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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 <>
> An: Dave Airlie <>
> CC: Gerhard Pircher <>,
> 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
> <> 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?


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