topic Re: Alcor card reader not working with Linux in Operating System - Linux

Alcor card reader not working with Linux

leemflee — Thu, 03 Jan 2013 03:08:29 GMT

My Alcor card reader that was installed and came with my new PC will not recognize any SD card inserted into it. I am running Ubuntu 12.10 which is the latest version. The Linux kernel version is 3.5.0-21. Output from lsusb shows the following: "Bus 001 Device 002: ID 058f:6364 Alcor Micro Corp. AU6477 Card Reader Controller" but no messages from dmesg show when inserting an SD card. How can I get this to work?

P.S.This thread has been moved from Storage>General to Linux > sysadmin- HP Forums Moderator

Re: Alcor card reader not working with Linux

Matti_Kurkela — Thu, 03 Jan 2013 09:38:06 GMT

Is the usb_storage kernel module loaded?

The system might be trying to use the alternative USB block device driver module ("ub") instead.

To make the system prefer the usb_storage module instead of ub, you might want to create a file named /etc/modprobe.d/usb-libusual.conf, with the following content:

options libusual bias=usb-storage
options usb_libusual bias=usb-storage

(I'm not sure whether the kernel 3.5 uses the "old" or the "new" name for usb_libusual. This should cover both cases, and the extra line should be harmless.)

As far as I know, the ub module is scheduled for removal, since the problems with some USB storage devices and the usb_storage module have apparently been solved and the ub module has become redundant.

Re: Alcor card reader not working with Linux

leemflee — Wed, 16 Jan 2013 23:16:50 GMT

Thank you for the response. I created the file as you suggested and restarted the computer, but inserting media still did not mount. Is there something else I can check or run to verify the media should be found? Thank!