There is a new raring kernel (3.8.0-32) with a zram fix (see bug 1233227). With it the "Buffer I/O error on device zram0" warning is no longer shown.
There is a new raring kernel (3.8.0-32) with a zram fix (see bug 1233227). With it the "Buffer I/O error on device zram0" warning is no longer shown.