Messages in this thread | | | Date | Thu, 22 May 2008 14:22:17 -0400 | Subject | Re: 2.6.24 not recognizing 2G MMC card? | From | "J. Bruce Fields" <> |
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On Thu, May 22, 2008 at 07:10:22PM +0100, Tom Spink wrote: > 2008/5/22 J. Bruce Fields <bfields@fieldses.org>: > > On Wed, May 21, 2008 at 07:01:10PM +0100, Tom Spink wrote: > >> 2008/5/21 J. Bruce Fields <bfields@fieldses.org>: > >> > Please forgive a somewhat naive question--I'm not sure how to go about > >> > debugging this kind of thing: > >> > > >> > I have a Dell 1420n with card readers reported by lspci as: > >> > > >> > 03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) > >> > 03:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12) > >> > > >> > I have a 512MB MicroSD card which seems to be recognized fine, but a 2GB > >> > MMC card is not. > >> > > >> > I'm using a stock Ubuntu 8.04 kernel, which reports itself as > >> > 2.6.24-16-generic. > >> > > >> > Skimming through commits to drivers/mmc, > >> > 5ae70296c85f96a9969891d9de3410ebdf210b71 "mmc: Disabler for Ricoh MMC > >> > controller", looks relevant, but seems to be included in 2.6.24. > >> > > >> > Anything I should try? Thanks in advance for any suggestions. > >> > > >> > --b. > >> > >> Hi, > >> > >> What does: lsmod | grep ricoh, give you? Anything? > > > > root@pig:/home/bfields# lsmod | grep ricoh > > ricoh_mmc 4352 0 > > > > --b. > > > > So does the MMC card work on other card readers, i.e. it's not > damaged?
I use it in a Nokia 770, and it works there.
It needs an adapter for the laptop which it doesn't need for the 770; googling around.... Something that looks like this:
http://www.globemaster.com.tw/data/rs mmc adapter.jpg
So I suppose the adapter could be broken. Seems unlikely, though--doesn't look like it does anything more than make the card fit physically in the slot.
> When you plug the card into the reader, can you check dmesg > and see if there's any relevant information in there, and post it > here?
It doesn't trigger any dmesg output at all.
--b.
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