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#rockbox log for 2014-04-23

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01:29:38KlarionCan someone help me? I want to be able to listen to sounds like in SineGen(which generates sounds on different frequencies) on my Rockbox so I can equalize my headphones properly. How do I get these sounds? Is this even possible? Can I download/generate them somehow. It can be for example 1k, 2k, 3k... up to 20k.
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01:37:30dfkt_Klarion, you can't generate tones in rockbox, but you can easily do it in eg. audacity
01:38:17Klarionok, I'm in audacity now, can you pls tell me what do I put in amplitude setting? Default is 0.8. Is that OK?
01:38:43dfkt_as long as it doesn't distort anything is fine
01:39:04Klarionok
01:39:22Klarionwaveform should be sine, right?
01:40:17dfkt_maybe best you generate a sine-sweep from 20hz to 20khz, so you get a rough estimate where the peaks and valleys of your phone are
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01:41:03Klarionthat's what I'm planning to do. I have to generate frequencies one-by-one. 50hz, 500hz, 1k etc. ?
01:41:52dfkt_hmm, i guess audacity can't generate sweeps
01:42:09dfkt_just google for sine sweep, and you should get some results
01:42:18dfkt_it's one test tone that spans the whole audible spectrum
01:42:57KlarionI think I will do it like this first because I already practiced it on SineGen app. on my PC
01:43:16Klarioncan you just tell me this: I have an option here in audacity when I want to generate a tone, it says, pick one: sine, square, sawtooth? Which do I pick?
01:43:36dfkt_sine. it's just one frequency at once, with no overtones
01:43:41Klarionok
01:44:06dfkt_but personally, i just listen to music in fb2k with a vst eq plugin, and tweak my phones to my liking there
01:44:17dfkt_then i take these settings and use them im rockbox
01:44:28dfkt_much easier than trial & error with the rockbox eq itself
01:44:57Klarionyeah, but I figured that my PC might have a different frequency graph then my MP3 player
01:44:59dfkt_and test tones never gave me really enjoyable results
01:45:17Klarionif you understand what I mean...
01:46:00Klarionso some tones might be different on PC than on player
01:46:01dfkt_the frequency response of average pc sound cards and of most mp3 players should be fairly flat with most phones, there shouldn't be any huge differences in frequency response
01:47:16***Saving seen data "./dancer.seen"
01:47:32dfkt_and that's basically the only thing that matters for EQing
01:47:40Klarionmy sound card has totally rolled off bass, and my player is very flat
01:48:53Klarionand I have dual BA headphones which again are a bit problematic on some devices
01:49:45dfkt_yeah, that can be an issue on crappy outputs
01:49:59dfkt_what rockboxed player are you using?
01:50:05Klarionfuze v2
01:50:34dfkt_good, that one's flat with any impedance and crossover
01:50:54Klarionyeah, the measurements are same as clip+
01:52:44dfkt_here's a sine sweep i made - http://www10.zippyshare.com/v/17786075/file.html
01:53:11dfkt_might be a good place to start
01:53:15Klarionoh, thanks, where did you make it?
01:53:21dfkt_wavelab
01:53:47Klariondo my tones also have to be in .wav or can they be in any lossless format?
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01:54:05dfkt_can be flac or anything as well
01:54:18Klarionok
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03:47:17***Saving seen data "./dancer.seen"
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04:46:16[Saint]That seems odd...
04:46:53[Saint]I want to equalize my headphones, blah blah, yadda yadda, what's a sine wave?
04:51:37nrgi have the video for you
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04:52:17nrghttp://m.youtube.com/watch?v=b0JIFSVDYwY
04:54:00[Saint]Many hours of pure pink noise:
04:54:01[Saint]http://www.pinkspage.com/us/home
05:00
05:10:05nrgnice
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05:43:07Klarionwhat's odd?
05:43:21KlarionI equalized them, took me only 3 hours
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09:34:56NMJerrydoes ne1 know if there will ever be a rockbox port for the zoon
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09:47:22***Saving seen data "./dancer.seen"
09:49:50[Saint]Bah. What type of user is that. Can't even stay around for a minute to be told no or be mocked about typos.
