[AG-TECH] Audio on Mac G4 Powerbook - Issues (long, xTerm log appended)

[Eric Olson]

Hi Kathy,
Please thoroughly research mailing lists before posting to them.  It makes
sense for this e-mail to go to ag-tech, but not ag-info, ag-focus, or
ag2005.  I'm only familiar with some of the other mailing lists, so I
can't speak for all of them.
Eric

On Thu, 24 Feb 2005, kathy gill wrote:

> This debugging took place in the Asia-Pacific Access Grid venue.
>
> I spent some time with Jason Bell this afternoon trying to debug RAT on
> my G4 15" Powerbook with OS 10.3.7 and iSight camera.
>
>
> The problems :
>
> 1) Instances (multiple):
> With RAT window enabled, sound is distorted by loud background noise
> that sounds something like angry bees. No sound out, even when "talk" is
> checked
>
> 2) Instance (once):
> With RAT window enabled, distorted sound -> checking "talk" turned
> incoming sound "off"
>
> 3) Instances (multiple):
> RAT would arbitrarily crash (window disappears) - this was with either
> built-in mic or iSight mic.
>
> 4) Current state:
> Now no sound in or out (except for tone-test, which works)
>
> 5) Reception Quality Matrix
> High packet loss on multicast compared to unicast.
>
>
>
> Details:
> We ran Xterm (history at the bottom of this message) to boot audio
> service -- RAT window would appear, transmit "noise", but when "talk"
> button was enabled, it would crash.
>
> [Note that today I had switched input from built-in mic to iSight mic
> based on earlier AG-Tech posting.]
>
>
> I switched input back to built in mic and launched audio service
> manually again; tone test - worked - but no sound "in". clicked "talk"
> button - no sound in or out (no flashing indicator lights)
>
> Reception quality matrix went to hell in a handbasket (up to 78% packet
> loss) ... but RAT hasn't crashed.
>
> Tried a powered mic -- RAT didn't crash but still no sound (in or out).
>
>
> Shifted to unicast - RAT launched automatically and hasn't crashed.
>
> Reception quality matrix is full of "green" boxes but cannot initiate
> conversation. No "flashing lights" when talk is enabled and I test mic.
> Occasional drop to yellow w/<10% loss -- but no more high reds. This
> suggests issues with UW multicast network, yes?
>
> I have only video. :-/
>
>
>
> Log data from RAT Crash with iSight mic enabled follows :
>
> [pid/608 +426 audio.c] catch up! read_dur(877) > cushion_size(800)
> [pid/608 +390 mix.c] Getting new cushion 880 old 800
> [pid/608 +467 audio.c] Decreasing cushion
> [pid/608 +2802 rtp.c] Deleting source 0x25a1f352 due to timeout...
> [pid/608 +204 pdb.c] Removing persistent database entry for SSRC 0x25a1f352
> [pid/607 +895 mbus.c] received reliable msg 352, sending ACK
> [pid/608 +426 audio.c] catch up! read_dur(1747) > cushion_size(800)
> [pid/608 +390 mix.c] Getting new cushion 880 old 800
> [pid/608 +467 audio.c] Decreasing cushion
> [pid/608 +625 rtp.c] Created database entry for ssrc 0x26c41e31 (8 valid
> sources)
> [pid/608 +426 audio.c] catch up! read_dur(1161) > cushion_size(800)
> [pid/608 +390 mix.c] Getting new cushion 880 old 800
> [pid/608 +467 audio.c] Decreasing cushion
> [pid/608 +625 rtp.c] Created database entry for ssrc 0x25a1f352 (9 valid
> sources)
> [pid/608 +426 audio.c] catch up! read_dur(1747) > cushion_size(800)
> [pid/608 +390 mix.c] Getting new cushion 880 old 800
> [pid/608 +467 audio.c] Decreasing cushion
> [pid/608 +895 mbus.c] received reliable msg 144, sending ACK
>     >>>>> KEG: this is where I clicked "talk" <<<<<<<
> [pid/608 +222 transmit.c] Starting to transmit...
> [pid/608 +983 auddev.c] GAIN=52
> [pid/607 +895 mbus.c] received reliable msg 377, sending ACK
> [pid/608 +198 cc_rdncy.c] coding not found
> cc_rdncy.c:276: failed assertion `layers != 0'
> [pid/606 +331 main_control.c] Caught signal SIGCHLD: 20
> [pid/606 +295 main_control.c] Sending mbus.quit() to (media:audio
> module:ui app:rat id:
> 06)...
> [pid/607 +895 mbus.c] received reliable msg 136, sending ACK
> [pid/607 +82 mbus_ui.c] Got mbus.quit() from (media:audio module:control
> app:rat id:606
> [pid/606 +306 main_control.c] ...done
> [pid/606 +295 main_control.c] Sending mbus.quit() to (media:audio
> module:engine app:rat
> session:0 id:606)...
> [pid/607 +184 main_ui.c] Waiting for tool.rat.ui.detach() from media
> engine...
> [pid/607 +216 mbus.c] remove dead entity (media:audio module:engine
> app:rat session:0 i
> :606)
> [pid/607 +193 main_ui.c] ...got it
> [pid/606 +216 mbus.c] remove dead entity (media:audio module:engine
> app:rat session:0 i
> :606)
> [pid/606 +379 mbus.c] Reliable mbus message failed!
> [pid/606 +306 main_control.c] ...done
> [pid/606 +116 process.c] Process already dead
> [pid/606 +116 process.c] Process already dead
> [pid/606 +567 main_control.c] Controller exit
> D-128-95-248-127:~/.AccessGrid/local_services/AudioService kathygill$
> [pid/607 +379 mbu
> .c] Reliable mbus message failed!
> [pid/607 +81 main_ui.c] mbus message failed (148:1)
> [pid/607 +209 main_ui.c] Waiting for mbus.quit() from controller...
> [pid/607 +218 main_ui.c] ...got it
> [pid/607 +362 net_udp.c] Dropped membership of multicast group
> [pid/607 +242 main_ui.c] User interface exit
>
>
> HISTORY
>
>     93  cd .AccessGrid
>     94  ls
>     95  cd local_services
>     96  ls
>     97  cd AudioService
>     98  ls
>     99  ./rat 233.2.178.9/17008
>    100  ps aux | grep rat
>    101  killall -9 rat
>    102  killall -9 rat-4.2.25-media
>    103  killall -9 rat-4.2.26-ui
>    104  ps aux | grep rat
>    105  ./rat 233.2.178.9/17008
>    106  history
>
>
> I have Log Data from stable, but not-functioning, RAT as well. Shout and
> I'll share...
>
>
> TIA,
>
> Kathy
>
>