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Problem with SDHC card on Acer Aspire One with ArchLinux

Ok, here's my very weird problem :

I'm running ArchLinux with kernel 2.6.28 with all the latests updates and I've followed everything I could find on the Arch wiki ( http://wiki.archlinux.org/index.php/Acer_Aspire_One ).

Unfortunatly, my left SDHC card reader does not work with my A-Data 8GB card. The thing is, if I boot Live using Fedora, Linpus or even using Arch on a usb drive, then it works :S

When I plug it in and run "dmesg | tail", I get

mmc0: error -84 whilst initialising SD card

and no entry in /dev/ is created (normally it creates /dev/mmcblk0).

If I use any other SD card, then it work. Also, if I use my card in somebody else's laptop, it works. Using the right SD card reader results in the exact same behaviour.

Since the Aspire One's SSD is only 8GB, I kinda need that SD card to work ...

btw, forgot to mention, I've tried reformating in many different ways (e.g. : ext2, fat16, fat32, xfs) and still no results.

Anybody got an idea ?
Ced

Do you have the right BIOS version on the AAO ? the info below is from the Ubuntu AAO wiki

https://help.ubuntu.com/community/AspireOne

Quote:

# Card Readers, BIOS 3109 [ Work out of the box, but write errors after suspend and on SDHC cards]
# Card Readers, BIOS 3305 [ Pre 2.6.27.7: Only right card reader works after setpci described above; see below for SDHC support]
# Card Readers, BIOS 3305 [ 2.6.27.7: Both card readers work again after setpci described above; see below for SDHC support; The insertion of cards is automatically detected.]
# Remark 1: Support for SDHC cards can be enabled with BIOS 3305 and 3309 for kernel 2.6.27 and 2.6.28 via a module parameter. Add "options sdhci debug_quirks=1" (without double quotes) as seperate line to a new file in directory "/etc/modprobe.d" so that the "sdhci" kernel module loads with this module parameter.
# Remark 2: The kernel module "pciehp" is necessary with BIOS 3309 for kernel 2.6.27 and 2.6.28 to enable automatic card detection in the right card reader. Add "options pciehp pciehp_force=1" (without double quotes) as seperate line to a new file in directory "/etc/modprobe.d". The "setpci" command is no longer required with these BIOS and kernel versions.

#Conclusion: The card readers are fully supported with BIOS 3309 and kernel >=2.6.27. Two module parameters are required therefore.

solution "found"

I had the right bios, and I was kinda tired of searching for a solution. Eventually I did a pacman -Syu and it updated all sorts of packages (including xfce 4.4 -> 4.6 , which is very nice) and something in there solved my problem (possibly the new kernel)

cheers

Thanks for checking back with an update on your status..

at least all is working now :)