It appears that this patch appears to enable the card reader, it fails to mount/use/unmount MMC cards successfully. We are seeing failures on two Toshiba R850 (Intel and AMD) laptops with the 11.04 release of Natty.
The output from lspci is: * System peripheral: Ricoh Co Ltd Device e823 (rev 04) It appears to be a known issue according to: * http://groups.google.com/group/linux.kernel/browse_thread/thread/81d5997647563887?pli=1 And it doesn't appear others have reported successfully using MMC. -- cut and paste from the URL above -- Okay. There's nothing in the log about Ricoh, which probably means that it bailed out early in the function. You could add a printk to the top of ricoh_mmc_fixup_rl5c476() if you want to be really sure that the code there is getting a chance to run. I think the likely conclusion is that: (a) The Ricoh controller has a proprietary MMC function that is stealing MMC cards away from the SDHCI controller even though the SDHCI could read them if it had a chance to. (b) We don't know how to turn the MMC controller off, because our old method for doing so isn't working on this new 0xe823 model. I'm adding a few people who've touched this code to CC: in case they have any ideas on working out how to disable the MMC function. If you have contact with Ricoh directly or through a vendor, please ask them for the PCI configuration writes needed to disable the MMC function on this model so that you can read MMC cards with the SD interface instead. -- end copy and paste -- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/717435 Title: [MAVERICK] Ricoh e823 Media card reader not functional -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
