Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 08-26-2011, 06:17 AM   #1
LQ Newbie
Registered: Jun 2011
Posts: 11

Rep: Reputation: Disabled
irqpoll being ignored


I did a clean install of LMDE which ships with 2.6.32 kernel. I had to pass irqpoll option via grub (modified /etc/default/grub to make it default) for things to work properly on my system, the culprit being a 3Ware 9690 RAID card it seems. All was well, except the performance of the RAID card was about half what it is under Windows.

Anyway, after an apt-get dist-upgrade later, and onward to kernel 2.6.39, irqpoll is no longer working.

My /etc/default/grub still has it as the default, I re-ran update-grub, and have also manually specified it via grub at the command line during boot.

# cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
Nothing works. Almost immediately after boot, I get the "irq ignored' warning, and "try using irqpoll" message. And my system is slower than a turtle. Takes about 10 minutes to boot instead of 20 seconds.

At this point, I've tried everything but not been able to get irqpoll to work (not be ignored) on 2.6.39. I'm running 2.6.32 again.

How do you determine if irqpoll is actually enabled (without looking at grub menu), but say after you are booted at shell.

That would be the basis for establishing what is happening, I would think.

Some help please?
Old 08-26-2011, 07:33 AM   #2
LQ Newbie
Registered: Jun 2011
Posts: 11

Original Poster
Rep: Reputation: Disabled
I duplicated this using as well. If I do a 'dmesg | grep irqpoll', it confirms the linux cmdline contains irqpoll, yet I also see the "try enabling irqpoll" error message, and my system is so slow it is completely unusable (took 10 minutes just to get to login prompt).

Back to 2.6.32, and works fine.

Hoping someone can help. I don't want to be stuck on 2.6.32 forever.
Old 08-31-2011, 01:57 AM   #3
LQ Newbie
Registered: Jun 2011
Posts: 11

Original Poster
Rep: Reputation: Disabled
If anyone has ideas, I could really use some help. I don't want to be stuck on 2.6.32 forever.
Old 10-26-2011, 01:19 PM   #4
LQ Newbie
Registered: Oct 2011
Posts: 1

Rep: Reputation: Disabled
I don't have a fix for your problem, yet, but I can tell you you're not alone; I think it's a regression in the kernel. From 2.6.39 on, irqpoll has stopped working for me, too. I have filed an Ubuntu bug: is still down, so I can't go there. I've emailed the maintainer and the kernel list. I haven't heard back there, yet; I think it can take several tries. I'm trying to learn more about the bug, and logging it at the bug page above. If you want to look in, or contribute, please do!

Good luck, to both of us.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
irqpoll/noapic SI_TW Linux - Hardware 3 07-29-2009 03:53 PM
what does irqpoll do ? centguy Linux - Software 2 12-19-2008 08:57 PM
irqpoll slows computer down a lot worldgnat Linux - Software 2 07-23-2007 06:57 PM
p4p800 sata irqpoll candyman123 Linux - Hardware 0 03-18-2006 01:45 PM
How to boot with irqpoll? Quill Ubuntu 2 08-18-2005 11:36 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 02:04 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration