Messages in this thread | | | Date | Thu, 22 May 2008 19:27:12 +0100 | From | "Tom Spink" <> | Subject | Re: 2.6.24 not recognizing 2G MMC card? |
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2008/5/22 J. Bruce Fields <bfields@fieldses.org>: > 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.
Hmm. It is worth a check, given your next response...
> >> 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.
Interesting. I'd expect to see something appearing about the card. I'm afraid I'm not sure what to suggest next, if there's no debug output.
> > --b. >
-- Tom Spink
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