the sx20 porting thread - page 101 - General Discussion and Assistance - CHDK Forum

the sx20 porting thread

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Offline ultimA

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Re: the sx20 porting thread
« Reply #1000 on: 14 / December / 2010, 10:20:53 »
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Hello t50!

Are you sure you're giving the camera enough time to re-charge the flash? That can take a couple of seconds. Just half-press and hold the shutter button, and wait until the "flash charging" icon that is blinking disappears.

Re: the sx20 porting thread
« Reply #1001 on: 14 / December / 2010, 19:32:11 »
I guys... i just install 102d version of autobuild server... I noticed that camera get turned off sometimes...

It turns off too when chdk is initializing and I half-press the shutter button...

Is somebody having the same problems?

thanks a lot

I have noticed this little glitch as well using .1001 version....not always..once in a while....but annoying.

Hope someone can help :)

just to clarify the little issue...its when I power on the camera with the power button.   Whether I press the button to go to playback or hold it to go to shoot mode, sometimes the camera will not properly initialize...the chdk screen will not show and the camera turns off after half a second.

still does it occasionally using .1004 now.
sx20is 1.02d

Re: the sx20 porting thread
« Reply #1002 on: 16 / December / 2010, 00:19:59 »
Also, has anyone been able to determine why the picture is upside down when taken clockwise 90 degrees?   it is normal when taken counterclockwise 90 degress.

Thanks!
sx20is 1.02d

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Offline SkyWalker9

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  • SX20 IS (fw 1.02b)
Re: the sx20 porting thread
« Reply #1003 on: 16 / December / 2010, 09:42:03 »
Also, has anyone been able to determine why the picture is upside down when taken clockwise 90 degrees?   it is normal when taken counterclockwise 90 degress.
I remembered that earlier this year @DandyOne also asked about this - here is a link to the discussion back then http://chdk.setepontos.com/index.php?topic=4348.msg51484#msg51484


Re: the sx20 porting thread
« Reply #1004 on: 16 / December / 2010, 18:29:46 »
Also, has anyone been able to determine why the picture is upside down when taken clockwise 90 degrees?   it is normal when taken counterclockwise 90 degress.
I remembered that earlier this year @DandyOne also asked about this - here is a link to the discussion back then http://chdk.setepontos.com/index.php?topic=4348.msg51484#msg51484

I guess i should ask then if anyone was working on correcting how the exif data for the pictures is written so that the pictures are oriented properly.
sx20is 1.02d

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Offline ultimA

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Re: the sx20 porting thread
« Reply #1005 on: 22 / December / 2010, 22:13:28 »
Hi bdasmith!
In the past two days I have seen similar random shutdowns on my camera (1.02d) too, though it happens randomly during initialization and does not depend on pressing a button. This was surprising to me, as I have never ever seen this happening before. So I was thinking about what has/could have changed. One of the possibilities that popped into my mind was cold. In these days I have been using my camera mainly outside and it is freezing and snowing here. So after making up this theory, I did notice that the crashes do not occure after staying inside a building for a longer period of time. Can you remember/confirm where you were using your camera when the crashes happened? Was it outside and was it cold there? Though it would still be strange, since without CHDK there are absolutely no crashes.

The problem about the orientation metadata has been discussed and confirmed before, even on the german forum and by myself too. It sure is annoying, but not annoying enough for me to put it into a visible place on my priority list. Sry. Has anybody seen these symptoms on another camera with the orientation sensor?

Re: the sx20 porting thread
« Reply #1006 on: 22 / December / 2010, 23:54:25 »
Thanks Ultima,

I haven't used my camera outdoors yet this winter, to busy with work unfortunately.

all the crashes on startup are while i am indoors.  also, did not happen prior to version .1001

all the 900 range versions started up just fine.

edit:  also just noticed version .1005...will reformat and give it a try and get back to you :)
« Last Edit: 22 / December / 2010, 23:56:20 by bdasmith »
sx20is 1.02d

Re: the sx20 porting thread
« Reply #1007 on: 24 / December / 2010, 17:46:46 »
Hi Ultima

getting crashes indoor when turning on the camera...
the lens barrel extends and the screen come on, but then the camera turns off.

I reformatted my card and reinstalled chdk to make sure it was correct

using an 8GB class 6 card with 2mb partition boot and the rest fat32 for chdk files and storage.

edge overlay and zebra not enabled.

and like you mentioned, no initialization problems without CHDK.

Thanks for all your work.  It is wonderful.
« Last Edit: 24 / December / 2010, 18:44:53 by bdasmith »
sx20is 1.02d


Re: the sx20 porting thread
« Reply #1008 on: 25 / December / 2010, 16:15:52 »
I solved it...

i made two 4gb partitions instead of the smalll boot/storage combo

no more crashes when turning on the camera

seems it often had a problem trying to open chdk on the large partition, and now that the files are on the same partition as the boot file it loads no problem...quite a bit faster too.

not the solution i was looking for exactly but not sure what else could be the problem.
« Last Edit: 30 / December / 2010, 09:14:11 by bdasmith »
sx20is 1.02d

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Offline xavan

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Re: the sx20 porting thread
« Reply #1009 on: 01 / January / 2011, 13:00:30 »
I did an experiment to check the relationship between the quality factor and the effective video bit rate.
Any shooting beyond a bitrate of 20 Mb/s crashes after a few seconds and this is whatever the card speed (tested  with class 2 and 6 sd cards).

Quality   bit rate (Mb/s)
20   5,8
30   6,2
40   9,6
50   16
60   18
60   15,3
65   20,7
70   30
75   71,6
80   55
80   64

So it seems that  CHDK does not allow to exceed the programmed bit rate (close to 25 Mb/s) . . .
It's a pity.

 

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