why would my onboard SD/MMC reader suddenly stop working?

Liam Proven lproven at gmail.com
Sun Nov 11 13:20:59 UTC 2012

On 11 November 2012 12:43, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
>   currently, on my ASUS G74S laptop, i get absolutely no activity when
> i insert a perfectly valid SD card.  used to be, it would be mounted
> automatically -- now ... nothing.
>   i've rolled my own kernels for quite some time, and i just keep
> using the same .config.  i've checked the kernel config options, and
> pretty much everything under SD/MMC is selected as modules.
>   i've tailed the kern.log file, i've put udev in monitor mode trying
> to figure out if *anything* recognizes that an SD card has been
> inserted and nothing so far.  the mmc_block module is currently
> loaded.
>   am i just stupidly missing something obvious?  i mean, besides the
> reader itself being actually broken?
>   off to experiment some more ...

[1] Try a different card.
[2] Try the suspect card in a different machine and/or different reader.
[3] Try under a different OS, e.g. a LiveCD.

You need to isolate exactly what's going wrong.

I have seen solid-state Flash media just die for no apparent reason,
several times now: CF, SD, microSD.

Liam Proven • Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk • GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com • Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 • Cell: +44 7939-087884

More information about the ubuntu-users mailing list