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muto is offline muto
2016-08-26 , 09:19
Posts: 76 | Thanked: 110 times | Joined on Dec 2009 @ FI
#1
Maybe one month ago i changed my N900 to another because the camera shutter sensor did not work anymore. I tried two different backplates without success.

Now this second N900 does not anymore detect backplate and because of this i am not able to use sd-cards! dmesg does not show anything when i remove and insert the back plate. Magnet is there(stand locks down normally).

What is killing my N900s?!
 

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pichlo is offline pichlo
2016-08-26 , 11:22
Posts: 6,447 | Thanked: 20,981 times | Joined on Sep 2012 @ UK
#2
Missing magnets?

See also this thread for other issues you may have with replacement cases.
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muto is offline muto
2016-08-26 , 12:16
Posts: 76 | Thanked: 110 times | Joined on Dec 2009 @ FI
#3
Magnet is there. I have tested both problems with two backplates. Cases are original. I have working phones too. I expect backplates to be ok. I will test this...
 

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ontime is offline ontime
2016-08-26 , 16:56
Posts: 29 | Thanked: 88 times | Joined on Oct 2015
#4
What "dmesg" command shows, when you open & close cover? Should be sth like that:

[97938.596374] mmc0: cover is open, card is now inaccessible
[97938.906646] mmc0: card 1234 removed
[97940.222595] mmc0: cover is closed, card is now accessible
[97940.743347] mmc0: host does not support reading read-only switch. assuming write-enable.
[97940.743377] mmc0: new high speed SDHC card at address 1234
[97940.763427] mmcblk2: mmc0:1234 SA08G 7.41 GiB
[97940.763702] mmcblk2: p1 p2 p3
 

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Ridd92 is offline Ridd92
2016-08-27 , 14:10
Posts: 188 | Thanked: 223 times | Joined on Apr 2013 @ Poland
#5
Lately Im haveing similar problems.

In my case the dmesg output is so huge, but between 97800.611450 and 98010.496429 I got nothing.
 

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peterleinchen is offline peterleinchen
2016-08-27 , 15:10
Posts: 4,118 | Thanked: 8,901 times | Joined on Aug 2010 @ Ruhrgebiet, Germany
#6
Originally Posted by Ridd92 View Post
In my case the dmesg output is so huge, but between 97800.611450 and 98010.496429 I got nothing.
Oh, you closed/opened cover exactly at the same time as
ontime?

Why not just open/close/open and check dmesg' latest output directly after that?
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elros34 is offline elros34
2016-08-27 , 15:15
Posts: 578 | Thanked: 994 times | Joined on Dec 2012
#7
Look, my card detection and cover sensor doesn't work too. Guess why
Earlier I used small magnet attached straight to indicated component.
You can also use search function to find this.
Attached Images
 
 

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Ridd92 is offline Ridd92
2016-08-28 , 06:24
Posts: 188 | Thanked: 223 times | Joined on Apr 2013 @ Poland
#8
Originally Posted by peterleinchen View Post
Oh, you closed/opened cover exactly at the same time as
ontime?

Why not just open/close/open and check dmesg' latest output directly after that?
Yes, exactly this way.

Today I applied patch from this post:

Code:
https://talk.maemo.org/showthread.php?p=1513680
So the card is detected but Im still haveing trouble with mounting it
 
Ridd92 is offline Ridd92
2016-08-28 , 13:00
Posts: 188 | Thanked: 223 times | Joined on Apr 2013 @ Poland
#9
Originally Posted by elros34 View Post
Look, my card detection and cover sensor doesn't work too. Guess why
Earlier I used small magnet attached straight to indicated component.
You can also use search function to find this.
Hey, I just realized my n900 missing the same piece of magnet, if I just replace it with something magnet like, will it work?

Edit: Ok, dumb question xD
 
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