modulewth, thank you for attaching the oops and testing the mainline.
The next thing we need to know is did this USB bluetooth dongle not
crash in an earlier version of Ubuntu? If so, which one(s)?
** Summary changed:
- Bluetooth mouse crashes Ubuntu
+ kernel BUG at /build/buildd/linux-3.2.0/mm/slub.c:3427!; EIP is at
kfree+0x10f/0x120
** Description changed:
- Just a few days ago I fresh installed Ubuntu 12.04 32-bits in my laptop.
+ Just a few days ago I fresh installed Ubuntu 12.04 32-bits in my laptop.
I have a bluetooth dongle attached to an USB port and a bluetooth mouse
paired with it.
Since the installation I've been experiencing multiple crashes, quite
randomly, until I found out that turning off my bluetooth mouse solved
it. In fact, I had to do it so I could install Ubuntu.
As I said, I couldn't find yet a clearly situation in which the crash
occurs. It can happen just a few seconds after turning the mouse on,
hours later, or when returning from a suspension state. Actually, the
only certain situation for a crash I found out is when returning from
suspension mode.
So, some steps to reproduce this bug are:
1) Turn on bluetooth mouse
2) Turn on computer and log on Ubuntu
3) Wait
or, alternatively:
3.0) Suspend your session
3.1) Return from suspension
Results can be three:
A) Computer is completely frozen, showing the last screen. Mouse cursor is on
the screen, you can't move it and any keyboard command has no effects (I can't
go to terminal nor restart X).
B) Similar to A, but the screen is black, showing just the cursor.
C) Screen shows lots of messages, probably from a kernel oops.
In all cases, I have to do a hard reboot.
I've been experiencing this issue since Ubuntu 11.10 (Ubuntu 11.04 worked
flawlessly). However, I don't think it's just an Ubuntu related issue. Trying
to install Fedora 16 also resulted in multiple crashes.
-
I tried to reproduce these situations, and I'm attaching the correspondent
kern.log here. However, I didn't found any relevant information in the output
of Situation 2 and 3.
Situation 1) Turned the mouse on, with system already running. Just a few
seconds after, screen went black (with cursor in it) and totally frozen. Had to
do a hard reboot.
Situation 2) Turned the mouse on before booting the system. After login,
waited a few moments and entered suspension mode. After some moments returned
from suspension. Ubuntu was froozen in lock screen.
Situation 3) After the crash in situation 2, turned again the computer on.
After login, moved the mouse a bit and screen froze.
I tried to reproduce the kernel oops, but wasn't successful. So I am
attaching the kern.log of one of the kernel oops I had yesterday. I
think it will be useful.
Finally, I just like to add it's very common my wallpaper and other
preferences are gone after a crash like that, and I have to do change
them all over again.
- Thanks in advance.
+ WORKAROUND: Disable Bluetooth.
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1003624
Title:
kernel BUG at /build/buildd/linux-3.2.0/mm/slub.c:3427!; EIP is at
kfree+0x10f/0x120
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