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View Full Version : Wireless interference? Or problem with SB?



Biro, Stephen G.
2004-11-21, 07:21
Dan,

(don't take this the wrong way ;-) but I am so happy to know that someone
else is having the exact same issue you that I am...sb will reboot
mid-stream...but also, even if no stream is playing and I am scrolling thru
menus or rss is running..... so it isn't related to the audio side of the
sb. Also, the sb is stable when wired.

My reboots run from very frequent (once every five minutes to a couple an
hour. All I can see in my AP is the lease requests generated by the sb when
it reboots. The reboots occur when there are several other APs in the air,
and also when there are none. My laptop is the only thing on the network.
I have tried all the channels, tried wep, tried shared key, tried close to
AP, far from AP.... I thought maybe it was due to wireless signal loss, but
I also took off the antenna to block signal, and nothing. My theory is
something happens at the network layer that causes some sort of condition
that causes a call to reset. At the moment I am at a loss as to what to do
to track this down...

I have a thread in discussion@ going "sb wireless reboot", but no one had
any ideas. I emailed Dean to see if there is some way to extract a syslog
off the sb to get deeper insight -- will let you know if I hear anything
back.

I will also try the fixed IP to see if that helps.

-s-

-----Original Message-----
From: discuss-bounces (AT) lists (DOT) slimdevices.com
[mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Dan Goodinson
Sent: November 21, 2004 8:12 AM
To: Slim Devices Discussion
Subject: [slim] Wireless interference? Or problem with SB?

Thanks Mark - I'll give the SB a static IP and see what happens.

Just worked out, too, that the unknown MAC address that appears in the
router logs matches that of the router itself. I've set up a MAC filter
to only allow connection by the devices that are known to me. Is it
normal for the router to - in effect - try and connect to itself? Since
I enabled debug log messages (in addition to standard logs) I can see
that this happens very frequently; it happens in "batches" every 5 mins
or so, and then every 10 seconds for a few minutes). If it is "normal"
(and therefore safe) I'll allow this MAC address to connect to the
router too - e.g. I'll allow the router to connect to itself...

I'm using same firmware version as you (1.64). Currently using
slimserver v5.3.1, although I see that 5.4 is now available. I've seen
a few threads recently about issues with 5.4 - is it worth upgrading
yet?

Still running CH11 at the moment, while I waited fror feedback from
here... It's rebooted twice this morning: it's been in use for about 4
hours, so that makes once per couple of hours. In fact, that's not a
bad average when comparing to "normal" number of reboots.

I only have 1 SB. Going to set it up as a static IP just now and see if
it helps... Cheers for the suggestion.

Dan.

-----Original Message-----
From: discuss-bounces (AT) lists (DOT) slimdevices.com
[mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Mark Bennett
Sent: 21 November 2004 12:44
To: Slim Devices Discussion
Subject: [slim] Wireless interference? Or problem with SB?


Hi Dan,

as an extra data point, I'm also using a USR8054 Access Point (Firmware
1.64) together with a wireless squeezebox. My laptop uses the USR5410
PCMCIA card, and my wife's uses a Lucent card of some sort.

I'm running SlimServer 5.3.0 (one of the nightlies: 2004_09_23-1) but on
fast Linux box (FC2) with a single Squeezebox set to a static IP
address. The server is allocated an IP using DHCP, so it's the opposite
way round to yours.

My wireless signal strength is typically around 60%->70%, and I think I
live in a relatively clean environment from a wireless perspective. I'm
using wireless channel 11.

I have never seen the problem you're describing, although I do very
occasionally get a 1-2 second dropout in the music, maybe once every 20
hours of playback time.

Have you tried setting the SB(s) to static IP addresses as well?


On Sun, 2004-11-21 at 11:25, Dan Goodinson wrote:
> I've been trying to track this down for 2 weeks now, and am wondering
> what else I can do to identify the issue? I'm thinking even about a
> 3rd party site survey to find out if there is a lot of interference in

> this area. How can I get to the bottom of this?
>
> The problem:
>
> Problem is that intermittently the SB player reboots. It will be
> playing music, and then music stops and display goes dark. Then a
> couple of seconds later I see the splash screen, SB gets the IP
> address back again, and then it restarts the track. It's
> intermittent, but it happens at least once every 2 hours (generally as

