Messages in this thread |  | | | Date | Wed, 13 Mar 2002 15:58:29 GMT | | Subject | Re: IO-APIC -- lockup on machine if enabled | | From | (Jonathan H N Chin) |
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Dave Jones <davej@suse.de> writes: >On Wed, Mar 13, 2002 at 08:34:22AM -0500, Josh Fryman wrote: > > i have a new laptop (Dell Latitude C610) running 2.4.18-rc4. when i built the > > new kernel, i thought i would amuse myself by turning on IO-APIC.
> "Don't do that" 8-)
Unfortunately, at least on my C800 here, not using it breaks IEEE1394:
kernel: ohci1394_0: Waking dma ctx=2 ... processing is probably too slow
and communication breaks down shortly after (have to unload/reload the modules to make it work again). On the other hand, with IO-APIC + Local APIC enabled (APM and ACPI disabled) firewire works fine.
I note that W2K on the same machine appears to have no trouble using both IEEE1394 and power management together. (I have booted W2K less than ten times though versus half a year of linux use, so this may be a false impression.)
-jonathan
-- Jonathan H N Chin, 1 dan | deputy computer | Newton Institute, Cambridge, UK <jc254@newton.cam.ac.uk> | systems mangler | tel/fax: +44 1223 335986/330508 "respondeo etsi mutabor" --Rosenstock-Huessy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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