Re: Jack2 Issue

> From: James Warden <warjamy@...>
> Subject: Re: [Jack-Devel] Jack2 Issue
> To: "Marc-Olivier Barre" <marco@...>
> Cc: "JACK Developers" <jack-devel@...>
> Date: Tuesday, June 23, 2009, 2:16 PM
>
> I've read about GEM. That's not really a concern to me
> since I don't use 3D acc on my DAW PC, and the kernel bugs
> were about that.
>
> I have found a fix to my 'hal' problem, for those who face
> a similar issue with xorg 7.4 and hal interaction. The
> following fix will emulate the old behavior so you won't
> need hald running at all (if you, like me, don't want it) :
>
> in /etc/X11/xorg.conf, add this :
>
> Section "ServerFlags"
>         Option "DontZap"  "0"
>         Option "AllowEmptyInput" "0"
>         Option "AutoAddDevices" 
> "0"
>         Option "AutoEnableDevices" "0"
> EndSection
>
> That's it. Now you can start X without hal running.
> I reenabled 2D acc though. The CPU load was unacceptable
> when e.g mouse-scrolling a web page :)
>
> Jack2 is happy again, and me too :)
>
> Cheer!
> J.
>
>
> --- On Tue, 6/23/09, Marc-Olivier Barre <marco@...>
> wrote:
>
> > From: Marc-Olivier Barre <marco@...>
> > Subject: Re: [Jack-Devel] Jack2 Issue
> > To: "James Warden" <warjamy@...>
> > Cc: "Stéphane Letz" <letz@...>,
> "JACK Developers" <jack-devel@...>
> > Date: Tuesday, June 23, 2009, 9:02 AM
> > On Tue, 23 Jun 2009 04:01:27 -0700
> > (PDT), James Warden <warjamy@...>
> > wrote:
> > > that's the kind of debug trace you get from the
> kernel
> > :
> > >
> > >  BUG: using smp_processor_id() in preemptible
> > [00000000] code: Xorg/4002
> > > caller is iounmap_atomic+0xb/0x46
> > > Pid: 4002, comm: Xorg Not tainted 2.6.29.4-rt15
> #1
> > > Call Trace:
> > > [<c01f2af6>] ?
> debug_smp_processor_id+0xa2/0xb4
> > > [<c01180b5>] ? iounmap_atomic+0xb/0x46
> > > [<f89d0fb4>] ?
> i915_gem_pwrite_ioctl+0x244/0x367
> > [i915]
> > > [<c0174655>] ? _slab_irq_disable+0x22/0x42
> > > [<f85f47d2>] ? drm_ioctl+0x1a8/0x21a [drm]
> > > [<f89d0d70>] ?
> i915_gem_pwrite_ioctl+0x0/0x367
> > [i915]
> > > [<c0183390>] ? vfs_ioctl+0x47/0x5d
> > > [<c0183931>] ? do_vfs_ioctl+0x4b3/0x4e9
> > > [<c01368d6>] ? hrtimer_start+0xd/0x11
> > > [<c01270bd>] ? do_setitimer+0x165/0x2b7
> > > [<c0179580>] ? vfs_read+0xe3/0xf4
> > > [<c01839a8>] ? sys_ioctl+0x41/0x58
> > > [<c0102904>] ? sysenter_do_call+0x12/0x26
> > >
> > >
> > > It litters the syslog. When I disable 2D acc and
> DRI
> > from xorg.conf,
> > these
> > > kernel bugs disappear.
> >
> > Hi,
> >
> > Disable GEM in your kernel and try again... And
> eventually,
> > report a bug to
> > the guys working on the intel driver :)
> >
> > Cheers,
> >
> > --
> > Marc-Olivier Barre
> > XMPP ID : marco@...
> > www.MarcOChapeau.org
> >
>
>
>      
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