PCI Timing issues oldworld w/G4 upgrade

[Rich Dolinsky]

Did you enable L2 cache with Bootx.  It may seem like a silly question if
the answer is yes, otherwise it could be the root of the problem

on 7/21/02 3:41 PM, Robert Serphillips at rserphillips@austin.rr.com wrote:

> Seems to be some issues with the damsound modules when using either a
> PCI nic or a PCI scsi card, in a PM8500 with a G4 400 upgrade. All
> problems go away when I use the original 604 120. If I play mp3's
> while the drive is connected to the adaptec/apple 2930C scsi card and
> generate a system load, the sound drops out and this shows up in my
> log.. 
> 
> dmasound_pmac: tx-irq: xfer died - patching it up...
> 
> The app then freezes and I have to reload the module before I can
> restore sound. By slowing the card down to a 5Mhz clock I can get
> around this.
> 
> I can reproduce the problem in seconds by playing an mp3 and
> generating some traffic across my 530tx 10/100 nic (8139too). Same log
> and same fix as before.
> 
> I have no work around for this. Instead I use the on board mace and
> deal with lower nfs performance.
> 
> I should point out that it's not just an mp3 under xmms that dies.
> Same situation with xine, mpg123 or any app that uses
> the dmasound module.
> 
> 
> Kernel 2.4.18 ( same symptoms with 2.4.10 and 2.4.19)
> PowerMac 8500 
> XLR8 Carrier Card w/G4 400 45Mhz bus.
> 
> 
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