10:00
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10:27:14kugeljhMikeS: ping
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10:45:57copperA head-fier talking about the USB ID build for the Classic: "Works great but when i connect to my car stereo the ipod enters 'Panic Mode' and im forced to reboot it."
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11:19:06[Saint]Easy response.
11:20:02[Saint]"you're using an unofficial build, for an unstable device"
11:20:36copperwell, I directed him to the normal build hosted on rockbox.org
11:27:45copperI've updated my post to link to the official build permanently
11:42:28wodzDo I understand correctly that ipod doesn't crash when using ipod's VID:PID ?
11:42:53[Saint]That was the assumption I made.
11:43:31copperthat's what I asked, I'm waiting for an answer
11:43:31wodzpretty interesting
11:44:02copperlet's not assume that just yet
11:44:11wodzIt is not that unexpected that ipod and generic MSC device are treated differently by head unit
11:44:36wodzwhich doesn't mean rb as MSC should crash
11:44:54[Saint]right.
11:47:26***Saving seen data "./dancer.seen"
11:48:12wodzeasy, ask the guy to come to Warsaw during DevCon by car so pamaury will have oportunity to hook usb analyser between the head and ipod :-)
11:49:00jhMikeSkugel: yessir?
11:52:40kugeljhMikeS: did you plan to upstream the rwlock stuff?
11:53:19jhMikeSI could any time I suppose.
11:53:36jhMikeSIt's not been actually run yet or anything.
11:53:56jhMikeSreworking filesystem code == need that anyway
11:55:00jhMikeSfucking dircache has its tentacles in everything in unsavory ways
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11:57:03kugelI'm more concerned with the playlist code
11:58:07kugelwe talked about extras of your locks that don't map trivially to pthread
11:58:19kugeldid that include rdlock->wrlock promotion?
11:58:44jhMikeSI didn't see any great issue with writer recurse since only one writer can recurse anyway
11:58:46kugelI think you cannot do that atomically
11:58:51kugel(with pthreads)
11:59:44jhMikeSrdlock->wrlock promotion isn't done with what I did either, it's almost nonsense
12:00
12:00:10kugelgodo
12:00:27kugelwell, you do it the other way around so I figured I better ask
12:00:49jhMikeSthere is a way to do it but basically the app has to by wrapping the read exit and write acquire in a mutex
12:02:09jhMikeSwell, heck I'll just put a patch up with a simpler version that should work with current trunk
12:05:11kugelcool
12:05:12jhMikeSjhmikes.cleansoap.org/kernel-mrsw-lock.patch">http://jhmikes.cleansoap.org/kernel-mrsw-lock.patch
12:05:54kugelthe rd->wr promotion doesn't simply work with a mutex, any waiting writer has to hold that mutex
12:06:55kugel(obviously this deadlocks)
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12:07:37jhMikeSwell it goes like: lock mtx->release rd->acquire wr->unlock mtx then you're in the writer lock
12:08:18kugelyes, but what there are other writers waiting?
12:09:32kugelif they don't hold mtx then the operation isnt atomic. if they hold the mtx it'll deadlock
12:09:40jhMikeSwhy?
12:09:53jhMikeSthe mutex is only around the switchover code
12:10:40kugelyou need to prevent other writers from getting the wrlock between the rd->wr promotion
12:11:13kugelhow do you do that? if they hold the mutex as you suggest then the system deadlocks once the reader tries to lock it
12:11:32jhMikeSothers wanting write have to get mtx, get write acces and realease the mtx
12:11:48jhMikeSreader doesn't lock it
12:12:00kugelreader locks it before "release rd"
12:12:13jhMikeSyep
12:13:35kugelif there is another writer (who waits for all readers to release), who has the mutex, it'll lock up because the reader will block on the wanna-be-writer to release the mutex and the wanna-be-writer blocks on the reader to release the rdlock
12:16:19jhMikeSonly the reader that wants to write would block there
12:16:37jhMikeSanyone wanting writer would also wait for the mtx
12:17:12kugelthe reader that wants to write would block?
