[aklug] fun with ums_realtek module

Recently I was going through my logs and noticed a huge number of
messages repeating:

sd 5:0:0:0: [sdb] Test WP failed, assume Write Enabled
sd 5:0:0:0: [sdb] Asking for cache data failed
sd 5:0:0:0: [sdb] Assuming drive cache: write through

 From looking around this seemed to have the most information about the issue:

http://askubuntu.com/questions/132100/errors-in-dmesg-test-wp-failed-assume-write-enabled

The basic solution is to create an options file:
/etc/modprobe.d/ums_realtek.conf

Inside of that put:

options ums_realtek ss_en=0

Reload the module and you should be good to go.

There are several references to this having been resolved in a recent
kernel, but not as far as I can tell.

This reference:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760

Said that the above ideas didn't work for them and so had to use
udisks command to get things right (comment #75)

It also seems that these messages don't realy cause any harm, but why
have them there if I can resolve it? :)

Isn't this fun? :)

Mike B.
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Received on Wed Jan 7 23:02:17 2015