Re: [linux-pm] potential pitfall? changing configuration while PCin hibernate (fwd)

From: Andrew Morton
Date: Wed May 25 2005 - 18:47:20 EST


Michal Semler <cijoml@xxxxxxxx> wrote:
>
> It is real stupid, that Linux kernel freezes when simply during hibernate I
> change Bluetooth dongle to USB mouse in my USB port.
>
> And it is not uncommon problem - I have BT dongle that starts in HID proxy
> mode and then I switch it to HCI mode. So I hibernate with BT dongle and
> after hibernate Linux only reads image from Swap and then freezes! :( Problem
> is, that It delete image from swap imeditially after reading it, so when I
> tried is simply with USB mouse (hibernate without it and plug it when
> notebook was switched off) it doesn't read it from swap ever and I lost all
> my memory :(
>
> I can do nothing with this behavior of my dongle and there is no known way how
> to switch it back to HID-proxy mode before hibernate (Marcel correct me if I
> am wrong) - CSR based dongle D-Link with Apple firmware.
>
> Windows knows it and doesn't have problem with it for 5 years! :)
>
> Laptop is all Intel based, kernel 2.6.11.5-vanilla, gcc 3.4.3, Debian testing

Can you please retest 2.6.12-rc5, see if this bug is still there?

Thanks.
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