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    SubjectRe: [2.6.25-rc6] possible regression: X server dying

    -------- Original-Nachricht --------
    > Datum: Tue, 8 Apr 2008 23:01:26 +0200 (CEST)
    > Von: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
    > An: Dave Airlie <airlied@gmail.com>
    > CC: Gerhard Pircher <gerhard_pircher@gmx.net>, linux-kernel@vger.kernel.org
    > Betreff: Re: [2.6.25-rc6] possible regression: X server dying

    > On Tue, 8 Apr 2008, Dave Airlie wrote:
    >
    > > On Mon, Apr 7, 2008 at 12:34 AM, Gerhard Pircher
    > <gerhard_pircher@gmx.net> wrote:
    > > >
    > > > Sorry for hijacking this thread, but I have a similar problem with
    > > > the Xorg X server. I'm using kernel 2.6.25-rc8 on my AmigaOne
    > > > (PowerPC) and the X server dies right on startup, but only if
    > > > DRI/DRM is enabled. I tested this with both Xorg 7.1 (Debian Etch
    > > > version) and Xorg 7.2 (Lenny). The X server was working fine with
    > > > kernel 2.6.25-rc6. I have to mention that the AmigaOne uses uncached
    > > > memory for DMA operations. Benjamin Herrenschmidt fixed DRI recently
    > > > for non cache coherent systems and his patches are working fine (I
    > > > applied them to kernel 2.6.25-rc6).
    > > > Please take a look at the attached Xorg.0.log file or at the excerpt
    > > > below:
    >
    > Hm, so looks like I'm not seeing some ghosts on mine either. 2.6.25-rc8
    > xorg runs under etch, but enters a tight (no syscalls) loop woth 100% CPU
    > load under lenny. A 2.6.24 based kernel works under both etch and
    > lenny...
    Strange! I guess I should recompile the kernel and test again. :(
    I also experienced a high load under Lenny, but IIRC this showed up under
    an older kernel (2.6.18), too (after X server is started, standard
    installation, no additional packages).

    > Haven't had time to try to localize the problem. Glint xorg driver, DRM
    > and AGP are off, CONFIG_FB_PM2=y.
    The X server only dies on my machine, if DRM is on. I read somewhere that
    the lastest DRM patches need a newer Xorg version (~7.3). Could that be
    the problem with kernel 2.6.25-rc8?

    Thanks!

    Gerhard
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