Ok ... i tested both (2.6.28 and 2.6.29, the latest mainline versions).

WARNING: the 2.6.28 version messed up my ecryptfs home directory ...

But there were no blanking problems with either of them.

2009/5/6 jtholmes <email address hidden>

> Could one or more of you switch to the mainline kernel
> 2.6.28  at http://kernel.ubuntu.com/~kernel-ppa/mainline/<http://kernel.ubuntu.com/%7Ekernel-ppa/mainline/>
> if you know how to install one and see if that makes
> a difference, or for those that are really brave could
> you use the 2.6.29  mainline and report back.
>
> Thanks in advancehttp://kernel.ubuntu.com/~kernel-ppa/mainline/<http://kernel.ubuntu.com/%7Ekernel-ppa/mainline/>
>
> --
> [RV250][JAUNTY]  X Freezes with Radeon driver EXA/XAA Composite
> https://bugs.launchpad.net/bugs/348332
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “linux” source package in Ubuntu: New
> Status in “xserver-xorg-video-ati” source package in Ubuntu: Confirmed
> Status in “xserver-xorg-video-ati” source package in Fedora: New
> Status in “xserver-xorg-video-ati” source package in Mandriva: New
>
> Bug description:
> Binary package hint: xserver-xorg-video-ati
>
> I am not able to use Jaunty with my Radeon 9000 RV250 Graphicscard..
> When leaving the default settings after install it takes only a few minutes
> or somtimes seconds then X freezes or goes Black.. Default means EXA and
> Composite enabled..  Even if I just disable composite (KWin), this Bug still
> apears..
>
> Allthough if I manual swich the accelleration to use XAA by configuring
> xorg.conf and disable composite then I am able to use my Computer with out
> having any Freezes or Blackouts, if I use XAA and have composite (KWin) on
> it will freez again... But using KDE4 without composite is just no fun ;-)
>
> So I dont know where this Bug acually belongs, so I guess in the Radeon
> driver..
> With my other Computer, one with nvidia GPU and another one with intel GPU
> have no issues..
>
> Systeminfo:
> Description:    Ubuntu jaunty (development branch)
> Release:        9.04 32bit
> Linux jscurtu-desktop 2.6.28-11-generic #37-Ubuntu SMP Mon Mar 23 16:40:23
> UTC 2009 i686 GNU/Linux
>
> Hardware:
> CPU:        AMD Sempron(tm) Processor 3000+ processors (1 cpu cores)
> (version 2.20.00)
> Chipset:   VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890 South]
> GPU:        ATI Technologies Inc Radeon RV250 If [Radeon 9000] (rev 01)
> VIVO
>
> xserver-xorg-video-radeon:
>  Installiert: 1:6.12.1-0ubuntu1
>  Kandidat: 1:6.12.1-0ubuntu1
>
> ProblemType: Bug
> Architecture: i386
> DistroRelease: Ubuntu 9.04
> Package: xserver-xorg-video-ati 1:6.12.1-0ubuntu1
> ProcEnviron:
>  LANGUAGE=
>  LANG=de_DE.UTF-8
>  SHELL=/bin/bash
> ProcVersion: Linux version 2.6.28-11-generic (buildd@palmer) (gcc version
> 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #37-Ubuntu SMP Mon Mar 23 16:40:23 UTC 2009
> SourcePackage: xserver-xorg-video-ati
> Uname: Linux 2.6.28-11-generic i686
>
> [lspci]
> 00:00.0 Host bridge [0600]: VIA Technologies, Inc. K8M800 Host Bridge
> [1106:0204]
>        Subsystem: VIA Technologies, Inc. K8M800 Host Bridge [1106:0204]
> 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon RV250
> If [Radeon 9000] [1002:4966] (rev 01)
>        Subsystem: PC Partner Limited Device [174b:7194]
>
>