Re: Jack2 Issue

by James Warden :: Rate this Message:

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
>

_______________________________________________
Jack-Devel mailing list
Jack-Devel@...
http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org

« Return to Thread: Jack2 Issue