Ubuntu
linux package

  1. Bug #812132
  2. Comment #17

Comment 17 for bug 812132

Revision history for this message
Jesse Sung (wenchien) wrote : Re: [PATCH] Bluetooth: set reset_resume handler

On 10/25/2011 04:40 PM, Oliver Neukum wrote:
> Am Dienstag, 25. Oktober 2011, 10:37:38 schrieb Jesse Sung:
>>
>> On some machines, it seems that usb hubs do not get power while
>> being suspended. We can get something like this in dmesg:
>> usb usb2: root hub lost power or was reset
>>
>> When this is the case, .reset_resume is called instead of .resume.
>> If .reset_resume is not set, bluetooth modules would stay in an unusable
>> state because the resume function is not called.
>
> Have you experimentally verified that? This state of affairs is years
> old and should result in a virtual unplug/replug cycle. What are you
> seeing?
>
> Regards
> Oliver

Hi Oliver,

Humm... You're right, there is an unplug-replug cycle, but bluetooth
doesn't work until I restart bluetoothd. If the resume function is
called through .reset_resume, then bluetooth works right after resume.

Regards,
Jesse