Trouble with 2.6.21-5 on Cobalt Qube2

["Sébastien Vajda" <sebvajda@gmail.com>]

Dear all,

I've been trying without success to boot my Cobalt Qube2 with the
latest kernel 2.6.21-5. It fails to boot because of this error/problem
with the IDE driver:

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 0000:00:09.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c586a (rev 27) IDE UDMA33 controller on pci0000:00:09.1
   ide0: BM-DMA at 0x1420-0x1427, BIOS settings: hda:pio, hdb:pio
   ide1: BM-DMA at 0x1428-0x142f, BIOS settings: hdc:pio, hdd:pio
ide0: I/O resource 0xF00003F6-0xF00003F6 not free.
ide0: ports already in use, skipping probe
ide1: I/O resource 0xF0000376-0xF0000376 not free.
ide1: ports already in use, skipping probe
ide0: I/O resource 0xF00003F6-0xF00003F6 not free.
ide0: ports already in use, skipping probe
ide1: I/O resource 0xF0000376-0xF0000376 not free.
ide1: ports already in use, skipping probe
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
VFS: Cannot open root device "hda2" or unknown-block(0,0)
Please append a correct "root=" boot option

Note that with the 2.6.18+6 kernel, I don't have this problem and the
kernel is able to find my disk and the boot process successfully
continue.

With the qube2 booted with 2.6.18+6 kernel the content of /proc/iomem
is the following:

00000000-0fffffff : System RAM
 00080000-0027ebdf : Kernel code
 0027ebe0-002f20bf : Kernel data
12000000-13ffffff : PCI memory
 12000000-1203ffff : 0000:00:07.0
 12040000-1207ffff : 0000:00:0c.0
 12080000-12080fff : 0000:00:0a.0
   12080000-12080fff : ohci_hcd
 12081000-12081fff : 0000:00:0a.1
   12081000-12081fff : ohci_hcd
 12082000-120823ff : 0000:00:07.0
   12082000-120823ff : tulip
 12082400-120827ff : 0000:00:0c.0
   12082400-120827ff : tulip
 12082800-120828ff : 0000:00:0a.2
   12082800-120828ff : ehci_hcd

and lspci gives (as you can see I added a USB 2.0 PCI card to the qube2):

00:00.0 Host bridge: Marvell Technology Group Ltd. Unknown device 4146 (rev 11)
00:07.0 Ethernet controller: Digital Equipment Corporation DECchip
21142/43 (rev 41)
00:09.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA
[Apollo VP] (rev 27)
00:09.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:09.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 02)
00:0a.0 USB Controller: NEC Corporation USB (rev 43)
00:0a.1 USB Controller: NEC Corporation USB (rev 43)
00:0a.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
00:0c.0 Ethernet controller: Digital Equipment Corporation DECchip
21142/43 (rev 41)

Any idea what I can do next to solve the problem? Maybe someone can
reproduce the problem?

Regards,
Seb