[Bug 570434] [NEW] IRQ conflict with pci sata vt6421 with two hd

[Oltion Kola]

Public bug reported:

My computer hangs when booting because of a irq conflict.
I have a PCI adapter for SATA drives with sata and usb ports with VT6421 chipset.
When I put only one HD then the system is OK.
When I boot up with two HD in the sata ports the system behaves badly. Most of the time it hangs (3 over 4 tries) in the 2 first seconds.
I have tried the options in the irq debug guide but it does not help.
Please, let me know if there is something I can do to debug the problem.
Thanks

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-21-generic 2.6.32-21.32
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  olti       1268 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 17'
   Mixer name	: 'Analog Devices AD1981B'
   Components	: 'AC97a:41445374'
   Controls      : 26
   Simple ctrls  : 18
CurrentDmesg:
 [   18.820236] b44: eth1: Link is up at 100 Mbps, full duplex.
 [   18.820243] b44: eth1: Flow control is off for TX and off for RX.
 [   18.820581] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
 [   29.816170] eth1: no IPv6 routers present
Date: Mon Apr 26 23:14:53 2010
HibernationDevice: RESUME=UUID=78bd97bc-8c7b-48b0-8c87-13780d942f8e
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate i386 (20100419.1)
IwConfig:
 lo        no wireless extensions.
 
 eth1      no wireless extensions.
MachineType: Dell Computer Corporation Dimension 2400
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=d700ba56-8a55-4228-9d46-07468a334fe0 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 
SourcePackage: linux
dmi.bios.date: 12/02/2003
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A05
dmi.board.name: 0G1548
dmi.board.vendor: Dell Computer Corp.
dmi.board.version: A00
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA05:bd12/02/2003:svnDellComputerCorporation:pnDimension2400:pvr:rvnDellComputerCorp.:rn0G1548:rvrA00:cvnDellComputerCorporation:ct15:cvr:
dmi.product.name: Dimension 2400
dmi.sys.vendor: Dell Computer Corporation

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid needs-upstream-testing

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IRQ conflict with pci sata vt6421 with two hd
https://bugs.launchpad.net/bugs/570434
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