Ubuntu
linux-meta package

Suspend to RAM does not work with 4 GB of RAM.

Bug #156079 reported by Sun
4
Affects Status Importance Assigned to Milestone
acpi-support (Baltix)
Invalid
Undecided
Unassigned
acpi-support (Ubuntu)
Invalid
Undecided
Unassigned
linux-meta (Ubuntu)
Invalid
Undecided
Unassigned

Bug Description

I have a Gigabyte GA-K8N Pro-SLU motherboard with a 64-bit CPU with 4 GB of DDR-400 RAM installed and I am running a 64-bit version of Ubuntu 7.10 Gutsy.

The BIOS by default have support for 4 GB of RAM turned off. While it is turned off, the Ubuntu is able to access a little bit more than 3 GB of installed RAM. In this case Suspend works out of the box, it just works.

However, when I turned on 4 GB RAM support in the BIOS, Suspend to RAM cease to work. It seems to be able to suspend - the fans are turned off and such, but when I try to wake it up it just reboots. I have tried to play around with POST_VIDEO and other options in /etc/default/acpi-support, but were not able to make it work until I turn off 4 GB RAM support in the motherboard BIOS.

Now, I have no ideas if this is a OS problem or hardware... so I want to ask if anyone have any experience with this, like if there are some BIOS options that need to be turned on? In power management(BIOS) I have turned on STR(S3).

Thanks.

$ uname -a
Linux bed 2.6.22-14-generic #1 SMP Sun Oct 14 21:45:15 GMT 2007 x86_64 GNU/Linux

Revision history for this message
Sun (sunnzy) wrote :
Revision history for this message
Sun (sunnzy) wrote :
Revision history for this message
Sun (sunnzy) wrote :

Typo.

Changed in acpi-support:
status: New → Invalid
Revision history for this message
TerryG (tgalati4) wrote :

Triaged to Incomplete. This is certainly an edge case, but 4 GB machines will be more common in the future. I presume that you have a 4.5 GB swap drive? During the suspend process the contents of RAM is compressed and it's possible that the thread that compresses the snapshot of RAM either runs out of swap or RAM or address space. If the compression algorithm can't handle a 4 GB file size (due to a bug or kernel limitation) then that would cause a malformed suspend image.

Changed in linux-meta:
status: New → Incomplete
Revision history for this message
TerryG (tgalati4) wrote :

Triaged to Incomplete for reasons given under linux-meta bug filing.

Changed in acpi-support:
status: New → Incomplete
Revision history for this message
Chris Coulson (chrisccoulson) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with latest Ubuntu release? Thanks in advance.

Revision history for this message
Chris Coulson (chrisccoulson) wrote :

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!

Changed in linux-meta:
status: Incomplete → Invalid
Changed in acpi-support:
status: Incomplete → Invalid
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.