[Bug 194523] Re: computer frozen

[Onkar Shinde]

I can confirm the bug. It is caused by some combination of modules b43,
rfkill, rfkill_input. I have observed the problem in 2.6.25 kernel image
available in repositories as well as unofficial 2.6.27 kernel image
created by Michael Casadevall (NCommander/sonicmctails). I remember
seeing this problem on some kernel image on hardy (probably 2.6.24). But
since my ibook was not in working state for last few months prior to
seeing the problem for first time and since I was eager to update to
intrepid I didn't bother to debug it.

Following are my observations on my ibook powerpc with broadcom 4306 chipset based wireless NIC.
1. The UI freezes randomly. At no point it returns to normal state. Most of the time the computer reboots automatically after some time.
2. If I am using console (Ctrl + Alt + F1), at the time of panic I see some messages related to either rfkill_input or b43_interrupt_handler. After that most of the time I get message that computer will reboot in 180 seconds and it actually does.
3. Yesterday I unloaded all the modules I have mentioned (modprobe -r) and I didn't get any UI freeze for more than four hours. I was connected to internet via wired NIC, watched movie using a DVD, had chats with friends, upgraded the machine with latest updates. No problems at all.

I plan to blacklist the modules one by one so that I can identify which
actually causes problem. Also If I get the kernel panic message, I will
take a photo and attach to this bug.

Hope this helps.

** Changed in: linux-meta (Ubuntu)
       Status: Invalid => Confirmed

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computer frozen
https://bugs.launchpad.net/bugs/194523
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