Slow to recover from suspend

[Tim Holy]

Since the latest upgrades for Hardy, my T60 laptop is much slower to wake up after suspending. Formerly it was a few seconds, now it's probably 30 seconds or so. This laptop has an ATI video card (I thought I'd mention it, as it's usually the problem...)

tim@diva:/tmp$ lsb_release -rd
Description: Ubuntu 8.04
Release: 8.04

tim@diva:/tmp$ uname -a
Linux diva 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 i686 GNU/Linux

dmesg & lspci output attached. (You'll note some weird stuff in there about the wireless; mostly the wireless works fine, but it shows occasional hiccups, especially after waking up. I'll look into a separate bug report for that, too.)

[Tim Holy (holy-wustl)]

This is still an issue post-release.

One extra note: while the computer is contemplating waking up (which it does reliably, just slowly most of the time), I see some console output at the top of the screen. First it starts out with a blinking underline cursor, then usually says that it's reloading the sshd configuration. Once, it repeated that a 2nd time. Occasionally, it instead prefers to chat about anacron (but I don't remember what it said it was doing).

There seem to be other users who are reporting similar issues: http://lwn.net/Articles/279111/#Comments

[Tim Holy (holy-wustl)]

More clues: if I switch the wireless killswitch to "off," waking up proceeds much faster. So it seems to have something to do with wireless or networking.

[Leann Ogasawara (leannogasawara)]

There hasn't been any recent activity in this bug report and we were wondering if this is still an issue? The Ubuntu kernel team is actively working on the upcoming Intrepid Ibex 8.10 release. If you could please test the latest Alpha release for Intrepid it would be much appreciated - http://www.ubuntu.com/testing . Please let us know your results. If the issue still exists, please also provide the appropriate debugging information as outlined at https://wiki.ubuntu.com/KernelTeamBugPolicies . Thanks in advance.

[Tim Holy (holy-wustl)]

It still affects me with Hardy.

I downloaded an Intrepid live CD, but I can't even suspend when running off the Live CD. Is there a way to test this on my laptop without installing an alpha release? It's my main "productive" machine. Can I just install a kernel package, or would I also need to upgrade HAL and many other packages?

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[Tim Holy (holy-wustl)]

I installed the 2.6.27-1-generic kernel by downloading the .deb via my webbrowser and installed it with dpkg. I did not install any other packages, if others are required please tell me which ones to install.

In addition to introducing a number of regressions, it did not solve the slow-to-recover from suspend problem: it still required about 40 seconds to wake from suspend, even though the wireless was also never set up properly with this kernel.

Since the wireless wasn't working, I couldn't browse to the "Filing kernel bugs" page to see what data to collect, but I did as much as I could remember. Several files are attached.

[Tim Holy (holy-wustl)]

Hi,

On Thursday 28 August 2008, Leann Ogasawara wrote:
> More importantly, please
> open a new bug report for each new bug/regression introduced by the
> 2.6.27 kernel and tag the bug report with 'linux-2.6.27'.

Launchpad won't allow me to use linux-2.6.27 as a package hint. Only 2.6.26.

--Tim

[peddy (peddy22)]

Still happening in 2.6.27-6-generic (beta 1), it seems that the HDDs spin crazily for 5 seconds, then normal resume continues over the course of about 7 more seconds.

[gervin23 (gervin23)]

I can confirm this behaviour on a T60 and can without a doubt say it's due to the iwl3945 driver. Bug 275227 is similar. The workaround for me as been to blacklist iwl3945 for a successful boot then modprobe it.

[gervin23 (gervin23)]

Whoops, wrong thread. Apologies.

[Tim Holy (holy-wustl)]

I just tried apt-get removing avahi-autoipd, but that did not make the wakeup faster (it was approximately 45 seconds).

[Tim Holy (holy-wustl)]

I did a full upgrade to intrepid-beta (not just the kernel), and now my laptop wakes up quickly.

[Leann Ogasawara (leannogasawara)]

Thanks for the note Tim. Since you are the original bug reporter I'm marking this "Fix Released" for Intrepid. For anyone else who after fully upgrading as Tim did still has issues, please open a new report. Thanks.

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.