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CaptainBlood
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PostPosted: Sat Jan 30, 2016 12:16 pm    Post subject: Sandisk SDHC troubles Reply with quote

At mmc insert, system logs
Code:
mmc0: cannot verify signal voltage switch
mmc0: new ultra high speed SDR104 SDHC card at address 0007
mmcblk0: mmc0:0007 SL16G 14.4 GiB
mmcblk0: p1
mmcblk0: unknown error -22 sending read/write command, card status 0x900
mmc0: cannot verify signal voltage switch
mmc0: tried to reset card
mmcblk0: unknown error -22 sending read/write command, card status 0x900
blk_update_request: 1 callbacks suppressed
blk_update_request: I/O error, dev mmcblk0, sector 8984
blk_update_request: I/O error, dev mmcblk0, sector 8992
blk_update_request: I/O error, dev mmcblk0, sector 9000
blk_update_request: I/O error, dev mmcblk0, sector 9008
blk_update_request: I/O error, dev mmcblk0, sector 9016
blk_update_request: I/O error, dev mmcblk0, sector 9024
blk_update_request: I/O error, dev mmcblk0, sector 9032
blk_update_request: I/O error, dev mmcblk0, sector 9040
blk_update_request: I/O error, dev mmcblk0, sector 9048
mmcblk0: unknown error -22 sending read/write command, card status 0x900


mmc gets rarely automounted.
storage media is new.

Any idea what to do?

Thks 4 ur attention.
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NeddySeagoon
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Posts: 43195
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PostPosted: Sat Jan 30, 2016 12:54 pm    Post subject: Reply with quote

CaptainBlood,

Not all card readers are equal. Not all cards are equal either.

Over the years, as memory cards have got bigger, standards have changed, so old hardware knows nothing of new standards.
Code:
mmc0: new ultra high speed SDR104 SDHC card at address 0007
mmcblk0: mmc0:0007 SL16G 14.4 GiB
mmcblk0: p1
mmcblk0: unknown error -22 sending read/write command, card status 0x900
mmc0: cannot verify signal voltage switch
suggets the reader and card are not compatible.

It looks like the kernel driver is trying to determine the voltages it should use on the data/address signal lines and either the card or reader does not know how to do that.

Have you used ultra high speed (SDXC) cards with that reader?
Can you try the card in another reader?
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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CaptainBlood
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Posts: 1103

PostPosted: Sat Jan 30, 2016 2:17 pm    Post subject: Reply with quote

I've thrown the the hardware package away.
Nevertheless seems to be a
Code:
SanDisk microSDHC Ultra 16 Gb UHS-1

Because I like lean kernel configs, I had to update it to get the device working.

I've just successfully tried the new device with my old HTC Wildfire which is 4 to 5 years old. Doing so allowed me to insure it hasn't be bricked for what ever reason.

The initial mobile phone SD card has successfully been mounted on gentoo at first attempt.

Nevertheless in pretty sure data stored in the new SD card have been copied via gentoo,
And I'm 100% sure device got mounted for a while after a few trials @ kernel settings.

Old SD card returns
Code:
Jan 30 17:10:03 n kernel: mmc0: new high speed SDHC card at address 0001
mmcblk0: mmc0:0001 00000 14.7 GiB
mmcblk0: p1
FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
udisksd[2218]: Mounted /dev/mmcblk0p1 at /run/media/luc/7984-090D on behalf of uid 1000


Thks 4 ur attention, interest & support
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NeddySeagoon
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PostPosted: Sat Jan 30, 2016 2:25 pm    Post subject: Reply with quote

CaptainBlood,

That's two different generations of cards.

The old one is
Code:
Jan 30 17:10:03 n kernel: mmc0: new high speed SDHC card at address 0001

The new one is
Code:
mmc0: new ultra high speed SDR104 SDHC card at address 0007


Notice the "ultra" snuck in there.

They are supposed to be backwards compatible, with the emphasis on "supposed to be".
The idea is that ultra high speed cards can operate at the old speeds and voltages and signalling methods if needed.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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CaptainBlood
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Posts: 1103

PostPosted: Sat Feb 06, 2016 9:55 am    Post subject: Reply with quote

Hi,
It just so happend new sd card got automounted in lxde @ boot.
Any tip what and where to grab information that could help to troubleshoot this issue?
Thks 4 ur attention, interest & support
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