Same problem on my Dell Mini 1010 with a solid state drive. The workaround from comment #8 works, I've added these lines in the file /etc/rc.local to make this change "temporarily permanent":
# Avoid constant kernel warnings about missing cache on SSD # see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925760 rmmod ums_realtek -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/925760 Title: Constant warnings from the kernel: Test WP failed, assume Write Enabled To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/925760/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs