Date: Thu, 15 Jan 2004 02:30:31 -0600 From: Jon Noack <noackjr@compgeek.com> To: Doug White <dwhite@gumbysoft.com> Cc: current@freebsd.org Subject: Re: 5.2-RELEASE: unable to mount cd-roms Message-ID: <40064FA7.50008@compgeek.com> In-Reply-To: <40042CEE.5000709@compgeek.com> References: <4003AE67.1050704@compgeek.com> <20040113092043.P63000@carver.gumbysoft.com> <40042CEE.5000709@compgeek.com>
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On 1/13/2004 11:37 AM, Jon Noack wrote: > On 1/13/2004 11:23 AM, Doug White wrote: >> On Tue, 13 Jan 2004, Jon Noack wrote: >>> I am unable to mount CD-ROMs with 5.2-RELEASE. I get the >>> following error message: >>> >>> cd9660: /dev/acd0: Input/output error >> >> handy. >> >>> The full dmesg: http://www.noacks.org/freebsd/dmesg.20040113.txt >>> >>> $ grep acd0: dmesg.20040113.txt acd0: FAILURE - MODE_SENSE_BIG >>> status=51<READY,DSC,ERROR> sensekey=ABORTED COMMAND >>> error=4<ABORTED> acd0: FAILURE - MODE_SENSE_BIG >>> status=51<READY,DSC,ERROR> sensekey=ABORTED COMMAND >>> error=4<ABORTED> acd0: <CREATIVEDVD-ROM DVD2240E 03/18/98/1.8A> >>> DVDROM drive at ata0 as master acd0: read 16007KB/s (32015KB/s), >>> 2KB buffer, WDMA2 acd0: Reads: CDR, CDRW, CDDA, DVDROM, packet >>> acd0: Writes: acd0: Audio: play, 65280 volume levels acd0: >>> Mechanism: ejectable tray, unlocked acd0: Medium: CD-ROM 120mm >>> photo disc acd0: WARNING - READ_BIG UDMA ICRC error (retrying >>> request) acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR> >>> sensekey=ILLEGAL REQUEST error=0 >> >> The UDMA error is telling -- I think you may have a bad cable. Try >> running this command in loader before starting the kernel: >> >> set hw.ata.atapi_dma=0 >> >> (or at least check that you aren't setting it to 1 in >> /boot/loader.conf) >> >> If that fixes it, then something is corrupting DMA transactions to >> your DVD drive. Check the cabling, try rearranging your ATA chains >> so it isn't a master device, etc. > > The same cable worked fine for a 60GB dump/restore on Sunday night (a > WD800JB was plugged into it to transfer data to the new hard > drives). Regardless, I'll try a different one when I get home. > > As for the DMA issue, I will quote my original message (yes, I > rebooted each time after changing the value in /boot/loader.conf): > "Also, toggling "hw.ata.atapi_dma" does not change the behavior." > > Jon Noack I've tried different cables, master vs. slave, primary vs. secondary controllers -- none made any difference. Jon Noack -- Doing linear scans over an associative array is like trying to club someone to death with a loaded Uzi. - Larry Wall
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