 Dmesg: "card Has Unknown Mmca Version 4", 1GiB MMCplus card "extrememory 100x" |
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 Mar 7 2006, 02:24 PM
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#1
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Group: Members Posts: 88 Joined: 10-February 06 Member No.: 9,115  |
After I decided I wouldn't like SD anymore for their closed-source only policy I bought 1 Gig MMC card, to my surprise it was reasonably priced and theoretically fast (15MBit/s). OK it's a "plus" and I don't know whether Z supports "plus", but I can live with "minus" speed. It's works well in my camera's SD slot and not slower than my SD card.
Under OZ 3.5.3, kernel 2.6, I get the "mmc0:card has unknown MMCA version 4" in dmesg. Anyone familar with that? They should be downwards compatible; thus, I hope it would be sufficient to tell who ever issued that error to treat version 4 the same as prior versions. Any hints? jan |
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Mar 7 2006, 10:39 PM
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#2
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 Group: Members Posts: 1,376 Joined: 11-January 04 From: Poznań, Poland Member No.: 1,413 |
2.6 sd/mmc support is limited to type of cards for which specifications are available. This means that not all cards will work ;(
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Mar 8 2006, 01:12 AM
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#3
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 Group: Members Posts: 1,014 Joined: 4-January 05 From: Enschede, The Netherlands Member No.: 6,107 |
There are several patches available to add mmca v4 to 2.6 and iirc one of them should be in 2.6.16
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Mar 8 2006, 04:55 AM
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#4
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Group: Members Posts: 88 Joined: 10-February 06 Member No.: 9,115 |
QUOTE(Hrw @ Mar 8 2006, 08:39 AM) 2.6 sd/mmc support is limited to type of cards for which specifications are available. This means that not all cards will work ;(  Now that I know that. Is there a compatibility list? (Vendors don't usually print things like MMCA version on the packages.) |
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Mar 8 2006, 05:10 AM
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#5
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Group: Members Posts: 1,376 Joined: 11-January 04 From: Poznań, Poland Member No.: 1,413 |
There is no such list. Making it is nearly impossible in a world where you can get 5 same looking cards which will be completly different inside.
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