12:18:20kugelhow's that atomic then?
12:19:00kugelplus, "wanting writer would also wait for the mtx" == deadlock when the reader attempts to lock the same mutex
12:20:37jhMikeSone secc...
12:23:04jhMikeShttp://pastebin.com/WT2fZyju
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12:24:48kugeljhMikeS: right, I understand that part. I think you're missing the point. how does aquiring the wrlock look like (say, in another function)?
12:24:49jhMikeSthere won't be a writer gap. readers aren't affected because they pass through anyway
12:25:38kugel(remember that in pthreads a waiting writer can race into the rd->wr transition)
12:28:15jhMikeSwhere do they race? what conditions are ok for the application in question?
12:29:49kugelthr1:release rd; thr2:aquire wr; thr1:aquire wr [block]
12:30:57jhMikeSyou mean one that acquires the wr from the beginning?
12:32:34kugelthr2 blocks on thr1 at first yes
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12:32:46kugel(but that isnt even necessary)
12:34:13jhMikeShttp://pastebin.com/56w5dz07
12:35:06kugeljhMikeS: yes. don't you see the deadlock?
12:35:10jhMikeSno
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12:35:43jhMikeS....looking hard for it
12:36:22jhMikeSA writer needn't get the mutex to release write exclusion, so the next write in the mutex is let go
12:37:10jhMikeSoh shit wait
12:37:33kugelhttp://pastebin.com/9w6V2AkH
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12:40:18jhMikeSyep...that one got by me for a little bit
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12:42:39moo_I have an iPod classic 7th generation, would a rockbox build for the 6th generation work on it? http://forums.appleinsider.com/products/apple-ipod-classic-160gb-black-mc297ll-a-7th-generation
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12:43:08jhMikeSkugel: indeed...reader can't release, now....how to correct the issue?
12:43:08[Saint]moo_: yes.
12:43:33coppermoo_: http://build.rockbox.org/data/rockbox-ipod6g.zip
12:43:42moo_thanks [Saint] copper
12:44:03kugeljhMikeS: dont attempt to do it atomically :)
12:44:28kugelthat is, don't support rw->wr lock promotion in the api
12:45:25kugelthat's why I asked if you're planning on that
12:45:31jhMikeSI'll try...there must be a way
12:45:38 Quit copper (Quit: ZNC - http://znc.in)
12:46:32kugeljhMikeS: I'm not sure it's even possible. See http://bitflipgames.com/2011/05/20/multithreaded-programming-part-2-5-mrsw-lock-code/
12:47:01 Join copper [0] (~copper@unaffiliated/copper)
12:47:05jhMikeSno, but I would like to correct that issue with the whole thing since I actually need it.
12:47:58kugelI suggest keeping it simple and don't do any lock promition
12:48:19jhMikeSI had an implementation like that then decided kernel native was better on target
12:48:25kugelinstead having the client code deal with it explicitely
12:48:47jhMikeSthat's what I wanted since it's not very common
12:49:05 Quit DormantBrain (Ping timeout: 245 seconds)
12:50:54jhMikeSI do actually need code with lock promotion though (client-side is fine)...so...this needs some rethinking
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12:52:13moo_is this page broken or is it just me? http://www.rockbox.org/wiki/FeatureComparison
12:52:46moo_Foswiki detected an internal error - please check your Foswiki logs and webserver logs for more information.
12:55:15Zagormoo_: broken. I'll take a look.
12:55:23moo_thanks
13:00
13:05:44[Saint]I'm not even sure that page would list the Classic.
13:28:19jhMikeSkugel: I think i got it
13:30:25jhMikeSbah
13:30:32pamaurycopper: I just received a micro sd extension card, so I should be able to sniff the traffic between rockbox and your microsd, I hope to be able to capture the "bug" on wire
13:31:30[Saint]nice.
13:31:32Zagormoo_: fixed
13:32:15[Saint]r105 - 13 Nov 2011
13:32:16[Saint]heh
13:32:37Zagoryeah. "This document is historical and mostly out of date!"
13:33:14copperpamaury: a micro sd "extension" card?
