From: google@holzapfel.biz   
      
   Desperately trying to set up my PCI/MCA PC 750 with Debian Sarge (3.1) and a   
   2.4.27 Linux kernel.   
   With out-of-the-box and custom kernels, the MCA bus is detected at startup,   
   but no devices are accessible. /proc/mca/pos shows all FF FF for adapter IDs,   
   and MCA adapter drivers don't find any devices.   
      
   If I set kernel cmdline to pci=off or pci=nobios, the MCA bus is still   
   detected at startup, and devices become accessible.   
   But now, /proc/pci is empty, and PCI devices are unavailable!   
   lspci shows the device anyway, but some are not working anymore.   
   The Matrox VGA card works with XFree 4 anyway (why?), but the PCnet32 PCI   
   ethernet card is not enumerated.   
      
   The trouble must come from the PCI/MCA bridge and the 2.4 kernel code somehow.   
   Booting the same system with Debian Potato (2.2) and a 2.2 kernel gives me   
   both PCI and MCA buses.   
      
   Any way to make the 2.4 kernel recognize both PCI and MCA on that system?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)