[Bug 544954] Re: [lucid] floppy causes high cpu iowait usage

[Wenzhuo Zhang]

** Description changed:

  Binary package hint: linux-image
  
  I upgraded my ThinkPad X32 notebook to Lucid beta last weekend. The
  notebook does not have a floppy drive, but the floppy kernel module
  causes very high cpu iowait usage for about 20 minutes after reboot. At
  the same time, it keeps issuing error messages as follows:
  
  [ 1123.553851] Buffer I/O error on device fd0, logical block 0
  [ 1136.618649] end_request: I/O error, dev fd0, sector 0
  
- Reproducible in 2.6.32-16-generic and 2.6.32-17-generic.
+ Reproducible in 2.6.32-16-generic, 2.6.32-17-generic, 2.6.32-22-generic
+ and the upstream kernel 2.6.34rc7.
  
  Manually removing(rmmod) and loading(modprobe) the floppy module later
  cannot reproduce the problem.
  
- One workaround is to blacklist the floppy kernel module.
+ Work-arounds:
+ 1. blacklist the floppy kernel module.
+ 2. disable Legacy Floppy Drive in ThinkPad BIOS.
  
- 
- --- 
+ ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: i386
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  wenzhuo    1498 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  wenzhuo    1498 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
-  Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 11'
-    Mixer name	: 'Analog Devices AD1981B'
-    Components	: 'AC97a:41445374'
-    Controls      : 26
-    Simple ctrls  : 18
+  Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 11'
+    Mixer name	: 'Analog Devices AD1981B'
+    Components	: 'AC97a:41445374'
+    Controls      : 26
+    Simple ctrls  : 18
  Card29.Amixer.info:
-  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 1QHT23WW-1.08'
-    Mixer name	: 'ThinkPad EC 1QHT23WW-1.08'
-    Components	: ''
-    Controls      : 2
-    Simple ctrls  : 1
+  Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 1QHT23WW-1.08'
+    Mixer name	: 'ThinkPad EC 1QHT23WW-1.08'
+    Components	: ''
+    Controls      : 2
+    Simple ctrls  : 1
  Card29.Amixer.values:
-  Simple mixer control 'Console',0
-    Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
-    Playback channels: Mono
-    Limits: Playback 0 - 14
-    Mono: Playback 0 [0%] [on]
+  Simple mixer control 'Console',0
+    Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
+    Playback channels: Mono
+    Limits: Playback 0 - 14
+    Mono: Playback 0 [0%] [on]
  DistroRelease: Ubuntu 10.04
  HibernationDevice: RESUME=UUID=5e4fc5f4-fe53-4b3c-9743-552d18a38bc2
  MachineType: IBM 2672AEC
  Package: linux (not installed)
  PccardctlIdent:
-  Socket 0:
-    no product info available
-  Socket 1:
-    no product info available
+  Socket 0:
+    no product info available
+  Socket 1:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    no card
-  Socket 1:
-    no card
+  Socket 0:
+    no card
+  Socket 1:
+    no card
  ProcCmdLine: root=UUID=46aacfd3-26dd-438e-a50d-5d8951d49614 ro quiet splash
  ProcEnviron:
-  LANG=en_US.utf8
-  SHELL=/bin/bash
+  LANG=en_US.utf8
+  SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
  Regression: No
  RelatedPackageVersions: linux-firmware 1.34
  Reproducible: Yes
  RfKill:
-  
+ 
  Tags: lucid  needs-upstream-testing
  Uname: Linux 2.6.32-22-generic i686
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  WpaSupplicantLog:
-  
+ 
  dmi.bios.date: 09/22/2005
  dmi.bios.vendor: IBM
  dmi.bios.version: 1QET97WW (3.02 )
  dmi.board.name: 2672AEC
  dmi.board.vendor: IBM
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: IBM
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnIBM:bvr1QET97WW(3.02):bd09/22/2005:svnIBM:pn2672AEC:pvrThinkPadX32:rvnIBM:rn2672AEC:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
  dmi.product.name: 2672AEC
  dmi.product.version: ThinkPad X32
  dmi.sys.vendor: IBM

-- 
[lucid] floppy causes high cpu iowait usage
https://bugs.launchpad.net/bugs/544954
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