Created attachment 650058 [details]
dmesg
After update to current factory (with 4.2.1-1-desktop), following occured:
[ 960.640987] INFO: task modprobe:720 blocked for more than 480 seconds.
[ 960.640991] Not tainted 4.2.1-1-desktop #1
[ 960.640991] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 960.640993] modprobe D 0000000000000005 0 720 716 0x00000080
[ 960.640996] ffff88080bea7958 0000000000000086 ffff8800cae5c280
ffff88080b3b61c0
[ 960.640998] 0000000000000000 ffff88080bea8000 ffff880809768864
ffff88080b3b61c0
[ 960.640999] 00000000ffffffff ffff880809768868 ffff88080bea7978
ffffffff816a5dbe
[ 960.641001] Call Trace:
[ 960.641009] [<ffffffff816a5dbe>] schedule+0x3e/0x90
[ 960.641012] [<ffffffff816a61a5>] schedule_preempt_disabled+0x15/0x20
[ 960.641014] [<ffffffff816a7ae5>] __mutex_lock_slowpath+0xb5/0x120
[ 960.641017] [<ffffffff816a7b6b>] mutex_lock+0x1b/0x30
[ 960.641020] [<ffffffff8148656b>] device_release_driver+0x1b/0x30
[ 960.641023] [<ffffffff81485c15>] bus_remove_device+0x105/0x180
[ 960.641025] [<ffffffff814822b9>] device_del+0x139/0x260
[ 960.641031] [<ffffffffa05e0ec5>] snd_hdac_device_unregister+0x25/0x30
[snd_hda_core]
[ 960.641039] [<ffffffffa074fa6a>] snd_hda_codec_reset+0x2a/0x70
[snd_hda_codec]
[ 960.641044] [<ffffffffa075007b>] snd_hda_codec_build_pcms+0x18b/0x1b0
[snd_hda_codec]
[ 960.641048] [<ffffffffa074a44e>] hda_codec_driver_probe+0xbe/0x140
[snd_hda_codec]
[ 960.641051] [<ffffffff81486ac4>] driver_probe_device+0x1f4/0x460
[ 960.641054] [<ffffffff81486dc0>] __driver_attach+0x90/0xa0
[ 960.641056] [<ffffffff81484844>] bus_for_each_dev+0x64/0xa0
[ 960.641059] [<ffffffff814862de>] driver_attach+0x1e/0x20
[ 960.641061] [<ffffffff81485e7b>] bus_add_driver+0x1eb/0x280
[ 960.641063] [<ffffffff81487680>] driver_register+0x60/0xe0
[ 960.641066] [<ffffffffa074a0da>] __hda_codec_driver_register+0x5a/0x60
[snd_hda_codec]
[ 960.641070] [<ffffffffa070a01e>] realtek_driver_init+0x1e/0x1000
[snd_hda_codec_realtek]
[ 960.641075] [<ffffffff810002f3>] do_one_initcall+0xb3/0x200
[ 960.641077] [<ffffffff816a1fc5>] do_init_module+0x60/0x1f8
[ 960.641081] [<ffffffff810ee5c3>] load_module+0x1653/0x1bd0
[ 960.641083] [<ffffffff810eed48>] SYSC_finit_module+0x98/0xc0
[ 960.641085] [<ffffffff810eed8e>] SyS_finit_module+0xe/0x10
[ 960.641087] [<ffffffff816aa032>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 960.642311] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x16/0x75