Bug 732667

Summary:	openSUSE freezes randomly
Product:	[openSUSE] openSUSE 12.1	Reporter:	Christian Wansart <christian.wansart>
Component:	Kernel	Assignee:	E-mail List <kernel-maintainers>
Status:	RESOLVED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Critical
Priority:	P5 - None	CC:	bamoqi, Martin.Seidler
Version:	Final
Target Milestone:	---
Hardware:	All
OS:	openSUSE 12.1
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	737834

Description Christian Wansart 2011-11-24 16:55:05 UTC

User-Agent:       Opera/9.80 (X11; Linux x86_64; U; de) Presto/2.9.168 Version/11.52

On my Netbook, an ASUS EeePC 1201T openSUSE freezes randomly. I tried different apps trying to find out which application may cause the freeze. I tried KDE, Gnome, openSUSE 11.4 and 12.1 without any success.
Sometimes it runs hours and sometimes only a few minutes. It freezes and I can't do anything except for hard reboot.

Alt+Print+B doesn't work, Ctrl+F1 doesn't work either... I checked the Netbook for around 13 hours with memtest86+ without any warning about a broken RAM.

I ran the Netbook for almost a day without any problems so I think it might be problem with the Kernel but I'm not sure where to start the search for informations.

Reproducible: Sometimes

Steps to Reproduce:
1. Turn on and wait
Actual Results:  
The complete Netbook freezes and I can't do anything.

Expected Results:  
It shouldn't freeze.

Comment 1 Christian Wansart 2012-02-06 15:58:22 UTC

I rebuilt the latest Kernel 2.6.37.6-0.11 from openSUSE 11.4. Now it works again. No freeze. It also fixed the hibernate/standby problem. (With the 3.x Kernel, hibernate and standby led to a freeze too.)

Comment 2 Christian Wansart 2012-02-06 17:51:30 UTC

I was asked to add some additional information. The problem started with the 3.x Kernel which I tried out on my openSUSE 11.4 system last year. I tried it because I heard that it contained the wifi drivers for the EeePC 1201T.

I'm not sure what the exact version it was, but I'm sure it was lower than 3.1. Even with the latest kernel 3.1.9-1.4.1 it doesn't work.

I use the desktop variant, since "default" doesn't contain my wifi driver. I didn't test if the default kernel freezes my system too. (I'm afraid it will damage my HDD again.)

This thread is connected to my problem: http://forums.opensuse.org/english/get-technical-help-here/laptop/471256-cannot-hibernate-s2disk-4.html#post2437910

Comment 3 Christian Wansart 2012-02-08 12:23:20 UTC

I made some progress. I compiled the (vanilla) kernels 2.6.38.8, 2.6.39.4, 3.0.20 and 3.1. The last one caused my notebook to freeze. The ones before didn't freeze my notebook. So it has to be something that was added with Kernel 3.1.

This is how I compiled the sources:
> make localmodconfig
> make -j2 all
> sudo make modules_install install
> cd /boot && sudo /sbin/mkinitrd

I'd try to analyze this problem further, but I have no idea how to continue without any error output like a kernel panic.

Comment 4 Christian Wansart 2012-02-09 12:43:15 UTC

It seems that the problem is fixed since Kernel 3.2. I tested Kernel 3.1, 3.2, 3.3-rc2 and 3.3-rc3. Only with Kernel 3.1 the problem still occurs.

At least, the problem didn't occur yet and I hope that's final.

Comment 5 Moqi Ba 2012-02-11 19:43:03 UTC

I am using thinkpad x220 with osuse 12.1 and kernel 3.1.9 and 3.2.4. Both kernel versions have random freeze (SysRq keys don't work) that needs hard reset. Previously used osuse 11.4 and didn't had this problem. Nothing usually is running when the freezes happen.

I have "Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection" LAN controller and "Intel Corporation Centrino Advanced-N 6205" network Controller. 

Is this the same as https://bugzilla.novell.com/show_bug.cgi?id=737834 and https://bugs.launchpad.net/ubuntu/+source/linux/+bug/908335 ?