[Bug 609113] Re: Thinkpad T400: kslowd processes take to much CPU, making mouse control impossible

[Till Kamppeter]

apport information

** Tags added: apport-collected

** Description changed:

  When I move the mouse (both internal touchpad and external Bluetooth) on
  the X display the movement gets uneven, as the computer had too high CPU
  load and other programs (like glxgears) get slowed down. In the output
  of "top" there are 4 "kslowdXXX" processes taking a lot of CPU.
  
  I am on Maverick with the following kernel:
  
  till at till:~/ghostscript/gpl/gs-test$ uname -a
  Linux till 2.6.35-6-generic #9-Ubuntu SMP Thu Jul 1 03:01:23 UTC 2010 x86_64 GNU/Linux
  till at till:~/ghostscript/gpl/gs-test$ 
  
  Graphics is Intel.
  
  After googling I found this thread which seems to discuss exactly the
  same problem:
  
  http://www.gossamer-threads.com/lists/linux/kernel/1238374
+ --- 
+ AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
+ Architecture: amd64
+ ArecordDevices:
+  **** List of CAPTURE Hardware Devices ****
+  card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
+ AudioDevicesInUse:
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  till       3413 F.... pulseaudio
+ CRDA: Error: [Errno 2] No such file or directory
+ Card0.Amixer.info:
+  Card hw:0 'Intel'/'HDA Intel at 0xfc020000 irq 48'
+    Mixer name	: 'Conexant CX20561 (Hermosa)'
+    Components	: 'HDA:14f15051,17aa211c,00100000'
+    Controls      : 14
+    Simple ctrls  : 7
+ Card29.Amixer.info:
+  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7VHT12WW-1.01'
+    Mixer name	: 'ThinkPad EC 7VHT12WW-1.01'
+    Components	: ''
+    Controls      : 1
+    Simple ctrls  : 1
+ Card29.Amixer.values:
+  Simple mixer control 'Console',0
+    Capabilities: pswitch pswitch-joined penum
+    Playback channels: Mono
+    Mono: Playback [on]
+ DistroRelease: Ubuntu 10.10
+ EcryptfsInUse: Yes
+ HibernationDevice: RESUME=UUID=9185f036-2e72-40e6-bf31-d9a8926a7883
+ MachineType: LENOVO 7417CTO
+ Package: linux (not installed)
+ PccardctlIdent:
+  Socket 0:
+    no product info available
+ PccardctlStatus:
+  Socket 0:
+    no card
+ ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-6-generic root=/dev/mapper/hostname-root ro quiet splash
+ ProcEnviron:
+  PATH=(custom, user)
+  LANG=en_US.utf8
+  SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 2.6.35-6.9-generic 2.6.35-rc3
+ Regression: Yes
+ RelatedPackageVersions: linux-firmware 1.37
+ Reproducible: Yes
+ Tags: maverick graphics regression-potential needs-upstream-testing
+ Uname: Linux 2.6.35-6-generic x86_64
+ UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
+ dmi.bios.date: 10/13/2009
+ dmi.bios.vendor: LENOVO
+ dmi.bios.version: 7UET79WW (3.09 )
+ dmi.board.name: 7417CTO
+ dmi.board.vendor: LENOVO
+ dmi.board.version: Not Available
+ dmi.chassis.asset.tag: No Asset Information
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: LENOVO
+ dmi.chassis.version: Not Available
+ dmi.modalias: dmi:bvnLENOVO:bvr7UET79WW(3.09):bd10/13/2009:svnLENOVO:pn7417CTO:pvrThinkPadT400:rvnLENOVO:rn7417CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
+ dmi.product.name: 7417CTO
+ dmi.product.version: ThinkPad T400
+ dmi.sys.vendor: LENOVO

** Attachment added: "AcpiTables.txt"
   http://launchpadlibrarian.net/52542175/AcpiTables.txt

-- 
Thinkpad T400: kslowd processes take to much CPU, making mouse control impossible
https://bugs.launchpad.net/bugs/609113
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