misc/69120: Release 4.10 is not able to detect my Samsung 52x CDROM

[Jayant Kumble]

>Number:         69120
>Category:       misc
>Synopsis:       Release 4.10 is not able to detect my Samsung 52x CDROM
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 15 17:30:08 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Jayant Kumble
>Release:        4.10
>Organization:
EDot Solutions
>Environment:
FreeBSD jayant.edotsol 4.10-RELEASE FreeBSD 4.10-RELEASE #0: Tue May 25 22:47:12 GMT 2004     root at perseus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
  
>Description:
I've a SAMSUNG CD-ROM SC-152A which is not detected by FreeBSD .10. while searching for a solution over net I came across a forum where the following was mentioned;
-----------------------------------
add these lines to /boot/loader.conf or /boot/loader.conf.local (create
as necessary):

hw.ata.ata_dma="1"
hw.ata.atapi_dma="1"

Then reboot.
------------------------------

The above doesn't seem to work for me. But a funny thing happend now, below is a partial output of my dmesg;
------------------------------
acd0: MODE_SENSE_BIG command timeout - resetting
ata1: resetting devices .. done
acd0: MODE_SENSE_BIG command timeout - resetting
ata1: resetting devices .. done
acd0: CDROM <SAMSUNG CD-ROM SC-152A> at ata1-master WDMA2
Mounting root from ufs:/dev/ad0s3a
acd0: TEST_UNIT_READY command timeout - resetting
ata1: resetting devices .. done
acd0: TEST_UNIT_READY command timeout - resetting
ata1: resetting devices .. done
----------------------------------

It seems like it did detect the cdrom after a long time but still I can't mount it and the TEST_UNIT_READY command still fails(I thing this came up after I tried to mount it).

Devices listed by KDE's Info Center (tree view)
---------------------------------------------
pcib0 (Host to PCI bridge)
 -> pci0 (PCI bus)
  -> atapci0 (Intel ICH4 ATA100 Controller)
   ->ata1 (ata1: at 0x170 irq 15 on atapci0)
    -> acd0 (SAMSUNG CD-ROM SC-152A)
   ->ata0 (ata0:at 0x1f0 irq 14 on atapci0)
    -> ad0 (SAMSUNG SP0411N)
-------------------------------------------------
Motherboard :  ASUS P4BGL-MX (Intel 810 chipset)
>How-To-Repeat:
Reboot the system.

The following message appears while booting,
acd0: MODE_SENSE_BIG command timeout - resetting
ata1: resetting devices .. done

>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: