http://bugzilla.kernel.org/show_bug.cgi?id=8186


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------- Comment #43 from [EMAIL PROTECTED]  2007-07-30 13:32 -------
I think I have the same problem.

Hardware: HP dv9000 laptop, dv9000 GH769EA according to bios and dv9398eu
according to hp update utility, bios F.38, AMD64x2 Turion, nvidia graphics,
nforce MCP51 chipset

The computer freezes almost every time it boots. I use ubuntu 7.04 with
linux-image-2.6.20-16-generic package. I have also tried
linux-image-2.6.22-9-generic package which results in same problem.

If the computer boots (maybe 1 of 100) and comes to kde-login then it works
without any problem. So its is probably some problem during the boot, I will
explain later during which steps the computer freezes. 

Sometimes I get the following error message on the console just before the
crash:
error receiving uevent message: No buffer space available

I can make the computer boot if 'noapic' or 'acpi=off' or 'acpi=noirq' kernel
option is used, but then it has other problems:

The noapic option makes the ehci-hcd driver work very strange. It takes a lot
of cpu and receives a lot of interrupts. After a while it crashes unless the
irqpoll option is specifed.

The acpi=off or acpi=noirq make the computer boot too, but now the bcm43xx
gives an error message when it tries to allocate irq 0! and the Xorg nvidia
driver fails and gives an error message about level-triggered irq, but nothing
freezes.


I have tried to boot the computer with the init=/bin/bash optins and striped
down the initrd to contain only thermal, processor, fan, fbcon, tileblit, font,
bitblit, softcursor, vesafb, cfbcopyarea, cfbimgblt, cfbfillrect, capability,
commoncap, sd_mod, ext3, jbd, mbcache, sata_nv, libata, scsi_mod. sd_mod, ext3,
jbd, mbcache, sata_nv, libata, scsi_mod is necesary for boot and the rest can't
be disabled by ubuntu. 

Now the computer starts bash and everything works fine until:

* I run hwclock or udev, then the computer crashes most of the times. 

* I run dmesg or any other program that produces a lot of output to the console
while the ehci or ohci modules are loaded. The computer then freezes. This
behavior disappears if the pci=nomsi options is added, but if udev is started
(and doesn't crash) the computer becomes very sensitive to console output
again.

Right now I am running the computer with noapic option and disable the ehci-hcd
module. But I want to make use of the full performance of the computer.

I heard that there is a bug in the hp bios. I asked the people in the hp linux
forum. I got the answer "Using Linux certified hardware avoids these issues.".


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