SVGA server locks system with SCSI kernel

SVGA server locks system with SCSI kernel

Post by Jason Buchan » Fri, 03 Apr 1998 04:00:00



What's the recommendation for avoiding system lockups when using
the SVGA server with a SCSI kernel loaded?

If I boot an IDE kernel, all is well.  If I recompile the same kernel
with SCSI (aha7xxx) enabled, the system freezes when I start X.

I don't see any IRQ conflicts in cat /proc/pci...

PCI devices found:
  Bus  0, device  11, function  0:
    SCSI storage controller: Adaptec AIC-7881U (rev 0).
      Medium devsel.  Fast back-to-back capable.  IRQ 4.  Master Capable.  Latency=32.  Min Gnt=8.Max Lat=8.
      I/O at 0x9200.
      Non-prefetchable 32 bit memory at 0xe0804000.
  Bus  0, device  10, function  0:
    VGA compatible controller: Matrox Millennium (rev 1).
      Medium devsel.  Fast back-to-back capable.  IRQ 10.
      Non-prefetchable 32 bit memory at 0xe0800000.
      Prefetchable 32 bit memory at 0xe0000000.
  Bus  0, device   9, function  0:
    Ethernet controller: 3Com 3C905 100bTX (rev 0).
      Medium devsel.  IRQ 11.  Master Capable.  Latency=248.  Min Gnt=3.Max Lat=8.
      I/O at 0x9100.
  Bus  0, device   7, function  1:
    IDE interface: Intel 82371SB Natoma/Triton II PIIX3 (rev 0).
      Medium devsel.  Fast back-to-back capable.  Master Capable.  Latency=32.
      I/O at 0xf000.
  Bus  0, device   7, function  0:
    ISA bridge: Intel 82371SB Natoma/Triton II PIIX3 (rev 1).
      Medium devsel.  Fast back-to-back capable.  Master Capable.  No bursts.
  Bus  0, device   0, function  0:
    Host bridge: Intel 82441FX Natoma (rev 2).
      Medium devsel.  Fast back-to-back capable.  Master Capable.  Latency=32.

Any suggestions?  

Regards,
Jason.

--        
      /
  /  o      Jason Buchanan
 o          Digistar Microsystems / OnTheNet, LLC

       o    http://www.digistar.com/~jsb/

 
 
 

SVGA server locks system with SCSI kernel

Post by Stefaan A Eecke » Fri, 03 Apr 1998 04:00:00




Quote:

> What's the recommendation for avoiding system lockups when using
> the SVGA server with a SCSI kernel loaded?

Normally, there are *no* lockup problems.

Quote:> If I boot an IDE kernel, all is well.  If I recompile the same kernel
> with SCSI (aha7xxx) enabled, the system freezes when I start X.

> I don't see any IRQ conflicts in cat /proc/pci...

Nope, but not all devices in a PC are on the PCI bus (see below) :-)

Quote:

> PCI devices found:
>   Bus  0, device  11, function  0:
>     SCSI storage controller: Adaptec AIC-7881U (rev 0).
>       Medium devsel.  Fast back-to-back capable.  IRQ 4.  Master Capable.

                                                    ^^^^^^
How about reconfiguring your card to use another IRQ than
your serial port? Could you possibly have your mouse on
COM1?

HTH

--
Stefaan
--

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