13:33:16copperwhat's that?
13:33:39pamaurycopper: this https://www.sparkfun.com/products/9419
13:33:43[Saint]presumably for his fancy logic analyzer.
13:33:54copperooh, nice
13:34:36copperI'll be very interested in what you'll be able to find out
13:35:17copperI wanna know if it's just a Rockbox bug or if those cards are indeed not to be trusted
13:35:53copperRockbox bug or incomplete implementation
13:35:58[Saint]I have seen similar breakout PCBs that offer uSD RAID.
13:36:06[Saint]Now, why you'd want that...who knows.
13:36:07coppervs. "the card's firmware is screwy"
13:36:09[Saint]But they exist.
13:36:17moo_[Saint]: where could I see some docs specifically for the ipod classic? most of the device-related pages don't have it listed
13:36:33coppermoo_: use the iPod Video manual
13:36:40copperhttp://download.rockbox.org/daily/manual/rockbox-ipodvideo/rockbox-build.html
13:36:43[Saint]moo_: that's likely due to it being an unstable target.
13:36:44moo_ok, thanks
13:37:15[Saint]But, copper is right - there's nothing in that manual that will be incorrect.
13:37:19[Saint]Only missing features.
13:37:27moo_does any of you guys have it running?
13:37:37[Saint]No FM, recording, and various other trivial things.
13:37:46[Saint]I do.
13:37:49[Saint]copper does.
13:37:52moo_I can live without those
13:37:55moo_:)
13:38:05*copper does
13:38:55moo_is there anything that can go wrong if I try the automated installer?
13:38:56[Saint]The caveats are: No specific maintainer anymore, and no official installation method.
13:39:07copperthere is none
13:39:08[Saint]There is no automated installer.
13:39:12coppernot for emcore anyway
13:39:21[Saint]Installation for this target is completely unsupported bu Rockbox.
13:39:24copperonce emcore is installed, you can use the Rockbox Utility
13:39:26moo_ok, I'll just follow the docs
13:39:26[Saint]*by
13:39:34[Saint]We can update a running install, but that's it.
13:39:38copperhttp://www.freemyipod.org/wiki/EmCORE_Installation/iPodClassic
13:40:36coppermoo_: I don't remember for sure, but installing emcore might reformat your iPod's HDD and wipe out all your data on it, so make sure that you have a backup of that data
13:41:03[Saint]If it's going to, it will warn you clearly.
13:41:15moo_I have it, no worries
13:41:29[Saint]ANother thing to note is - no dual boot.
13:41:32moo_it will just be annoying if I have to copy it once again...
13:41:41[Saint]you can kiss the original firmware and itunes goodbye.
13:41:57moo_yes, no problem, I kind of hate it anyway
13:42:00copperit's well worth it though
13:42:04moo_it's a PITA on Linux
13:42:24copperah, you're running Linux, that will make installing emcore easier
13:42:28[Saint]iTunes on Linux - why...dear God why...
13:42:51[Saint]Doesn't pretty much evrything use libgpod now?
13:43:22[Saint](which will shortly be irrelevant, but hey)
13:43:24moo_I used rhythmbox but it crashes all the time while copying stuff
13:43:30[Saint]Ah.
13:44:40[Saint]Head over to #freemyipod-support if you hit a snag with emCORE installation.
13:45:04[Saint]While not immediately obvious, freemyipod and Rockbox are separate entities.
13:47:29***Saving seen data "./dancer.seen"
13:48:30moo_I understand, emcore is just a bootloader
13:49:09copperslightly more than that, but as far as Rockbox is concerned, pretty much, yeah
13:50:44 Quit kuldeepdhaka (Ping timeout: 265 seconds)
13:51:39[Saint]Its technically an operating system in itself.
13:51:54[Saint]Ridiculously powerful for what most users actually need it for.
13:52:01[Saint]Hilariously so.
