The computer sometimes can't switch into sleep mode

[Karel Kozlik]

Sometimes when I want switch my computer into sleep mode, it fails. When I click sleep mode button, the procedure normaly began, but it does not finish and the computer wake-up again. I think the culprit is Amarok (see the line 50420.600093 in the attached dmesq log bellow). When I terminated Amarok and tried to switch into sleep mode again, it suceeded.

I meet this bug for longer time. For sure it was already in kubuntu 11.04. I am not sure about kubuntu 10.10.

[50392.332531] wlan0: deauthenticating from 00:02:cf:52:f8:63 by local choice (reason=3)
[50392.416182] cfg80211: All devices are disconnected, going to restore regulatory settings
[50392.416187] cfg80211: Restoring regulatory settings
[50392.416191] cfg80211: Calling CRDA to update world regulatory domain
[50392.420860] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain
[50392.420864] cfg80211: World regulatory domain updated:
[50392.420865] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[50392.420868] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[50392.420870] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[50392.420872] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[50392.420875] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[50392.420877] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[50394.218488] init: anacron main process (24162) killed by TERM signal
[50400.583127] PM: Syncing filesystems ... done.
[50400.584682] PM: Preparing system for mem sleep
[50400.584695] Freezing user space processes ...
[50420.600051] Freezing of tasks failed after 20.01 seconds (1 tasks refusing to freeze, wq_busy=0):
[50420.600093] amarok D ffffffff81605120 0 7516 1 0x00800004
[50420.600097] ffff88002b83b9b8 0000000000000086 ffff88002b83b9a8 ffffffff8106fa43
[50420.600101] ffff88002b83bfd8 ffff88002b83bfd8 ffff88002b83bfd8 0000000000012a40
[50420.600104] ffff8800b8f30000 ffff88009d9e8000 ffff88002b83b9c8 ffff88002b83ba30
[50420.600107] Call Trace:
[50420.600114] [<ffffffff8106fa43>] ? mod_timer+0x143/0x2f0
[50420.600136] [<ffffffffa0d2e7c0>] ? rpc_release_task+0xe0/0xe0 [sunrpc]
[50420.600144] [<ffffffffa0d2e7e4>] rpc_wait_bit_killable+0x24/0x40 [sunrpc]
[50420.600148] [<ffffffff815e88ef>] __wait_on_bit+0x5f/0x90
[50420.600155] [<ffffffffa0d2e7c0>] ? rpc_release_task+0xe0/0xe0 [sunrpc]
[50420.600158] [<ffffffff815e899c>] out_of_line_wait_on_bit+0x7c/0x90
[50420.600162] [<ffffffff81081cf0>] ? autoremove_wake_function+0x40/0x40
[50420.600169] [<ffffffffa0d2f415>] __rpc_execute+0xf5/0x1d0 [sunrpc]
[50420.600177] [<ffffffffa0d2f643>] rpc_execute+0x43/0x50 [sunrpc]
[50420.600183] [<ffffffffa0d278c5>] rpc_run_task+0x75/0x90 [sunrpc]
[50420.600189] [<ffffffffa0d279e3>] rpc_call_sync+0x43/0x70 [sunrpc]
[50420.600203] [<ffffffffa0dc8deb>] nfs3_rpc_wrapper.constprop.11+0x4b/0x80 [nfs]
[50420.600212] [<ffffffffa0dc8fde>] nfs3_proc_lookup+0xae/0x160 [nfs]
[50420.600218] [<ffffffffa0db1874>] nfs_lookup+0x134/0x1d0 [nfs]
[50420.600222] [<ffffffff81171ee5>] d_alloc_and_lookup+0x45/0x90
[50420.600225] [<ffffffff8117f745>] ? d_lookup+0x35/0x60
[50420.600228] [<ffffffff81174116>] do_lookup+0x216/0x2b0
[50420.600230] [<ffffffff81175294>] do_last+0xe4/0x700
[50420.600233] [<ffffffff81176ada>] path_openat+0xca/0x3f0
[50420.600236] [<ffffffff81176e42>] do_filp_open+0x42/0xa0
[50420.600239] [<ffffffff812f4761>] ? strncpy_from_user+0x31/0x40
[50420.600242] [<ffffffff815e9efe>] ? _raw_spin_lock+0xe/0x20
[50420.600245] [<ffffffff811841f7>] ? alloc_fd+0xf7/0x150
[50420.600249] [<ffffffff81166c0d>] do_sys_open+0xed/0x220
[50420.600251] [<ffffffff81166d60>] sys_open+0x20/0x30
[50420.600254] [<ffffffff815f22c2>] system_call_fastpath+0x16/0x1b
[50420.600270]
[50420.600271] Restarting tasks ... done.
[50420.601382] video LNXVIDEO:00: Restoring backlight state
[50421.676185] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[50421.732096] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[50421.732545] ADDRCONF(NETDEV_UP): eth0: link is not ready
[50421.788846] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[50432.175910] wlan0: authenticate with 00:02:cf:52:f8:63 (try 1)
[50432.178221] wlan0: authenticated
[50432.180816] wlan0: associate with 00:02:cf:52:f8:63 (try 1)
[50432.184577] wlan0: RX AssocResp from 00:02:cf:52:f8:63 (capab=0x411 status=0 aid=2)
[50432.184585] wlan0: associated
[50432.192593] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: amarok 2:2.4.3-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Thu Dec 8 10:15:29 2011
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
SourcePackage: amarok
UpgradeStatus: Upgraded to oneiric on 2011-11-19 (18 days ago)

[Harald Sitter (apachelogger)]

Hi there!

Thanks for reporting this bug! Your bug seems to be a problem with the KDE program itself, and not with our KDE packages. While we appreciate your issue, it would be better if it was tracked at https://bugs.kde.org, so that the KDE developers can deal with this speedily and have direct communication with you as the reporter for more effective debugging.

Thanks!