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-   -   problems with N900 sensors (https://talk.maemo.org/showthread.php?t=97365)

muto 2016-08-26 09:19
problems with N900 sensors
 
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?!

pichlo 2016-08-26 11:22
Re: problems with N900 sensors
 
Missing magnets?

See also this thread for other issues you may have with replacement cases.

muto 2016-08-26 12:16
Re: problems with N900 sensors
 
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...

ontime 2016-08-26 16:56
Re: problems with N900 sensors
 
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

Ridd92 2016-08-27 14:10
Re: problems with N900 sensors
 
Lately Im haveing similar problems.

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

peterleinchen 2016-08-27 15:10
Re: problems with N900 sensors
 
Quote:
Originally Posted by Ridd92 (Post 1513636)
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? :cool:

Why not just open/close/open and check dmesg' latest output directly after that?

elros34 2016-08-27 15:15
Re: problems with N900 sensors
 
1 Attachment(s)
Look, my card detection and cover sensor doesn't work too. Guess why :D
Earlier I used small magnet attached straight to indicated component.
You can also use search function to find this.

Ridd92 2016-08-28 06:24
Re: problems with N900 sensors
 
Quote:
Originally Posted by peterleinchen (Post 1513639)
Oh, you closed/opened cover exactly at the same time as
ontime? :cool:

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 2016-08-28 13:00
Re: problems with N900 sensors
 
Quote:
Originally Posted by elros34 (Post 1513641)
Look, my card detection and cover sensor doesn't work too. Guess why :D
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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