cannot resume after wakup

[Mark Baas]

Binary package hint: linux-source-2.6.24

Hi,
Since I started using hardy alpha 6, i cannot wake up the machine after suspend. It wakes and then i get a black screen.
I have fglrx and rt2x00 with which there were problems, however these unloaded still give me problems. I have no log i can show. The pm-suspend.log does not show anything about resuming. At first i thought it had to do with pm-utils, but now on hardy i installed the kernel from gutsy 2.6.22-14 and i can suspend and wakeup without problems.
So i think it is a kernel problem. Probably i just get a cpu lockup on wakeup. To reboot normally you have press the off button for like 3 seconds, now it takes like 10 seconds (like put in BIOS, if i recall correctly).
I provided my lspci -vv output.
I run a Packard Bell MZ057.

[Mark Baas (mark-baas123)]

Here is also my output of lsmod

[Alastair M. Robinson (robinsonb5)]

Same issue here on an HP/Compaq 6720s - Celeron M540 processor running Hardy 64-bit.

Suspend seems to go fine, but the machine won't resume. The power light comes on correctly but the machine freezes with a blank screen, backlight off, the caps lock light won't toggle when caps-lock is pressed, and the machine won't respond to network pings. I have to hold down the power button for several seconds to turn the machine off.

The selfsame machine running Gutsy suspends and resumes correctly except that the backlight occasionally doesn't come back on, and I have to use the brightness function keys to bring it back.

[Luke12 (luca-venturini)]

Try out suspending from the command line using the following command:

sudo pm-suspend

I found out that while the command used in hardy for suspending is just this, if used "graphically" and therefore without root privileges, it causes the laptop not to resume (even if it wakes up). However, using the command above fixes it! Gonna report it soon, ASA I have tried out with freshly updated pm-utils... ;)

[Leann Ogasawara (leannogasawara)]

Hi Guys,

Alastair, care to open a new bug report. The symptom of this particular bug, failure to Suspend/Resume, is specific to the hardware used. So while you may have the same symptom it should be reported as a separate bug. We can easily mark bugs as duplicates later on if necessary.

Mark, care to take a look at https://wiki.ubuntu.com/DebuggingKernelSuspend and attach your dmesg output after an attempted suspend/resume cycle as outlined there. Thanks.

[Alastair M. Robinson (robinsonb5)]

@Luke12: Worth a try, but makes no difference here.

@Leann: Not a problem, have done so, thanks.

[Mark Baas (mark-baas123)]

Leann:
I got the information. I included the dmesg.
Although i believe you want to know this:
[ 20.145752] PM: Resume from disk failed.
[ 20.145778] registered taskstats version 1
[ 20.145898] Magic number: 0:731:661
[ 20.145902] hash matches /build/buildd/linux-2.6.24/drivers/base/power/main.c:76
[ 20.145961] hash matches device ptyec
[ 20.146043] hash matches device PNP0C0A:00

I have no clue which devices those are.

[Mark Baas (mark-baas123)]

So... what more can i do?

[Mark Baas (mark-baas123)]

Is anyone still looking into this??
I tried with the newest kernel (2.6.24-13), still ain't working.

[Leann Ogasawara (leannogasawara)]

Hi Mark,

Sorry for the delayed response. I'm reassigning to the kernel team. Thanks.

[Mark Baas (mark-baas123)]

Ubuntu kernel team, is anyone looking at the bug?? newest kernel 2.6.24-15 not working either.
Please give me something i can try work on.

[Mark Baas (mark-baas123)]

Vanilla Kernel 2.6.25-rc8 works without problems. Thanks Ubuntu for your help, i have fixed it myself again. You help is useless, you can put this bug up your ass! I never have gotten any reaction, so why would i file a bug, you don't help me anyway.

[Leann Ogasawara (leannogasawara)]

Just for anyone interested, the upcoming Intrepid Ibex 8.10 kernel was most recently rebased with the upstream 2.6.25 kernel is currently available in the following PPA:

https://edge.launchpad.net/~kernel-ppa/+archive

If you are not familiar with how to install packages from a PPA basically do the following . . .

Create the file /etc/apt/sources.list.d/kernel-ppa.list to include the following two lines:

deb http://ppa.launchpad.net/kernel-ppa/ubuntu hardy main
deb-src http://ppa.launchpad.net/kernel-ppa/ubuntu hardy main

Then run the command: sudo apt-get update

You should then be able to install the linux-image-2.6.25 kernel package. After you've finished testing you can remove the kernel-ppa.list file and run 'sudo apt-get update' once more. Thanks.

[Pat Double (patdouble)]

Leann:

I did not see a package for linux-restricted-modules in the PPA. This bug reports includes a reference to fglrx, which is in the restricted modules, and of which I am also using. Without the restricted modules I cannot properly test this kernel to see if resume works. Is there another PPA that has it, or can it be included ?

[Manuel McLure (manuel-mclure)]

I'm seeing exactly this same behavior on my Dell Inspiron 5100 with Hardy. Unfortunately, the PPA seems to be gone. I'm currently downloading and will build 2.6.25.5 vanilla kernel in the hopes that it will fix the problem.

[Manuel McLure (manuel-mclure)]

2.6.25.5 does suspend and resume without problems. This is either a 2.6.24 bug or a problem with the Ubuntu kernel patches.

[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.