> much as once an hour, sometimes a LOT more - e.g. 3 or 4 times per
> hour). Every time this happens, my router logs show SB request a new
> IP (it invariably gets the same IP each time).
>
> The software:
>
> I'm running slimserver 5.3.1. Slimserver is running on a Win2k
> (advanced server) sp4 box with various critical MS hotfixes applied.
> Server is more or less dedicated - there are no other apps running on
> it (except for the RAID and AV software). IIS and other related stuff

> are disabled, as is MS Auto Update. I'm running MacAfee virus Scan
> Enterprise v7, with on-access scan. No firewall installed. Server is

> 500MHZ (PIII Pentium) with 512MB RAM (Crucial branded) and 2GB swap.
> OS hard-drive is virtually empty - I have a 40GB drive, with around
> 35GB free space. My RAID1 array is for MP3s - it's currently 80GB,
> with around 35GB free.
>
> The hardware:
>
> The network consists of a USR 8054 'turbo' wireless router access
> point with most recent firmware update (as of 2 weeks ago when I first

> got SB, and had a real nightmare with reboots!). Router is 801.11g. I

> have 3 PCs, all with USR 125mbps ('g') cards all running latest
> drivers. I also have 2 laptops: 1 with a USR PCMCIA 125mbps ('g')
> card; my work laptop uses a built-in 11mbps 'b' wi-fi card. I very
> occasionally experience problems on my other network members - but
> this is very very infrequent. At worst, it is once a week - but
> generally a lot less than that (e.g. once a fortnight or less
> normally). When I say "problems" I mean that the remote client I use
> (e.g. remote desktop connection, terminal services client etc) loses
> connection with the machine it was talking to.
>
> Wireless cards all running latest drivers, with short pre-amble.
> Slimserver OS is running with no power management on the disks and
> I've disabled the VGA power-down and screensaver. I've also disabled
> BIOS power management. Server BIOS is the most recent possible
> version (motherboard is Intel SE440BX-2).
>
> My slimserver is running on a static IP. All PCs (and SB) are running

> as DHCP clients. I tried wi-fi channel 1 (that was a nightmare) and
> currently running channel 11 (better but still sometimes painful).
> Going to try channel 6 today. I enabled dynamic channel switching (to

> minimise interference) but this just switched to channel 1 at first
> sign of trouble: the switch to CH1 caused SB to reboot, plus CH1
> seemed to be far worse, judging by SB stability.
>
> No other wireless devices in the house, except the "wirefree
> doorbell". I unplugged this the other day, but there was no
> difference to SB reboot. The SB is unaffected when I press doorbell,
> so I don't reckon it is this. We DO have a microwave, but we never
> use it. We certainly haven't used it once in the 2 weeks since I've
> had the SB.
>
> The network signal:
>
> I have been monitoring the wi-fi signal using both USR utilities and
> "netstumbler". Signal strength at SB is around 80-85%. Signal
> strength at the server (where slimserver is installed) is around 65%,
> with signal quality at around 75%. No other networks detected. Signal

> strength is fairly constant (I'm running netstumbler on a laptop which

> is within 2 feet of SB, so I can get an idea of interference at that
> point). It seems that my NICs don't support "noise" measurements, so
> unable to tell the noise level in the wi-fi signal. There is no
> perceptible drop in average signal strength when I see SB reboot.
> Also, there is no perceptible jump in CPU usage or RAM usage on
> slimserver when a reboot occurs.
>
> My router logs show persistent attempts to connect to my network by an

> unknown device - it is being denied by my MAC filter. This is going
> to be generating a lot of noise, I guess, but so far none of these log

> entries coincide with a SB reboot. I currently have NO other security

> in place other than my MAC filter, although considering enabling it.
> The problem surely can't get much worse :(
>
> Any ideas on how I can further narrow this down? CH6 is the next
> step, but any advice gratefully received. The continuous SB reboots
> are driving me nuts :(
>
> Cheers!
> Dan.
>
>

Beesley, S
2004-11-21, 10:01
Dan, Stephen

I also have exactly the same reboot problems. I've had them since I bought
by SBG several months ago. Interestingly, I also have a USR AP (model 2249).

My problems were worse when I had the AP set in "Both" WEP authentication
mode (especially when booting up). Changing to Shared mode stopped by boot
up problems, but I still have the frequent / random reboots when playing
music (4-5 times an hour). This is not a signal problem. In fact, it
shouldn't matter if the signal was lost - the SBG should just report "lost
connection to the SS".

I also suspect a low level firmware / hardware / code issue that's causing
an issue.