13:55:00copperbeing able to format the HDD from emcore is nice
13:55:13copperand if user472259 implements his USB driver, that will be even nicer
13:55:36copperer
13:55:40copperuser890104
13:56:06coppernot the best nick to autocomplete to :P
13:57:35user890104it's not mine, it's TheSeven's
13:57:49user890104but I started writing an app that uses it
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14:03:19moo_emcore is installed, now running the rockbox utility
14:05:04 Quit mc2739 (Ping timeout: 252 seconds)
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14:10:27moo_I think I did a mistake by selecting all the themes, it takes a lot of time to download them all :(
14:11:11moo_as a suggestion, there should be a way to rate them so people would download the best maintained and feature complete ones
14:11:50moo_but having the choice feels awesome :)
14:12:22[Saint]A large percentage of those may or may not be hilariously broken.
14:12:26coppermoo_: ratings are shown on the theme site
14:12:32copperhttp://themes.rockbox.org/index.php?target=ipod6g
14:12:47moo_good to know, thanks
14:13:46copperbut they won't tell you what you want to know (best maintained and feature complete)
14:17:38jhMikeSkugel: oh I got the dumb sometimes but it really stupid simple...just forget promoting and put a mutex in the reader section :P
14:18:44kugel"forget promoting" sounds reasonable :p
14:20:24moo_yay, rockbox is running, thanks guys
14:20:29jhMikeSwell, it behaves the same as if it got promoted
14:22:06coppermoo_: glad it went smoothly for you :)
14:22:43moo_just had to follow the emcore wiki page, maybe it should be made more clear that's the way to install it on the classic
14:23:56moo_I will try to use something like photorec to recover the data I had on it
14:26:02jhMikeSkugel: and the whole deal seems rather app dependent
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14:41:20moo_copper: can you tell how does rockbox battery life compare with the apple firmware's?
14:42:11copper25-32 hours of continuous playback depending on the battery's age and codecs used
14:42:40copperactually I think codecs are mostly irrelevant on the Classic, wrt battery life
14:44:02moo_apple claims it can do up to 36h, but 25-32 is not bad at all
14:44:06coppermax I ever got was 32 hours, but lately it's more like 25 hours on my Classic, but I couldn't say if that's because my battery is getting old, or if it's something else
14:44:58moo_I think it all depends how much they make use of the spinning disk drive
14:45:36coppereven with ~440 kbps files I got 32 hours
14:45:48copperand with ~210 kbps files I got similar results
14:47:10copperif you want to make use of the large storage with high bitrate files, I'd say go for it and don't worry too much about battery life
14:47:27moo_I won't :)
14:48:07moo_it's actually my wife's device... I installed rockbox without her knowledge, hopefully I won't get killed :)
14:48:38copperlol
14:48:51moo_the biggest reason was that I hated the sync experience on Linux
14:49:41moo_so all the other rockbox features are just a nice bonus
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15:00:37 Quit cmhobbs_ (Ping timeout: 252 seconds)
15:10:27 Quit wodz (Ping timeout: 264 seconds)
15:11:21[Saint]If she liked the UI- you're probably a dead man.
15:11:50[Saint]There's all sorts of ways for users to get themselves into trouble in Rockbox with settings they don't understand.
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15:25:01copperSomeone's not gonna get any tonight…
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15:27:39[Saint]Yeah, I can't imagine this ending well.
15:28:04[Saint]"But, its *better*...I swear!"
15:28:47[Saint]"Where's my playlists?" <pokerface>
15:34:44coppermoo_: get your own iPod!
15:35:57[Saint]I just got a black 160GB Classic w/ a click of death for $10
15:36:05[Saint]Hello old SSD.
15:37:08[Saint]I'm watching another auction currently at $28 for a 160GB in silver.
15:37:43[Saint]I figure its about time I started snappig some up to stash away for the future.
15:42:48copperyeah, I'm always worried Apple will discontinue it
15:43:37copperthough it's interesting they updated the firmware a year ago
15:44:18[Saint]Only to cope with an irrelevant (to us) HW modification, IIUC.
15:44:56gevaertsThat's even more interesting :)
15:45:12gevaertsI mean, they updated the hardware
15:47:33***Saving seen data "./dancer.seen"
15:49:12copperuh?
