I am running ubuntu 12.04 LTS 64 bit on a Dell Vostro 3550 and I have
experienced this issue as well. However, the problem has been SOLVED by
simply removing the factory installed dummy from the SD slot.
Apparently, the relevant driver is designed to detect a SD module via
the slot plug-in switch activation. As such, any object with the right
shape that could activate this switch will be detected as a valid SD
module. The ensuing syslog messages are a result of the automout trying
(every ~ 45 seconds) to mount what is in fact an invalid device.
Should these messages be generated with an empty SD slot, I would
suspect the slot plug-in switch to be faulty ("on" all the time).
Consequently, I do not believe this to be a kernel bug, although it may
be possible to find a more reliable way to detect a valid SD module for
the device driver.
Regards
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https://bugs.launchpad.net/bugs/925760
Title:
Constant warnings from the kernel: Test WP failed, assume Write
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