Arch Linux

mr.phantom

Member

Registered: 2014-08-05

Posts: 6

hangs up on wake from suspend

Hi,
I am using arch with 3.15.8-1-ck kernel and my laptop does not resumes after i suspend it to the ram.When i put it to suspend, it suspends successfully and light on POWER-ON-OFF button starts blinking but when i resume it, it shows up the lock screen but mouse and keyboard does not works and the typing cursor also does not blinks.I tried opening tty's but they too are not opening up.
I have already installed pm-utils and here is the log file of pm-suspend : pm-suspend.log.
Moreover I have Lenovo Z510 laptop with KDE and graphic driver installed is x86-video-intel.
Pls help me regarding this issue.
Regards
Ashish Bansal

Awebb

Member

Registered: 2010-05-06

Posts: 6,311

Re: hangs up on wake from suspend

1. Where is that -ck kernel from?
2. Try unloading and loading the atkbd and psmouse modules upon resume. If you don't know how, try ssh'ing into your box from another device for testing purposes.
3. See if pm-utils is somehow the culprit by trying the systemd native suspend command (systemctl suspend).

mr.phantom

Member

Registered: 2014-08-05

Posts: 6

Re: hangs up on wake from suspend

@Awebb
I have installed linux kernel which is patched up with certain optimization patches like bfq and bfs.linux-ck

I have tried ssh'ing into the machine but ssh connection also hangs upon suspend and trying connecting it again gives
ssh: connect to host 10.0.0.2 port 22 : No route to host     which means that the host was not up

systemctl suspend also gave me same result

Regards
Ashish Bansal

Awebb

Member

Registered: 2010-05-06

Posts: 6,311

Re: hangs up on wake from suspend

Is that kernel from a repository or did you compile it yourself? Does it behave the same way with the stock kernel?

mr.phantom

Member

Registered: 2014-08-05

Posts: 6

Re: hangs up on wake from suspend

@Awebb
Yaa i have used kernel from the repository and  it hangs up on stock kernel too

Rob Wu

Member

Registered: 2014-03-19

Posts: 3

Re: hangs up on wake from suspend

I'm having the same issue: my laptop hangs after resuming from suspend. After lots of debugging, I found that ifplugd is the culprit to me.

Steps to reproduce:
1. Unplug my power and ethernet cable.
2. Suspend my system
3. Plug in my power and ethernet cable.
4. Turn on the laptop.

Result: The system hangs. After about 15 seconds, the fan starts spinning like crazy.

I have tried any combination of (un)plugging power and netwerk cables, and the hang only occurs in the situation that is described above. I have also run all tests with and without ifplugd, which confirms that the issue is really related to ifplugd.

I have experienced this issue for months, and my current kernel is 3.15.8-1-ARCH.

To solve the problem, either make sure that you don't trigger the above conditions (i.e. don't unplug before suspend or don't plug in cables before resuming) or remove ifplugd using

sudo pacman -R ifplugd

Last edited by Rob Wu (2014-08-12 16:02:26)

mr.phantom

Member

Registered: 2014-08-05

Posts: 6

Re: hangs up on wake from suspend

That package is not installed in my computer.
Btw can u tell me how you debugged and found the culprit on your computer??
Any log file or any other thing??

Regards
Ashish Bansal

Rob Wu

Member

Registered: 2014-03-19

Posts: 3

Re: hangs up on wake from suspend

I recall having had this issue before with ifplugd, and coincidentally noticed a pattern after having yet another hang. Then I tried to isolate the problem and arrived at the minimal steps-to-reproduce from my previous post. For me, the issue appears to be related to power management + network management (after a specific change in this combination, the ifplugd module caused a hang).

I suggest to try and isolate the problem in a similar way.

nostalgix

Member

From: Germany

Registered: 2012-04-05

Posts: 31

Website

Re: hangs up on wake from suspend

I am having the same issues but since I upgraded last week. So something has changed. Maybe it's just the kernel version. But I don't have ifplugd installed either and it does not make any difference if I switch between powercord or battery before.
In the logs I only see the message of successful suspend but none that anything failed on resume. First logmessage after the suspend is from the reboot...

EDIT: Downgraded to 3.15.7-1-ARCH and waking up the laptop works again.

Last edited by nostalgix (2014-08-18 19:34:45)

---

dotfiles and more @github

rafaleo

Member

From: Honduras

Registered: 2011-05-29

Posts: 13

Re: hangs up on wake from suspend

Same issue here. I don't have ifplugd installed in my system. Following nostalgix's advice I downgraded the linux kernel to the immediate version before (3.17.2-1-ARCH). Everything seems to be working now. Still trying to find a permanent fix for this. I'm using an Acer Aspire One D270 and the pm-suspend log looks identical to the one posted at the beginning of this thread.