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SubjectRe: PROBLEM: JVC MP-XP7210 hangs on boot with 2.6.0-test4
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Andrew Morton <akpm@osdl.org> writes:

> Mario Lang <mlang@delysid.org> wrote:
>>
>> I just tried 2.6.0-test4 on my Laptop (JVC MP-XP7210, 256MB RAM, IDE).
>> However, it hangs on boot. I tried booting with acpi=off and also
>> with "acpi=off noapic". Both options seem to help nothing,
>> and the same output appears on all attempts to boot.
>>
>> I compiled the kernel with gcc 3.3.2.
>>
>> Here is the output I get:
>>
>> [<c0 10 92 69>] Kernel_thread_helper+0x5/0xc
>> Code: 0f ba 6e 24 00 c7 44 24 04 00 00 00 00 89 34 24 e8 25 fa ff
>> <0> Kernel Panic: Fatal Exception in Interrupt
>> in interrupt handler - not syncing
>
> There must have been more output than that? Please transcribe some more of
> the backtrace and send it. Don't worry about all the hex numbers: the
> important parts are these:
>
> EIP is at i810fb_cursor+0x1da/0x240 [i810fb]
>
> Call Trace:
> [<...>] apic_timer_interrupt+0x1a/0x20
> [<...>] bh_lru_install+0xb5/0x100
> [<...>] __find_get_block+0x73/0xf0
> [<...>] __getblk+0x2b/0x60
> [<...>] is_tree_node+0x6b/0x70
> [<...>] search_by_key+0x6f9/0xf30
> [<...>] search_for_position_by_key+0x1be/0x3d0
> [<...>] apic_timer_interrupt+0x1a/0x20

Sorry, I did ask a college to type this info for me since I am
blind and can't read screen output at that early stage in the
boot process. It seems he was very lazy.

> Also, try stripping your kernel down by unconfiguring drivers and features
> which are not needed for a successful boot.

Thanks you for reminding me! I should have found this myself.
The problem was that I accidentally enabled ACPI CPU enumeration support
for HT. Well, this is a pIII Mobile, and surely has
no Hyperthreading.

Now the machine boots fine. Only "error" I saw in
dmesg is that my chipset is not yet supported for SpeedStep.

--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang@db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
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