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[Matej Kenda <matejken@xxxxxxxxx>]

Things are getting even worse on Maverick on Compaq Evo N1015v.

Maverick w/o KMS: ~1100 frames in 5 seconds, content of window visible on the desktop after the window moved
Maverick w/ KMS: glxgears doesn't work (black window)

Maverick w/ KMS: Compositing doesn't work properly: only background image is visible, no menus, icons
Maverick w/o KMS: Compositing doesn't work properly: background not shown at all, slow

01:05.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon Mobility U1 [1002:4336]
     Subsystem: Compaq Computer Corporation Device [0e11:00b0]

** Description changed:

  [Problem]
  Switching to KMS as the default for radeon causes a performance regression, seen with compiz enabled or with 3D games.
  
  This is caused by the new vline support which prevents tearing with Xv
  but reduces performance as a consequence.
  
  [Workarounds]
  Pick your poison:
  * Disable compiz
  * Disable kms (grub: radeon.modeset=0)
  * Patch to revert the vline change
  * Wait for DRI2 page flipping support which will give better results for full-screen apps
  
+ Situation on Maverick is worse on some chips.
  
  [Original Report]
  Binary package hint: xserver-xorg-video-ati
  
  I upgraded my laptop to Lucid somewhere around Alpha 2.
  
  The first thing that I noticed is that the display was much slower than
  in Karmic. I tried to run with and without modesetting, but there is no
  difference.
  
  Compositing worked fine in Karmic, however it is useless in Lucid, which
  means that performance of both 2D and 3D regreessed.
  
  CPU load of Xorg is high as soon as there is some activity on the
  screen.
  
  I was also trying to enable different options in xorg.conf
  (http://dri.freedesktop.org/wiki/ATIRadeon) with no success.
  
  ProblemType: Bug
  Architecture: i386
  CheckboxSubmission: fd17ddbce499316ea5512e53f255b019
  CheckboxSystem: 79d4f9e1ffc31ae443cb2de53cd33e42
  Date: Mon Mar 22 21:21:40 2010
  DistroRelease: Ubuntu 10.04
  DkmsStatus: Error: [Errno 2] No such file or directory
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Compaq Presario
  Package: xserver-xorg-video-radeon 1:6.12.191-1ubuntu2
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     3.3V 32-bit PC Card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=737a8285-476e-4d78-9849-96d939d64b95 ro single
  ProcEnviron:
   LANG=sl_SI.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
  SourcePackage: xserver-xorg-video-ati
  Uname: Linux 2.6.32-16-generic i686
  dmi.bios.date: 11/25/2003
  dmi.bios.vendor: Phoenix
  dmi.bios.version: 0F0B
  dmi.board.name: 07D4h
  dmi.board.vendor: Compaq
  dmi.board.version: KBC Revision: 1328
  dmi.chassis.type: 10
  dmi.chassis.vendor: Compaq
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenix:bvr0F0B:bd11/25/2003:svnCompaq:pnPresario:pvr0100:rvnCompaq:rn07D4h:rvrKBCRevision1328:cvnCompaq:ct10:cvrN/A:
  dmi.product.name: Presario
  dmi.product.version: 0100
  dmi.sys.vendor: Compaq
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-16-generic
  ---
  Architecture: i386
  CheckboxSubmission: fd17ddbce499316ea5512e53f255b019
  CheckboxSystem: 79d4f9e1ffc31ae443cb2de53cd33e42
  DistroRelease: Ubuntu 10.04
  DkmsStatus: Error: [Errno 2] No such file or directory
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Compaq Presario
  Package: xserver-xorg-video-ati 1:6.12.191+git20100314.67e81c8f-0ubuntu0sarvatt
  PackageArchitecture: i386
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     3.3V 32-bit PC Card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=737a8285-476e-4d78-9849-96d939d64b95 ro quiet lapic splash
  ProcEnviron:
   LANG=sl_SI.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
  Tags: lucid lucid
  Uname: Linux 2.6.32-16-generic i686
  UnreportableReason: This is not a genuine Ubuntu package
  UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev powerdev scanner tape video www-data
  dmi.bios.date: 11/25/2003
  dmi.bios.vendor: Phoenix
  dmi.bios.version: 0F0B
  dmi.board.name: 07D4h
  dmi.board.vendor: Compaq
  dmi.board.version: KBC Revision: 1328
  dmi.chassis.type: 10
  dmi.chassis.vendor: Compaq
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenix:bvr0F0B:bd11/25/2003:svnCompaq:pnPresario:pvr0100:rvnCompaq:rn07D4h:rvrKBCRevision1328:cvnCompaq:ct10:cvrN/A:
  dmi.product.name: Presario
  dmi.product.version: 0100
  dmi.sys.vendor: Compaq
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-16-generic
  
- 
  [lspci]
  01:05.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon Mobility U1 [1002:4336]
-     	Subsystem: Compaq Computer Corporation Device [0e11:00b0]
+      Subsystem: Compaq Computer Corporation Device [0e11:00b0]

** Bug watch added: freedesktop.org Bugzilla #28771
   http://bugs.freedesktop.org/show_bug.cgi?id=28771

** Also affects: debian via
   http://bugs.freedesktop.org/show_bug.cgi?id=28771
   Importance: Unknown
       Status: Unknown

-- 
[RS100] desktop became slow after upgrading to Lucid
https://bugs.launchpad.net/bugs/544496
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