04 current in 12.04 LTS kvm machine
  2. Change resolution to 800x600 in the guest
  3. Log out
  4. Log in
  
  Expected results:
  Unity desktop is displayed
  
  Actual results:
  Virtual machine hangs, restarts (with no kernel panic). Sometimes general protection fault is seen in dmesg (and bad swap file message too)
  
  Changing cirrus model to a vga makes it possible for VM to login
  properly.
  
  The reason why I was switching to a lower resolution is because the
  display did not fit into my netbook properly.
+ 
+ In guest 12.10 changing resolution works as expected on both cirrus and
+ vga.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: qemu-kvm 1.0+noroms-0ubuntu14.7
  ProcVersionSignature: User Name 3.2.0-35.55-generic 3.2.34
  Uname: Linux 3.2.0-35-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  Date: Wed Jan 23 11:30:57 2013
  InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64 (20120424.1)
  MachineType: System manufacturer System Product Name
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic root=/dev/mapper/hostname-root ro
  SourcePackage: qemu-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/28/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2302
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M4A785T-M
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2302:bd02/28/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A785T-M:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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Title:
  Raring crashes on 12.04 LTS host with cirrus @800x600

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