binu_ji | # 61 | 2011-05-01, 06:48 | Report

my n900 is not detecting any mem card on the slot. i got this log by using dmesg command

[ 6168.557739] cam_shutter (GPIO 110) is now open
[ 6172.768463] cam_focus (GPIO 68) is now active
[ 6173.065277] cam_focus (GPIO 68) is now inactive
[ 6181.924774] cam_shutter (GPIO 110) is now closed
[ 6184.409271] kb_lock (GPIO 113) is now closed
[ 6184.894317] kb_lock (GPIO 113) is now open
[ 6196.776245] slide (GPIO 71) is now open
[ 6332.463928] slide (GPIO 71) is now closed
[ 6338.346557] cam_focus (GPIO 68) is now active
[ 6339.233398] mmc0: cover is open, card is now inaccessible
[ 6339.362213] cam_focus (GPIO 68) is now inactive
[ 6350.266296] mmc0: cover is closed, card is now accessible
[ 6357.377838] slide (GPIO 71) is now open

stickymick | # 62 | 2011-05-01, 06:52 | Report

Have you tried lifting the stand to see if the magnet is still intact?

binu_ji | # 63 | 2011-05-01, 06:55 | Report

Thaks for your reply.

yes the magnet is still there.

stickymick | # 64 | 2011-05-01, 07:31 | Report

With your dmseg output it doesn't look like there's a problem with the back cover.

Try removing the card and gently cleaning the contacts in the slot and on the card. A small piece of Blu-Tac should do the trick.

There were a lot of problems with Sandisk cards at one time. If you've got another card laying around try that one, see if it picks it up.

binu_ji | # 65 | 2011-05-01, 10:03 | Report

I already did that. but still not detecting.

binu_ji | # 66 | 2011-05-02, 06:09 | Report

Today i tried with a multimeter.
Placed the probes at 4 and 6 pin of the sd card connector and when i place a small magnet over the cover sensor to simulate the cover closed.

The multimeter needle goes up for a while and comes back to zero.

Totally confused...

KetkuFIN | # 67 | 2011-05-07, 07:09 | Report

hello, my SD too is not working. i get the following with the dmesg - command

8.067749] mmc0: error -110 whilst initialising SD card

an ideas, what this means?

eastrun84 | # 68 | 2011-07-26, 01:14 | Report

I have same problems here. First my Nokia N900 cannot detect SIMCARD, Another thing is it cannot detect microSD. And, I cannot charge my handphone through USB..Please help me here.I am stuck.

Catacylsm | # 69 | 2011-07-26, 13:00 | Report

Clean contacts, what brand of micro sd are they?

spain2468 | # 70 | 2011-07-26, 13:59 | Report

I have had this problem as well, if you look at the camera stand on the back cover there is a very small magnetic piece, mine fell out and my SD card then didn’t show up, when I put the magnetic piece back in the SD card showed up again.

Hope this works.