[lucid] floppy causes high cpu iowait usage

[Wenzhuo Zhang]

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, 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.

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
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
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
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]
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
PccardctlStatus:
 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
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

[Wenzhuo Zhang (wenzhuo)]

reproducible in 2.6.32-16-generic and 2.6.32-17-generic.

[Jeremy Foshee (jeremyfoshee)]

Hi Wenzhuo,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 544954

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Ivan Helguera (gokmar)]

I have a similar problem in the final edition of 10.04 on a thinkpad t42 system.
Not sure about processor use, but it throws floppy IO errors (no floppy drive ever present).
The system is *very* unstable. I've been using past Ubuntus on this lap since 8.04 or so, and had no problems whatsoever. I'll try to post more info.

[Ivan Helguera (gokmar)]

kernel update to .22 did not change it

[Ivan Helguera (gokmar)]

the problem disappeared after i disapled legacy floppy in bios (t42)

[Tekk (tekk)]

I have a similar problem. I haven't any floppy and I reinstalled from scratch the Amd64 version (I had the 32 bit version before) of Lucid and it seemed to work out until now. Suddendly, after a reboot, the system came to use 1,8 Gb of RAM where it used about 300 Mb before, and the CPU load rose from 0-1% to 15% when I'm not doing anything. In fstab there was... a floppy!!. I don't have a clue, that's for sure, but if there's any data I can gather that can be of help, just tell me how and I'll do it. Thanks a lot for your hard work BTW folks!.

[Wenzhuo Zhang (wenzhuo)]

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[Wenzhuo Zhang (wenzhuo)]

Tried the upstream kernel #020634rc7. It also has the problem.

[penalvch (penalvch)]

Whenzhuo Zhang, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command in the development release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please do not test the kernel in the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. As well, please comment on which kernel version specifically you tested.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream', and comment as to why specifically you were unable to test it.

Please let us know your results. Thanks in advance.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]