Subject: Re: [Bluez-devel] Suspend/resume issues with bluez
From: Paul Ionescu <paul@acorp.ro>
To: Mitsu Hadeishi <mitsu@syntheticzero.com>
Cc: bluez-devel@lists.sourceforge.net
In-Reply-To: <200403022202.19259.mitsu@syntheticzero.com>
References: <200403022202.19259.mitsu@syntheticzero.com>
Message-Id: <1078379087.17118.22.camel@t40>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Sender: bluez-devel-admin@lists.sourceforge.net
Errors-To: bluez-devel-admin@lists.sourceforge.net
Date: Thu, 04 Mar 2004 07:44:47 +0200

Hi Mitsu,

On T40* the bluetooth adapter is an USB one, so you can try to remove
all USB modules before suspend, and load them again after resume.

On Wed, 2004-03-03 at 05:02, Mitsu Hadeishi wrote:
> Hi, just thought I'd run this issue past you folks.  I'm running the bluez 
> stack and utilities from Debian unstable on kernel 2.4.22-x1 (Xandros Desktop 
> 2) on a Thinkpad T40p.  It seems to run fine when I first boot; I am able to 
> discover other devices, they can discover me.  I am a newbie trying to use 
> this protocol stack; so I haven't yet gotten any applications to work yet.  
> However, it seems to function, basically.
> 
> The problem is bluez never seems to work again after a suspend/resume.  I have 
> tried shutting down the Bluetooth card (you can do with with Fn-F5 on a 
> Thinkpad) before suspending, as well as doing hciconfig hci0 down, and even 
> rmmod rfcomm, rmmod hci_usb (rmmod l2cap never seems to work) before 
> suspending, and then modprobe them back afterwards.  Though my machine does 
> not hang or crash when coming back from suspend, the Bluetooth card never 
> works again.  hciconfig -a prints nothing.
> 
> Interestingly, before I installed the bluez stack, whenever I hit Fn-F5 it 
> would freeze my machine.  Now, it doesn't freeze it, but correctly toggles 
> the little LED saying Bluetooth is active/inactive.  When bluez is working, 
> Fn-F5 makes hciconfig -a report the device there, then Fn-F5 again will make 
> hciconfig -a report nothing.  But after a suspend/resume, Fn-F5 will *still* 
> toggle the Bluetooth LED, but hciconfig -a never shows a card.
> 
> Rebooting the system causes bluez to work again.
> 
> Mitsu


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