Karmic slow boot

Bug #405270 reported by Ubuntu4life
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This bug affects 1 person
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Bug Description

ABOUT ME AND MY COMPUTER;
I'm Dutch and 15 years old so sorry for my bad English and I'm pretty new with Linux coding. I could miss some important information or investigation info results, please ask them if you need so...
I have an home-made game computer and I've installed Karmic Koala alpha 3 on it and updated with the "stable" updates. I'm using the 2.6.31-4 kernel but I've also noticed the following problem on the 2.6.30 kernels. I've never done something weird with Ubuntu parameters and settings or whatever.

THE PROBLEM;
Ubuntu starts good until about 9-10 seconds, but stays there for 50 seconds. After that he finishes the boot in 2-3 seconds.
I don't think that's normal... Is it?

THE THINGS I'VE TRIED
I've detached all external devices and booted again, same results. So I've ran bootchart an I get a graph but it doesn't make any sense to me, I've attached the graph. I've ran lspci and dmesg in the terminal but the only thing I see that could be the problem are the
"Buffer I/O error on device fd0" lines but that doesn't say anything to me either. I don't even know what the device fd0 is perhaps anyone can tell me?

WHAT I SUSPECT THE PROBLEMS COULD BE;
*When I start Ubuntu in a tekst based mode I see; "Buffer I/O error on device fd0" a couple of times after each other. Perhaps there's the problem...
*I have an onboard Intel video card. Perhaps that's conflicting with my Nvidia GTX 260 graphics card (with installed driver)...
*I could have a bad Ubuntu install....

THE FIX;
I don't know. I'm a kind of stuck here. I hope you guys can fix it or tell me what might could be the problem.

I've attached the lspci and dmesg output in 1 file and the bootchart graph in the other.
If you need more info please ask. And please say it to me if I'm doing stupid things.
Good luck.

Revision history for this message
Ubuntu4life (jeroenmerks) wrote :
description: updated
description: updated
Revision history for this message
Ubuntu4life (jeroenmerks) wrote :
description: updated
Revision history for this message
ianst (janko-js) wrote :

I observe similar symptoms on my Sony Vaio notebook. I installed every version of Ubuntu since 6.x. Now I upgraded to Karmic using update-manager and booting got at least two minutes longer, or maybe more.

As far as I understand, the reason in my case is the following:

- the notebook has one bay in which either DVD drive device or a floppy drive device can be inserted.

- I keep DVD drive in the bay

- during booting, the BIOS reports the existence of the floppy

- something in Ubuntu recognizes that floppy as a device exists and wants to access it

- that same thing doesn't want to let booting continue before the floppy answers!

- floppy never answers.

$ tail syslog
Aug 6 00:00:15 mu3 ntfs-3g[3011]: Mount options: rw,nosuid,nodev,uhelper=devkit,silent,allow_other,nonempty,default_permissions,relatime,fsname=/dev/sda1,blkdev,blksize=4096
Aug 6 00:00:23 mu3 ntfs-3g[3011]: Unmounting /dev/sda1 (DRV4_VOL1)
Aug 6 00:02:57 mu3 kernel: [ 187.104030] eth0: no IPv6 routers present
Aug 6 00:02:57 mu3 kernel: [ 236.668071] Clocksource tsc unstable (delta = -102510018 ns)
Aug 6 00:02:57 mu3 kernel: [ 259.875599] end_request: I/O error, dev fd0, sector 0
Aug 6 00:02:57 mu3 kernel: [ 298.075393] end_request: I/O error, dev fd0, sector 0
Aug 6 00:02:57 mu3 kernel: [ 298.075425] Buffer I/O error on device fd0, logical block 0
Aug 6 00:02:57 mu3 kernel: [ 336.267437] end_request: I/O error, dev fd0, sector 0
Aug 6 00:02:57 mu3 kernel: [ 336.267469] Buffer I/O error on device fd0, logical block 0
Aug 6 00:02:57 mu3 kernel: [ 374.459417] end_request: I/O error, dev fd0, sector 0

Revision history for this message
ianst (janko-js) wrote :

I've discovered today:

https://bugs.launchpad.net/linux/+bug/384579

and somebody there proposed this:

echo "blacklist floppy" | sudo tee /etc/modprobe.d/blacklist-floppy.conf && sudo rmmod floppy && sudo update-initramfs -u

I had to run that twice, first run resulted in an error message "floppy in use", after the second run and the restart the booting was fast as pre-karmic. So it's certain now that a floppy handling made a delay. I think that this bug can be considered a duplicate of 384579.

Revision history for this message
Ubuntu4life (jeroenmerks) wrote :

to ianst,

I ran the command and I hope it will work.
As far as I can see is the bug 384579 the same, so do i need to delete this bug or something?

The only thing why I reported this bug is because I want to help linux virgins.
I knew there was most probably a simple command fix but that is not simple enough for beginners.
I hope the command isn't needed in the future.

Cheers.

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