http://bugzilla.opensuse.org/show_bug.cgi?id=900273
Maxim Mikityanskiy
(In reply to Takashi Iwai from comment #20)
Thanks for tracking down!
So, it comes from USB, but a specific device. Oliver, any idea?
We might be hitting a race with the poll for medium change. Can you try with the attribute "events_poll_msecs" for the device in sysfs set to -1?
I experience the same problem on Lenovo Ideapad Z570, Gentoo, kernel 3.17.4. I also use KDE and systemd. Sometimes laptop does not go to suspend, further writes to /sys/power/state result in "Device or resourse busy", and I can't rmmod rtsx_usb_sdmmc and bbswitch, rmmod just hangs in D state. I inserted SD card, but events_poll_msecs does not appear: max@ideapad ~ % ls -l /sys/block/mmcblk0/ total 0 -r--r--r-- 1 root root 4096 Dec 7 12:31 alignment_offset lrwxrwxrwx 1 root root 0 Dec 7 12:31 bdi -> ../../../../../../../../../../../../virtual/bdi/179:0 -r--r--r-- 1 root root 4096 Dec 7 12:31 capability -r--r--r-- 1 root root 4096 Dec 7 12:31 dev lrwxrwxrwx 1 root root 0 Dec 7 12:31 device -> ../../../mmc0:0002 -r--r--r-- 1 root root 4096 Dec 7 12:31 discard_alignment -r--r--r-- 1 root root 4096 Dec 7 12:31 ext_range -rw-r--r-- 1 root root 4096 Dec 7 12:31 force_ro drwxr-xr-x 2 root root 0 Dec 7 12:31 holders -r--r--r-- 1 root root 4096 Dec 7 12:31 inflight drwxr-xr-x 2 root root 0 Dec 7 12:31 power drwxr-xr-x 3 root root 0 Dec 7 12:31 queue -r--r--r-- 1 root root 4096 Dec 7 12:31 range -r--r--r-- 1 root root 4096 Dec 7 12:31 removable -r--r--r-- 1 root root 4096 Dec 7 12:31 ro -r--r--r-- 1 root root 4096 Dec 7 12:31 size drwxr-xr-x 2 root root 0 Dec 7 12:31 slaves -r--r--r-- 1 root root 4096 Dec 7 12:31 stat lrwxrwxrwx 1 root root 0 Dec 7 12:30 subsystem -> ../../../../../../../../../../../../../class/block -rw-r--r-- 1 root root 4096 Dec 7 12:31 uevent Instead, /sys/block/sda/events_poll_msecs exists, but it is hard drive, not the card reader. -- You are receiving this mail because: You are on the CC list for the bug.