I've recently flashed the stock firmware onto my Samsung Galaxy S3 because there was one feature which didn't work on CyanogenMod. My external SD card worked fine until recently - the 'mount SD card' option in Settings is now grayed out, and whenever I insert the SD card into the device, the following messages appear in the logcat:
W/MountService( 3370): Failed to mount media on insertion W/MountService( 3370): java.lang.NullPointerException W/MountService( 3370): at com.android.server.MountService.doMountVolume(MountService.java:1212) W/MountService( 3370): at com.android.server.MountService.doMountVolume(MountService.java:1288) W/MountService( 3370): at com.android.server.MountService.access$2100(MountService.java:134) W/MountService( 3370): at com.android.server.MountService$6.run(MountService.java:1021)
My computer seems to recognise the SD card just fine. Can anyone help me with solving this problem?
Update 1: I was successful in mounting the SD card manually using the shell command from this tutorial: http://forum.xda-developers.com/showthread.php?t=1804573, however it was only accessible to apps with root permissions.
Update 2: As suggested in the comments section, I formatted the card in question to exFAT. The problem persists.
Update 3: The
/proc/kmsg) file seemed to have some relevant information. This is what got logged into it when I removed then inserted the card:
<6>[ 5096.384848] c2 mmc1: card removed. <6>[ 5096.385093] c0 mmc1: card e624 removed <6>[ 5096.478613] c0 sdhci_set_ios : MMC Card OFF samsung-hsmmc <6>[ 5097.221780] c2 mmc1: card removed. <6>[ 5097.221830] c2 mmc1: card inserted. <6>[ 5097.421722] c2 sdhci_set_ios : MMC Card ON samsung-hsmmc <6>[ 5097.450386] c0 mmc1: cmd 52 command timeout error <6>[ 5097.450735] c0 mmc1: cmd 52 command timeout error <6>[ 5097.454610] c0 mmc1: cmd 5 command timeout error <6>[ 5097.454944] c0 mmc1: cmd 5 command timeout error <6>[ 5097.455274] c0 mmc1: cmd 5 command timeout error <6>[ 5097.455606] c0 mmc1: cmd 5 command timeout error <6>[ 5097.599241] c2 mmc1: new high speed SDHC card at address e624 <6>[ 5097.600105] c3 mmcblk1: mmc1:e624 SU32G 29.7 GiB <6>[ 5097.614116] c3 mmcblk1: p1