Hi,
I'm getting a panic when I to turn off the wireless using the Fn-F2
combination on my Asus Eee PC 701SDX. Although I'm using Ubuntu 10.10,
I've tried it using the mainline kernel (as supplied by Ubuntu for
testing bugs against mainline). So far I've reproduced consistently
against Ubuntu's 2.6.35-22-generic-pae as well as Ubuntu-supplied
mainstream 2.6.35-02063504.201008271919 and
2.6.37-020637rc1.201011020905.
There are no problems at all if I rmmod r8187se before hitting the
switch; I can turn wireless back on and r8187se autoloads and wireless
works fine.
I have also reported this to Ubuntu downstream; that report also
includes various automatic information about my system you might find
helpful: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674285
Please also see my side note in that report about r8187se causing a hang
after disconnecting AC after suspend. I don't know if that is related or
not.
I can't seem to get a crash dump. Setting /proc/sys/kernel/panic doesn't
seem to help the kernel reboot after a panic. I've taken a photo of what
I can see at http://i.imgur.com/QSXMD.jpg
Is this a problem with Eee PC ACPI or in r8187se? Which way up is the
backtrace? I think it's most-recent first at an educated guess?
What else can I do? I'm happy to hack, try patches etc. Any pointers
would be appreciated, particularly towards getting a full dump - I've
spent a while trying to find a solution but haven't got anywhere. I've
installed (Ubuntu) linux-crashdump but nothing appears in /var/crash,
presumably because I'm killing the power since I can't get it to reboot,
and there's no reset button. If you need me to compile a kernel direct
from mainstream source instead of using the Ubuntu mainstream builds I
can manage that.
Cheers,
Robie
On 11/11/2010 06:41 PM, Robie Basak wrote:
> Hi,
>
> I'm getting a panic when I to turn off the wireless using the Fn-F2
> combination on my Asus Eee PC 701SDX. Although I'm using Ubuntu 10.10,
> I've tried it using the mainline kernel (as supplied by Ubuntu for
> testing bugs against mainline). So far I've reproduced consistently
> against Ubuntu's 2.6.35-22-generic-pae as well as Ubuntu-supplied
> mainstream 2.6.35-02063504.201008271919 and
> 2.6.37-020637rc1.201011020905.
Is Fn-F2 the radio kill switch?
> There are no problems at all if I rmmod r8187se before hitting the
> switch; I can turn wireless back on and r8187se autoloads and wireless
> works fine.
>
> I have also reported this to Ubuntu downstream; that report also
> includes various automatic information about my system you might find
> helpful: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674285
>
> Please also see my side note in that report about r8187se causing a hang
> after disconnecting AC after suspend. I don't know if that is related or
> not.
>
> I can't seem to get a crash dump. Setting /proc/sys/kernel/panic doesn't
> seem to help the kernel reboot after a panic. I've taken a photo of what
> I can see at http://i.imgur.com/QSXMD.jpg
>
> Is this a problem with Eee PC ACPI or in r8187se? Which way up is the
> backtrace? I think it's most-recent first at an educated guess?
The calling sequence is up screen. Thus rtl8180_pci_remove() calls
unregister_netdev(), etc. It is really tough debugging without seeing what
routine is actually causing the panic.
> What else can I do? I'm happy to hack, try patches etc. Any pointers
> would be appreciated, particularly towards getting a full dump - I've
> spent a while trying to find a solution but haven't got anywhere. I've
> installed (Ubuntu) linux-crashdump but nothing appears in /var/crash,
> presumably because I'm killing the power since I can't get it to reboot,
> and there's no reset button. If you need me to compile a kernel direct
> from mainstream source instead of using the Ubuntu mainstream builds I
> can manage that.
At this point, I see no point in building a mainstream kernel.
Do you have another host that might be setup as a net console?
Larry
On 2010-11-12, Larry Finger <[email protected]> wrote:
> What does the following log entry signify?
>
> Nov 12 16:29:03 tiny kernel: [ 160.306731]
>=>>>>>>>>>>=============================>set power:0,0!
>
> On my system, switching to battery does not affect the rtl8187se at all.
That is consistently showing up every time I switch from AC to battery
(but not battery to AC) while wireless is on. It does not appear if I
turn the wireless off, disconnect AC and then turn wireless on again.
Also for a suspend/resume cycle, it appears only if on battery and
wireless is on.
Robie
