On Wed, Nov 19, 2008 at 11:19:37AM +0100, Jan Sebosik wrote: > Hi > > Yeah, I`ve tested it 2 times (switching it in BIOS). To me it seems bit > mysterious, why there is a relationship between HPET setting and acd/cd > problems in FreeBSD. > > > Jeremy Chadwick napsal(a): >> On Wed, Nov 19, 2008 at 11:08:34AM +0100, Jan Sebosik wrote: >>> Hi again >>> >>> so it seems to be a problem with HPET timer which is onboard and was >>> enabled. If I turned him off, (acd | cd) problems went away. >>> >>> >>> Jan Sebosik napsal(a): >>>> Hi all >>>> >>>> OS: Freebsd 7-STABLE from CVS of today >>>> Problematic HW: Intel DQ45CB (Q45 chipset, ICH10, SATA in native >>>> mode, but not AHCI), LG SATA DVD-RW GH20NS15 >>>> >>>> Problem: if I run freebsd without LG DVD connected to any SATA port >>>> onboard everything works allright. When I connect SATA DVD to >>>> board, then freebsd refuses to boot with messages similar to >>>> those: >>>> >>>> acd0: FAILURE-READ_BIG timed out >>>> unknown: FAILURE-READ_BIG timed out >>>> cddone: goit error 0x5 back >>>> >>>> Messages are repeating forever. >>>> >>>> Anybody knows where should be a bug? >>>> Temporary I`ve disconnected LG SATA burner from system board. >>>> >>>> Thanks for any idea. >>>> >>>> Best regards >> >> Are you ***absolutely 100% certain*** this is true? The time counter >> selected shouldn't have anything to do with the errors you see. >> Please thoroughly test this. >> >> I'd CC jhb@ to get confirmation of my statement, but I've promised >> myself I wouldn't bother him until 2009. :-)
This is very bizarre. The errors being returned from acd0 are that an ATAPI/ATA command (READ_BIG, whatever the code for that is) did not receive a response from the controller or device within 5 seconds (assuming the ata(4) timeout values here; it could be something larger for ATAPI, I don't know). Maybe some a BIOS bug... Can you show us output from the following two commands? sysctl kern.timecounter.choice sysctl kern.timecounter.hardware Soren, do you know how/if the HPET time counter could cause this oddity? All of my systems use ACPI-fast, so I can't test this. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hardware To unsubscribe, send any mail to "[EMAIL PROTECTED]"
