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Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop

Cross-posted to 2 groups.

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Hi Ben,

On 13/01/16 00:07, Ben Hutchings wrote:
> Control: tag -1 moreinfo
>
> On Tue, 2016-01-12 at 13:41 +1100, Shaddy Baddah wrote:
>> Package: src:linux
>> Version: 3.16.7-ckt20-1+deb8u2
>> Severity: important
>>
>> Dear Maintainer,
>>
>> After upgrade of linux-image-3.16.0-4-586:i386 from
>> 3.16.7-ckt20-1+deb8u1 to 3.16.7-ckt20-1+deb8u2 on my old Fujitsu P
>> Series Lifebook, an older Pentium M 1GHz laptop, the kernel boot up
>> mostly hangs. Mostly with a cleared screen with no information at all,
>> or otherwise with a message something like (hard to capture):
>>
>>    firewire_ohci 0000:02:00.0: IRQ 00030010 selfID AR_req busReset
>>
>> continually being output to the console with no let-up.
>>
>> Obviously from this bug report, you can see that I have managed to boot
>> with this kernel image. However, I had to append firmware_ohci.debug to
>> the kernel command line to do so. This unexpectedly worked around the
>> problem. Maybe it suggests a timing/race condition issue that is reduced
>> by having console I/O operations intermingle in the kernel operations.
> [...]
>
> We didn't change anything related to firewire in this version, so I
> really doubt this is a regression.
>
> Have you tried a full power-cycle of the laptop?

Definitely performed a full power-cycle. Just starting the day here in
Sydney, and the laptop's been off overnight. Same thing all over. Didn't
come right until firewire_ohci.debug=1 set. For completeness, this may
not have set it right at first attempt (I am unsure if I typed it
right first time).

Also, the message being output (when it appears) is more like this one:

firewire_ohci: IRQ 00020000 busReset

Just to be doubly sure that this is a valid bug report, I'm going to go
back to the previous kernel and see if it was as bullet-proof as I
remembered it.

-- 
Regards,
Shaddy

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Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Shaddy Baddah <beryllium-bugs@shaddybaddah.name> - 2016-01-12 04:10 +0100
  Processed: Re: Bug#810769: linux-image-3.16.0-4-586: boot now  mostly either hangs or repeats, firewire_ohci on older laptop owner@bugs.debian.org (Debian Bug Tracking System) - 2016-01-12 14:10 +0100
  Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Ben Hutchings <ben@decadent.org.uk> - 2016-01-12 14:10 +0100
    Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Shaddy Baddah <beryllium-bugs@shaddybaddah.name> - 2016-01-13 00:40 +0100
      Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Shaddy Baddah <beryllium-bugs@shaddybaddah.name> - 2016-01-13 12:40 +0100
        Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Ben Hutchings <ben@decadent.org.uk> - 2016-01-13 13:00 +0100
          Bug#810769: linux-image-3.16.0-4-586: boot now mostly either hangs or repeats, firewire_ohci on older laptop Shaddy Baddah <beryllium-bugs@shaddybaddah.name> - 2016-01-15 00:50 +0100
  Processed: Re: Bug#810769: linux-image-3.16.0-4-586: boot now  mostly either hangs or repeats, firewire_ohci on older laptop owner@bugs.debian.org (Debian Bug Tracking System) - 2016-01-13 13:00 +0100

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