[LAU] Thinkpad R60 for Audio Update - Firewire Conflicts with Audio

[Dmitry Baikov]

Toshiba Satellite A100 (Sampo, Dells here are way too expensive and rare).

           CPU0       CPU1
  0:    4006308          0   IO-APIC-edge      timer
  1:      16408          0   IO-APIC-edge      i8042
  8:    2453050          0   IO-APIC-edge      rtc
  9:      10758          0   IO-APIC-fasteoi   acpi
 12:     146539          0   IO-APIC-edge      i8042
 14:      85257          0   IO-APIC-edge      libata
 15:      26553          0   IO-APIC-edge      libata
 16:     232572          0   IO-APIC-fasteoi   uhci_hcd:usb5, nvidia
 17:     100000          0   IO-APIC-fasteoi   ohci1394
 18:    2866580          0   IO-APIC-fasteoi   tifm_7xx1, yenta,
uhci_hcd:usb4, ipw3945, Indigo IO, sdhci:slot0
 19:       4897          0   IO-APIC-fasteoi   uhci_hcd:usb3
 20:       1946          0   IO-APIC-fasteoi   eth0
 22:        161          0   IO-APIC-fasteoi   HDA Intel
 23:         26          0   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb2
NMI:         69         33
LOC:    4006187    4006108
ERR:          0


Strangely enough, here firewire controller is on the separate line
(this is rare).

Interrupt 18 (with yenta) is very busy, but seems it does not cause
any problems.
The main problem is ACPI.
When it works behind the scenes, it causes jackd to click:
delay of 2202.000 usecs exceeds estimated spare time of 1320.000; restart ...

The only way to workaround this is to boot with acpi=off. The thing
becomes stable as a rock, but looses battery/frequency/temperature
control. Which is a pity.

Dmitry.