Re: [PATCH] Revert "Bluetooth: Update resolving list when updating whitelist"

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On Sun, 2020-10-04 at 12:51 +0200, Greg Kroah-Hartman wrote:
> On Sat, Oct 03, 2020 at 08:33:18PM +0200, Marcel Holtmann wrote:
> > Hi Greg,
> > 
> > > > > This reverts commit 0eee35bdfa3b472cc986ecc6ad76293fdcda59e2
> > > > > as it
> > > > > breaks all bluetooth connections on my machine.
> > > > > 
> > > > > Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx>
> > > > > Cc: Sathish Narsimman <sathish.narasimman@xxxxxxxxx>
> > > > > Fixes: 0eee35bdfa3b ("Bluetooth: Update resolving list when
> > > > > updating whitelist")
> > > > > Signed-off-by: Greg Kroah-Hartman
> > > > > <gregkh@xxxxxxxxxxxxxxxxxxx>
> > > > > ---
> > > > > net/bluetooth/hci_request.c | 41 ++--------------------------
> > > > > ---------
> > > > > 1 file changed, 2 insertions(+), 39 deletions(-)
> > > > > 
> > > > > This has been bugging me for since 5.9-rc1, when all
> > > > > bluetooth devices
> > > > > stopped working on my desktop system.  I finally got the time
> > > > > to do
> > > > > bisection today, and it came down to this patch.  Reverting
> > > > > it on top of
> > > > > 5.9-rc7 restored bluetooth devices and now my input devices
> > > > > properly
> > > > > work.
> > > > > 
> > > > > As it's almost 5.9-final, any chance this can be merged now
> > > > > to fix the
> > > > > issue?
> > > > 
> > > > can you be specific what breaks since our guys and I also think
> > > > the
> > > > ChromeOS guys have been testing these series of patches
> > > > heavily.
> > > 
> > > My bluetooth trackball does not connect at all.  With this
> > > reverted, it
> > > all "just works".
> > > 
> > > Same I think for a Bluetooth headset, can check that again if you
> > > really
> > > need me to, but the trackball is reliable here.
> > > 
> > > > When you run btmon does it indicate any errors?
> > > 
> > > How do I run it and where are the errors displayed?
> > 
> > you can do btmon -w trace.log and just let it run like tcdpump.
> 
> Ok, attached.
> 
> The device is not connecting, and then I open the gnome bluetooth
> dialog
> and it scans for devices in the area, but does not connect to my
> existing devices at all.
> 
> Any ideas?

Use bluetoothctl instead, the Bluetooth Settings from GNOME also run a
discovery the whole time the panel is opened, and this breaks a fair
number of poor quality adapters. This is worked-around in the most
recent version, but using bluetoothctl is a better debugging option in
all cases.

Cheers




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