Buzzing sound

Joerg Reisenweber joerg at
Tue Aug 5 11:55:58 CEST 2008

Am Di  5. August 2008 schrieb Sebastien Nanchen:
> Hello,
> I played with my Freerunner for some days now. I am part of the users who
> have the "buzzing sound" problem. I modified the sound configuration as 
> in the wiki and was able to eradicate the echo (caller-side) and to make the 
> voice volume (called-side) acceptable.

Fine! :-)

> But the buzzing sound stays and make the FR 
> unusable as a phone (I tried both OM 2007.2 and the latest image of Qtopia).

The "GSM-buzz-noise" issue isn't related to image used. At least that's what 
we think of it at the moment. It's a hw-issue. (Please note we fixed other 
hw-issues by sw-patch - compare sd-card/GPS). Anyway there's no *bug* in any 
of the sw-stacks/images that causes this issue, so changing image won't help, 
until we eventually might find a sw-fix for the hw-issue.

> I know this was much discussed in the ML, and I'm sorry to come with this 
topic again,
> but I haven't found any answer yet. 

There isn't any yet. My regret :.(

> I would know if y missed some important information 
> about a tweak solving this issue?

Only thing you may try for now is changing GSM-provider, as it seems to be 
very clear the issue is to be found on some GSM-networks, and not (or less) 
on some others. Generally the 1800/1900 networks seem to be more likely to 
cause this problem than the 850/900 networks. For Germany I got reports f 
noise only for E+ network (and resellers)

> If not, does somebody have an idea about how many users are experiencing the 
> problem (10%, 30%, more?)

Hard to tell. We don't get sufficient number of reports, and due to nature of 
reports nearly all are problem-reports, people without problems usually don't 
post a report.

> Is there any hope we can use our freed phone as a phone in a foreseeable 

See above...
Investigation on issue continues.

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