15:49:23copperno, it was an option to lift the EU volume cap
15:49:55gevaerts"an irrelevant HW modification" implies modifying the hardware, doesn't it?
15:51:17[Saint]copper: Oh - I thought you were talking about the weird bunch that won't roll back to prior versions, which IIRC was speculated to be regarding some HW change.
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16:01:59moo_I launched the doom game and rockbox hanged, how can I reboot it?
16:03:23nrglong hold power
16:04:09gevaertsnrg: on an ipod?
16:04:22nrgno
16:04:37nrgmiddle button and top of wheel then
16:04:38moo_there's no power button
16:05:00moo_thanks, that worked
16:05:08nrgawesome :)
16:08:14moo_how long does it take to reboot? it's stuck at the boot splashscreen
16:14:11[Saint]nrg: moo_: *never* use hard reset like a power down if you can avoid it (which is almost always unless the device is in a *panic*.
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16:14:53[Saint]nrg: long play is what you're looking for in such a situation.
16:15:07nrgoooo ok
16:15:11[Saint]try hard reset *only* if long play won;t do it (which is incredibly unlikely)
16:15:18nrgis that like a soft reset?
16:15:26moo_good to know, thanks
16:15:32[Saint]Its actually physically powerig down. Safely.
16:15:50nrgty
16:15:50moo_I recovered it by deleting the rockbox database and configuration from the emcore tools
16:15:55[Saint]The hard reset method is the equivalent of pulling the plug.
16:16:26nrgthe fun way
16:16:37[Saint]long power is governed by hardware, so it should work in most cases.
16:16:55[Saint]but there are times I have seen it completely unresponsive.
16:17:03[Saint]*long play, rather
16:20:16[Saint]nrg: out of curiosity - how on earth have you been shutting down?
16:20:22[Saint]Just waiting for idle timeout?
16:20:55nrglol, well i havent used an ipod in years
16:20:56[Saint]The above makes it seem to me as though long play was a very recent discovery for you.
16:21:04[Saint]Ah, I see.
16:21:19nrgwhen i long hold power on my clip zip it tells me its shutting down
16:21:24nrgso i do that
16:22:06[Saint]unfortunately keymapping and hw-specific power functions don't translate between devices.
16:22:10nrgusually i have it on an hour idle timeout for shutting down too
16:23:23nrgyea i cant recall ever longplaying on a device
16:23:36nrgdid that work for 4th gen ipods?
16:23:45 Quit moo_ (Quit: Page closed)
16:28:54[Saint]Yep.
16:29:23[Saint]Every iPod, I believe.
16:29:59[Saint]iTunes FW will just hibernate on long play, but Rockbox will actually power down.
16:30:17[Saint](which is why iPods seem to boot so fast using the OF)
16:30:57pamaurycopper: can you recall me if your bug also triggered with the cabbie theme ?
16:32:49copperyes
16:32:53copperit did
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16:45:05pamaurycopper: I don't manage to reproduce it again :( Your procedure is to select a random album in the DB ?
16:46:18copperyes, select a track, enable soft hold, wait for playback to stop within 90 seconds
16:46:25copperif it doesn't happen, I select another track
16:46:39copperif it doesn't happen after 3-4 tracks like that, I reboot the Fuze+
16:46:41copperand try again
16:48:52copperpamaury: at the time I ended up wondering if it was a faulty contact with the card, maybe by touching it ever so slightly while manipulating the Fuze+
16:49:09copperbut then I made sure to never touch the card, and I still ran into the bug
17:00
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17:47:35***Saving seen data "./dancer.seen"
17:50:52amayercopper: my drive must have been very fragmented because it is night and day how much faster it is now that I formated and put all my audio back
18:00
18:00:48coppereh
18:01:02copperdo you constantly add and delete stuff?
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18:09:26amayeryes. podcasts on a daily basis
18:11:21copperah
18:11:37copperI never delete stuff, and every once in a while I add a whole album
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18:16:32copperI wonder if iTunes does anything fancy while transfering files, to avoid fragmentation
18:28:35amayerif you are using the apple format for your ipod it probably does. but you cant use that with a windows computer
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18:36:18copperhow come?
