[Bug 42398] Dapper kernel 2.6.15-21 K7 and others hang probing CK804 IDE

[michaeljt]

Public bug reported:

Affects: linux-meta linux (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed


Description:
I am using an AMD Sempron64 with an nVidia nForce4 CK804 chipset.  When
I boot the above kernel (with the bootsplash disabled), I the system
hangs.  Below is an extract from the console output.  The 2.6.12-9 386
kernel from breezy works, but all dapper ones I have tried do not.  I
tried compiling vanilla 2.6.12, 2.6.15 and 2.6.16 kernels from
kernel.org, each with an almost identical minimal configuration.  2.6.12
did not exhibit the problem but the other two did.  Some google searches
indicate that the problem is not Ubuntu-specific and may be related to
ACPI.  If I set "ide=nodma" in the kernel command line, I can boot
successfully, but some modules (e.g. forcedeth nVidia ethernet) fail.
If I set "acpi=off", boot is successful, but the mouse does not work.

NFORCE-CK804: IDE controller at PCI slot 0000:00:06.0
NFORCE-CK804: chipset revision 242
NFORCE-CK804: not 100% native mode: will probe irqs later
     ide0: BM-DMA at 0x1000-0x1007, BIOS settings: hda:DMA, hdb: DMA
NFORCE-CK804 Bus-Master DMA disabled (BIOS)
hda: WDC WD1600JB-00REA0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdc: HL-DT-ST DVDRAM GSA-4167B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 ob irq 15
SCSI subsystem initialized
hda: max request size 1024KiB
hda: cache flushes supported
 hda:<4>hda: dma_timer_expiry: dma_status == 0xff
hda: dma_timer_expiry: dma_status == 0xff
hda: dma_timer_expiry: dma_status == 0xff
(...)
Done.
Begin: Waiting for root file system... ...
hda: dma_timer_expiry: dma_status == 0xff
(...)
Done.
ALERT! /dev/hda2 does not exist. Dropping to a shell!
(shell...)

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Dapper kernel 2.6.15-21 K7 and others hang probing CK804 IDE
https://launchpad.net/bugs/42398