Messages in this thread | | | Date | Mon, 16 Dec 2002 08:52:03 +1100 | From | kevin@sylandro ... | Subject | Re: 2.4.20 st + aic7xxx (Adaptec 19160B) + VIA KT333 repeatable freeze |
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On Sun, Dec 15, 2002 at 01:01:45PM -0700, Justin T. Gibbs wrote: > > On Fri, 13 Dec 2002 11:51:27 +1100, > > Kevin Easton <kevin@sylandro.com> wrote: > >> I'm not sure exactly where this problem fits in, but I'm getting a > >> completely repeatable freeze (100% lockup, no response to keyboard) > >> triggered by writing to /dev/st0 (dd if=/dev/urandom of=/dev/st0 bs=512 > >> count=163840 will reproduce it). > >> So... does anyone have any ideas how I should start trying to track this > >> down? > > You might also look into your BIOS to ensure that the option "PCI Byte > Merging" is disabled. This option allows the chipset to perform illegal > byte merging on the PCI bus that will upset the Adaptec. Since the byte > merging will only occur in certain scenarios (heavily dependent on what > is going on with the SCSI bus), you may only see the lockup when accessing > a particular device or running a certain program. > > The latest versions of the aic7xxx and aic79xx drivers will automatically > detect this broken VIA behavior and will fall back to using PIO for register > access. Although I haven't generated patches against 2.4.20, you can pull > down a src tarball for 2.4.X that should just drop in:
OK, will do - thanks. I don't think the BIOS on this board has such an option, so I might have to put up with PIO register access.
- Kevin.
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