Stuart
----- Original Message -----
From: "Biro, Stephen G." <biros (AT) stelor (DOT) com>
To: "'Slim Devices Discussion'" <discuss (AT) lists (DOT) slimdevices.com>
Sent: Sunday, November 21, 2004 2:21 PM
Subject: [slim] Wireless interference? Or problem with SB?


> Dan,
>
> (don't take this the wrong way ;-) but I am so happy to know that someone
> else is having the exact same issue you that I am...sb will reboot
> mid-stream...but also, even if no stream is playing and I am scrolling
> thru
> menus or rss is running..... so it isn't related to the audio side of the
> sb. Also, the sb is stable when wired.
>
> My reboots run from very frequent (once every five minutes to a couple an
> hour. All I can see in my AP is the lease requests generated by the sb
> when
> it reboots. The reboots occur when there are several other APs in the
> air,
> and also when there are none. My laptop is the only thing on the network.
> I have tried all the channels, tried wep, tried shared key, tried close to
> AP, far from AP.... I thought maybe it was due to wireless signal loss,
> but
> I also took off the antenna to block signal, and nothing. My theory is
> something happens at the network layer that causes some sort of condition
> that causes a call to reset. At the moment I am at a loss as to what to do
> to track this down...
>
> I have a thread in discussion@ going "sb wireless reboot", but no one had
> any ideas. I emailed Dean to see if there is some way to extract a syslog
> off the sb to get deeper insight -- will let you know if I hear anything
> back.
>
> I will also try the fixed IP to see if that helps.
>
> -s-
>
> -----Original Message-----
> From: discuss-bounces (AT) lists (DOT) slimdevices.com
> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Dan Goodinson
> Sent: November 21, 2004 8:12 AM
> To: Slim Devices Discussion
> Subject: [slim] Wireless interference? Or problem with SB?
>
> Thanks Mark - I'll give the SB a static IP and see what happens.
>
> Just worked out, too, that the unknown MAC address that appears in the
> router logs matches that of the router itself. I've set up a MAC filter
> to only allow connection by the devices that are known to me. Is it
> normal for the router to - in effect - try and connect to itself? Since
> I enabled debug log messages (in addition to standard logs) I can see
> that this happens very frequently; it happens in "batches" every 5 mins
> or so, and then every 10 seconds for a few minutes). If it is "normal"
> (and therefore safe) I'll allow this MAC address to connect to the
> router too - e.g. I'll allow the router to connect to itself...
>
> I'm using same firmware version as you (1.64). Currently using
> slimserver v5.3.1, although I see that 5.4 is now available. I've seen
> a few threads recently about issues with 5.4 - is it worth upgrading
> yet?
>
> Still running CH11 at the moment, while I waited fror feedback from
> here... It's rebooted twice this morning: it's been in use for about 4
> hours, so that makes once per couple of hours. In fact, that's not a
> bad average when comparing to "normal" number of reboots.
>
> I only have 1 SB. Going to set it up as a static IP just now and see if
> it helps... Cheers for the suggestion.
>
> Dan.
>
> -----Original Message-----
> From: discuss-bounces (AT) lists (DOT) slimdevices.com
> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Mark Bennett
> Sent: 21 November 2004 12:44
> To: Slim Devices Discussion
> Subject: [slim] Wireless interference? Or problem with SB?
>
>
> Hi Dan,
>
> as an extra data point, I'm also using a USR8054 Access Point (Firmware
> 1.64) together with a wireless squeezebox. My laptop uses the USR5410
> PCMCIA card, and my wife's uses a Lucent card of some sort.
>
> I'm running SlimServer 5.3.0 (one of the nightlies: 2004_09_23-1) but on
> fast Linux box (FC2) with a single Squeezebox set to a static IP
> address. The server is allocated an IP using DHCP, so it's the opposite
> way round to yours.
>
> My wireless signal strength is typically around 60%->70%, and I think I
> live in a relatively clean environment from a wireless perspective. I'm
> using wireless channel 11.
>
> I have never seen the problem you're describing, although I do very
> occasionally get a 1-2 second dropout in the music, maybe once every 20
> hours of playback time.
>
> Have you tried setting the SB(s) to static IP addresses as well?
>
>
> On Sun, 2004-11-21 at 11:25, Dan Goodinson wrote:
>> I've been trying to track this down for 2 weeks now, and am wondering
>> what else I can do to identify the issue? I'm thinking even about a
>> 3rd party site survey to find out if there is a lot of interference in
>
