suspend to ram is not working on Asus U36JC and U35JC notebooks

[Petr Dlouhý]

Binary package hint: acpi

Suspend to ram is not working on Asus U36JC and U35JC notebooks. It is probably caused by problems in USB modules. This problem is present in Ubuntu Maverick and Nattay.
Functional workaround can be found at http://robbyx.net/blog/?p=190

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: acpi (not installed)
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
Architecture: amd64
CheckboxSubmission: 4c3a0145220348e366d02efaed27e66e
CheckboxSystem: b8f3ec504801f13fc208edb5c785b099
Date: Thu Mar 17 11:56:33 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
ProcEnviron:
 LANGUAGE=cs_CZ:en
 PATH=(custom, user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
SourcePackage: acpi
UpgradeStatus: No upgrade log present (probably fresh install)

[pauljohn32 (pauljohn32)]

I have Lenovo T61 and have a new "fail to suspend" problem

I have no trouble with previous kernels,

2.6.35-25-generic

But the new one causes the symptom of a lock-up while suspending. The Lenovo as a moon shaped LED that flashes during suspend, and the system is not responsive, but the screen stays lit up, mouse can move cursor, but flashing LED keeps flashing forever.

[Michael Rydén (zynex)]

On my Asus U36JC, suspend to RAM worked on Kubuntu 10.10, but not with 11.04. There is a script on how to turn off the USB-busses, but it fails anyway. The script worked on 10.10.

When suspending, the screen goes blank for about 5-10 sec (back light still there thou), then resumes again.

[Petr Dlouhý (petr-dlouhy)]

Workaround mentioned in the description works for me on 11.04.

[Walter Walden Jr (plastercraftsman)]

I had the same problem on my Dell Dimension 4700. I used the ubuntu software center to install uswsusp and this worked for me. I also had the same problem on my laptop and uswsusp fixed that to. no more problems with suspend or hibernate.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[jtlb (jt-lb)]

This happens even with the USB workaround with 12.10 while it used to work with earlier versions. Is there any special informations I can provide to help ?

[Jouko Vesterinen (jvester)]

That workaround link does not work: http://robbyx.net/blog/?p=190
Is there any other links?