[PlanetCCRMA] Weird problems using RT on FC6

[Stephan Neuhaus]

Fernando Lopez-Lezcano wrote:
> Hmmm, sounds bad indeed and is probably a bug in the stock kernel with
> your particular hardware configuration (as it happens in both the Fedora
> kernel and the Planet CCRMA kernel with the rt patch).

It certainly looks that way.  That would be bad, however, so I'll just 
home that there is an easy fix :-)

>  What is the  output of /sbin/lspci?

00:00.0 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:00.1 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:00.2 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:00.3 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:00.4 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:00.5 PIC: VIA Technologies, Inc. P4M890 I/O APIC Interrupt Controller
00:00.6 Host bridge: VIA Technologies, Inc. P4M890 Security Device
00:00.7 Host bridge: VIA Technologies, Inc. P4M890 Host Bridge
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
00:02.0 PCI bridge: VIA Technologies, Inc. P4M890 PCI to PCI Bridge 
Controller
00:03.0 PCI bridge: VIA Technologies, Inc. P4M890 PCI to PCI Bridge 
Controller
00:0a.0 Multimedia audio controller: VIA Technologies Inc. ICE1712 
[Envy24] PCI Multi-Channel I/O Controller (rev 02)
00:0f.0 IDE interface: VIA Technologies, Inc. VT8237A SATA 2-Port 
Controller (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 07)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev a0)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev a0)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev a0)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev a0)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237A PCI to ISA Bridge
00:11.7 Host bridge: VIA Technologies, Inc. VT8251 Ultra VLINK Controller
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] 
(rev 7c)
00:13.0 PCI bridge: VIA Technologies, Inc. VT8237A Host Bridge
02:00.0 VGA compatible controller: ATI Technologies Inc RV516 XT Radeon 
X1600 Series Primary
02:00.1 Display controller: ATI Technologies Inc RV516 XT Radeon X1600 
Series Secondary
04:01.0 Audio device: VIA Technologies, Inc. VIA High Definition Audio 
Controller (rev 10)

> Does the machine run fine with any other operating system? This could be
> something as simple as a bad ATA cable...

The machine is rock solid both under Linux (Stock FC6 kernel) and 
Windows XP, as long as I don't launch jackd.  I haven't tried any other 
RT application, but the same problems happen with the RT kernel even 
when I don't use jackd.  Since this might be confusing, here is a little 
diagram:

                 jackd   | no jackd
-------------+----------+---------
Stock kernel | unstable | stable
-------------+----------+---------
RT kernel    | unstable | unstable

I'm pretty sure that it has to do with the RT subsystem.  Should I post 
this to any Fedora mailing lists?

Thanks in advance,

Stephan