Ubuntu
kde4libs package

Kded4 freezes after wake-up

Bug #777526 reported by Ladislav Nesnera on 2011-05-05

This bug report is a duplicate of: Bug #755608: Ntrack dead loop in function get_nl_link_by_index . Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	kde4libs (Ubuntu)	New	Undecided	Unassigned

Bug Description

KDE almost freezes for few minutes after computer wake up from suspend to RAM mode. In the same time kded4 process spends 100% of the CPU or 100% of one CPU's core.

HW config - http://www.smolts.org/client/show/pub_ca11fdb4-ef19-49e9-b713-d4465729e5f0

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: kdelibs-bin 4:4.6.2-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Thu May 5 03:36:29 2011
ExecutablePath: /usr/bin/kdeinit4
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: kde4libs
UpgradeStatus: No upgrade log present (probably fresh install)

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Revision history for this message

Ladislav Nesnera (nesnera) wrote on 2011-05-05:

Dependencies.txt Edit (2.8 KiB, text/plain; charset="utf-8")
ProcMaps.txt Edit (82.8 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (791 bytes, text/plain; charset="utf-8")
XsessionErrors.txt Edit (7.8 KiB, text/plain; charset="utf-8")

Revision history for this message

Ladislav Nesnera (nesnera) wrote on 2011-05-18:

As seems the problem is tied with Huawei E1750 USB Modem - UMTS (3G)
Workaround is:
1) kill -9 of kdm4 (usually at different TTY beccouse is unpossible to open new window with terminal)
2) run kdm4 (I'm using krunner for it)
3) remove Modem from USB and reconnect

lsusb
Bus 002 Device 012: ID 12d1:1001 Huawei Technologies Co., Ltd. E620 USB Modem

top output is little bit strange - more than 100% CPU?..

top - 23:58:08 up 4:47, 3 users, load average: 1.16, 1.05, 1.06
Tasks: 182 total, 2 running, 178 sleeping, 0 stopped, 2 zombie
Cpu(s): 27.8%us, 1.3%sy, 0.0%ni, 70.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 7982908k total, 3661620k used, 4321288k free, 78788k buffers
Swap: 0k total, 0k used, 0k free, 1814864k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4433 ln 20 0 641m 36m 27m R 102 0.5 0:35.51 kded4
2297 ln 20 0 1172m 242m 38m S 3 3.1 24:36.47 firefox-bin
939 root 20 0 330m 49m 8252 S 3 0.6 47:10.47 Xorg
6853 ln 20 0 805m 116m 36m S 2 1.5 0:13.04 kontact