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19:12:28gevaertscopper: hfs+ is supposed to be a bit more advanced than fat
19:12:30gevaertsI think
19:18:55pamaurycopper: I just noticed something super weird, I modified rockbox to do a random read test and stop when it encounters an error
19:19:13pamauryand strangely, most errors happen when I touch some key, especially the touchpad
19:19:36pamaurybut it does not always "kill" the microsd
19:23:42copperbut it does sometimes?
19:24:05pamauryIt happened once so far
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19:24:30pamauryI'm trying to get something more reliable
19:25:19copperwell this is encouraging
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19:27:59pamauryapparently the card is quite unreliable since I get many recoverable errors, so the sdmmc code should probably automatically retries read
19:30:18pamaurybut yeah this is encouraging since at least I can repeat the error very easily it seems
19:31:13copperfaulty card?
19:31:16copperit's brand new
19:31:27copper:-/
19:31:41copperor do you think that's just the way that model is?
19:32:08coppereh, that's probably a premature question
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19:33:00pamauryalso now that I have remove and reinserted the card I get no errors :-/
19:35:15pamauryok fun fact: if I reboot and run the test, I get faults, if I remove and reinserted, no errors, and if I reboot same cycle
19:36:16copperyou remove the card while Rockbox is running?
19:37:09pamauryyes
19:37:37pamauryand if I remove it a second or third time, also no errors
19:37:42copper:-O
19:38:19copperI thought, doing that would make puppies cry, or something
19:39:15pamaurynot if nothing is read/writing to it
19:39:31pamauryrockbox does do aggressive write caching so all writes are nearly immediate
19:39:41pamaurythe FS will usually stay consistent
19:40:56pamauryalso plugging USB seems to have an effect
19:41:01pamauryso it might be a power issue
19:42:19copperthat's something I can picture
19:47:38***Saving seen data "./dancer.seen"
20:00
20:11:56pamaurycopper: good news, I have a reliable way to reproduce it now
20:12:09pamauryit triggers within seconds
20:13:59copperhw?
20:14:01copperhow?
20:15:34pamauryjust random reads + retry, and disabling dircache
20:15:51 Quit fs-bluebot (Ping timeout: 264 seconds)
20:16:55pamauryalso, I'm triggering it on *my* fuze+ with your card
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20:19:22pamauryneither the speed nor the amount of data transferred seem to matter
20:35:33copperI don't understand why it didn't happen before
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21:25:47kugeldid we settle on the devcon date now?
21:25:54kugelis everyone fine with with?
21:26:08kugel(except those that put a cross for that date of course)
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22:01:02pamaurykugel: I'm good
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22:54:20pamaurycopper: I just discovered something strange, all the failing read actually request for....0 sectors ! It's clearly a bug in my code but the question now is whether this is this bug which you triggered or another one
23:00
23:02:23 Quit Scall (Ping timeout: 240 seconds)
23:13:01wodzpamaury: but why other cards don't trigger this?
23:15:05 Quit ender` (Quit: If it wasn't for C, we'd be writing programs in BASI, PASAL, and OBOL.-- A Programmer (@1Pr0grammer))
23:18:59pamaurywodz: my guess is the following, when called with count=0, it will actuall ask the card count-1 sectors in some occasion
23:19:38pamauryfor microSD cards, this amount is probably invalid but not on microSDXC ?
23:20:04pamaurybut still I agree it's strange
23:20:38pamauryon the other hand i'm not even sure this is the actual bug, and it must be quite rare for the upper layer to call storage read with size 0
23:20:41pamaury(if possible)
23:22:04wodzactually calling with size 0 looks like a bug (although driver should handle this gracefully)
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23:46:10fs-bluebotBuild Server message: 3New build round started. Revision 25ecbc5, 253 builds, 29 clients.
23:46:43pamauryI'm still uncertain this is the actual bug, iirc the one time I managed to capture it, the read size was nonzero
23:47:42***Saving seen data "./dancer.seen"
23:52:18fs-bluebotBuild Server message: 3Build round completed after 368 seconds.

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