[Bug 27852] I/O errors when connecting SD (secure digital) flash cards

Andy Bovett abovett at arda.demon.co.uk
Tue Jan 31 20:41:17 UTC 2006


Public bug report changed:
https://launchpad.net/malone/bugs/27852

Comment:
sudo rmmod ehci_hcd didn't work - it's not loaded anyway (I guess it's
because this box is too old for USB2).

I'm a bit confused about the bit about changing
/sys/block/sda/queue/max_sectors_kb - when should I do it? The command
fails before the device is plugged in because /sys/block/sda doesn't
exist (I take it it's created by udev or something like that?) If I do
it after plugging in the USB device, it seems to make no difference what
value I write to the max_sectors_kb file - I still can't mount the
device.

I haven't (yet) tried building a custom kernel - I've never tried before
so I'm not too sure what I'm doing, and I haven't got a lot of spare
time at the moment. If it's possible for someone else to do it it would
be good.

(By the way - I checked all this lot on Breezy, as Dapper still has
other, bigger problems on that box).




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