>> this area. How can I get to the bottom of this?
>>
>> The problem:
>>
>> Problem is that intermittently the SB player reboots. It will be
>> playing music, and then music stops and display goes dark. Then a
>> couple of seconds later I see the splash screen, SB gets the IP
>> address back again, and then it restarts the track. It's
>> intermittent, but it happens at least once every 2 hours (generally as
>
>> much as once an hour, sometimes a LOT more - e.g. 3 or 4 times per
>> hour). Every time this happens, my router logs show SB request a new
>> IP (it invariably gets the same IP each time).
>>
>> The software:
>>
>> I'm running slimserver 5.3.1. Slimserver is running on a Win2k
>> (advanced server) sp4 box with various critical MS hotfixes applied.
>> Server is more or less dedicated - there are no other apps running on
>> it (except for the RAID and AV software). IIS and other related stuff
>
>> are disabled, as is MS Auto Update. I'm running MacAfee virus Scan
>> Enterprise v7, with on-access scan. No firewall installed. Server is
>
>> 500MHZ (PIII Pentium) with 512MB RAM (Crucial branded) and 2GB swap.
>> OS hard-drive is virtually empty - I have a 40GB drive, with around
>> 35GB free space. My RAID1 array is for MP3s - it's currently 80GB,
>> with around 35GB free.
>>
>> The hardware:
>>
>> The network consists of a USR 8054 'turbo' wireless router access
>> point with most recent firmware update (as of 2 weeks ago when I first
>
>> got SB, and had a real nightmare with reboots!). Router is 801.11g. I
>
>> have 3 PCs, all with USR 125mbps ('g') cards all running latest
>> drivers. I also have 2 laptops: 1 with a USR PCMCIA 125mbps ('g')
>> card; my work laptop uses a built-in 11mbps 'b' wi-fi card. I very
>> occasionally experience problems on my other network members - but
>> this is very very infrequent. At worst, it is once a week - but
>> generally a lot less than that (e.g. once a fortnight or less
>> normally). When I say "problems" I mean that the remote client I use
>> (e.g. remote desktop connection, terminal services client etc) loses
>> connection with the machine it was talking to.
>>
>> Wireless cards all running latest drivers, with short pre-amble.
>> Slimserver OS is running with no power management on the disks and
>> I've disabled the VGA power-down and screensaver. I've also disabled
>> BIOS power management. Server BIOS is the most recent possible
>> version (motherboard is Intel SE440BX-2).
>>
>> My slimserver is running on a static IP. All PCs (and SB) are running
>
>> as DHCP clients. I tried wi-fi channel 1 (that was a nightmare) and
>> currently running channel 11 (better but still sometimes painful).
>> Going to try channel 6 today. I enabled dynamic channel switching (to
>
>> minimise interference) but this just switched to channel 1 at first
>> sign of trouble: the switch to CH1 caused SB to reboot, plus CH1
>> seemed to be far worse, judging by SB stability.
>>
>> No other wireless devices in the house, except the "wirefree
>> doorbell". I unplugged this the other day, but there was no
>> difference to SB reboot. The SB is unaffected when I press doorbell,
>> so I don't reckon it is this. We DO have a microwave, but we never
>> use it. We certainly haven't used it once in the 2 weeks since I've
>> had the SB.
>>
>> The network signal:
>>
>> I have been monitoring the wi-fi signal using both USR utilities and
>> "netstumbler". Signal strength at SB is around 80-85%. Signal
>> strength at the server (where slimserver is installed) is around 65%,
>> with signal quality at around 75%. No other networks detected. Signal
>
>> strength is fairly constant (I'm running netstumbler on a laptop which
>
>> is within 2 feet of SB, so I can get an idea of interference at that
>> point). It seems that my NICs don't support "noise" measurements, so
>> unable to tell the noise level in the wi-fi signal. There is no
>> perceptible drop in average signal strength when I see SB reboot.
>> Also, there is no perceptible jump in CPU usage or RAM usage on
>> slimserver when a reboot occurs.
>>
>> My router logs show persistent attempts to connect to my network by an
>
>> unknown device - it is being denied by my MAC filter. This is going
>> to be generating a lot of noise, I guess, but so far none of these log
>
>> entries coincide with a SB reboot. I currently have NO other security
>
>> in place other than my MAC filter, although considering enabling it.
>> The problem surely can't get much worse :(
>>
>> Any ideas on how I can further narrow this down? CH6 is the next
>> step, but any advice gratefully received. The continuous SB reboots
>> are driving me nuts :(
>>
>> Cheers!
>> Dan.
>>
>>