Comment # 26 on bug 900273 from Maxim Mikityanskiy

(In reply to Oliver Neukum from comment #25)
> OK, (In reply to Maxim Mikityanskiy from comment #24)
> 
> > Instead, /sys/block/sda/events_poll_msecs exists, but it is hard drive, not
> > the card reader.
> 
> Sorry, I overlooked that they don't use the generic mechanism. Does this
> happen with and without media in the reader?

I'm not sure, but it seems that the problem appears when I have microSD-to-SD
adapter (without microSD card) inserted in the reader. And it seems that there
is no problem when plastic stub is inserted in the reader. I haven't tested
with media.