Hi, I've got three microSD cards. They work fine on my PCs, I've done read/write tests and data is not corrupted. But, in my N900, two of the three are not stable, leading to corruption. Transcend 8GB class 6 - bad Adata 16GB class 10 - bad Sandisk 16GB class 2 - good I suspect maybe the N900 isn't providing enough voltage to the SD card and some cards are less tolerant of low-voltage situations than others. Does anyone know if it's possible to tell what voltage it is using or change the voltage of the SD card in N900? Or if there's some other explanation... maybe I have bad luck, maybe the cards are bad but only the N900 can expose it. dmesg shows things like this: [33713.501464] mmcblk1: error -110 sending read/write command, response 0x900, card status 0xe00 [33713.501495] mmcblk1: error -110 transferring data, sector 27271168, nr 8, card status 0xc00 [33713.570129] end_request: I/O error, dev mmcblk1, sector 27271169 [33713.570159] Buffer I/O error on device mmcblk1p4, logical block 0 [33713.570159] lost page write due to I/O error on mmcblk1p4 [33754.895355] mmcblk1: error -110 transferring data, sector 30941184, nr 16, card status 0xc00 [33754.895690] end_request: I/O error, dev mmcblk1, sector 30941185 [33754.895721] Buffer I/O error on device mmcblk1p4, logical block 458752 [33754.895751] lost page write due to I/O error on mmcblk1p4 [33754.895812] end_request: I/O error, dev mmcblk1, sector 30941192 [33754.895843] Buffer I/O error on device mmcblk1p4, logical block 458753 [33754.895843] lost page write due to I/O error on mmcblk1p4 [33755.504272] mmcblk1: error -110 transferring data, sector 31203328, nr 16, card status 0xc00 [33755.504638] end_request: I/O error, dev mmcblk1, sector 31203329 [33755.504669] Buffer I/O error on device mmcblk1p4, logical block 491520 [33755.504699] lost page write due to I/O error on mmcblk1p4 [33755.504760] end_request: I/O error, dev mmcblk1, sector 31203336 [33755.504760] Buffer I/O error on device mmcblk1p4, logical block 491521 [33755.504791] lost page write due to I/O error on mmcblk1p4 [33756.204315] mmcblk1: error -110 sending read/write command, response 0x900, card status 0xe00 [33756.204345] mmcblk1: error -110 transferring data, sector 31465472, nr 16, card status 0xc00 [33756.268493] end_request: I/O error, dev mmcblk1, sector 31465473 [33756.268524] Buffer I/O error on device mmcblk1p4, logical block 524288 [33756.268554] lost page write due to I/O error on mmcblk1p4 [33756.268585] end_request: I/O error, dev mmcblk1, sector 31465480 [33756.268615] Buffer I/O error on device mmcblk1p4, logical block 524289 [33756.268615] lost page write due to I/O error on mmcblk1p4 [33756.968139] mmcblk1: error -110 sending read/write command, response 0x900, card status 0xe00 [33756.968200] mmcblk1: error -110 transferring data, sector 31727616, nr 16, card status 0xc00 [33757.027191] end_request: I/O error, dev mmcblk1, sector 31727617 [33757.027221] Buffer I/O error on device mmcblk1p4, logical block 557056 [33757.027252] lost page write due to I/O error on mmcblk1p4 [33757.027313] end_request: I/O error, dev mmcblk1, sector 31727624 [33757.027313] Buffer I/O error on device mmcblk1p4, logical block 557057 [33757.027343] lost page write due to I/O error on mmcblk1p4 [33757.727172] mmcblk1: error -110 sending read/write command, response 0x900, card status 0xe00 [33757.727203] mmcblk1: error -110 transferring data, sector 31989760, nr 16, card status 0xc00 [33757.786773] end_request: I/O error, dev mmcblk1, sector 31989761 [33757.786804] Buffer I/O error on device mmcblk1p4, logical block 589824 [33757.786834] lost page write due to I/O error on mmcblk1p4 [33757.786865] end_request: I/O error, dev mmcblk1, sector 31989768 [33758.486755] mmcblk1: error -110 sending read/write command, response 0x900, card status 0xe00 [33758.486816] mmcblk1: error -110 transferring data, sector 32251904, nr 16, card status 0xc00 [33758.549682] end_request: I/O error, dev mmcblk1, sector 32251905 [33758.549774] end_request: I/O error, dev mmcblk1, sector 32251912 _______________________________________________ maemo-users mailing list maemo-users@xxxxxxxxx https://lists.maemo.org/mailman/listinfo/maemo-users
