Arch Linux

giova

Member

Registered: 2014-05-11

Posts: 8

Random kernel panic

Hello! I have reinstalled arch linux at least three times this weekend because of this issue.
I have random kernel panic (i know this because REISUB doesn't work)

[p3s3us@fenix ~]$ lspci
00:00.0 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:00.1 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:00.2 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:00.3 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:00.4 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:00.5 PIC: VIA Technologies, Inc. CN896/VN896/P4M900 I/O APIC Interrupt Controller
00:00.6 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Security Device
00:00.7 Host bridge: VIA Technologies, Inc. CN896/VN896/P4M900 Host Bridge
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237/VX700 PCI Bridge
00:02.0 PCI bridge: VIA Technologies, Inc. CN896/VN896/P4M900 PCI to PCI Bridge Controller (rev 80)
00:03.0 PCI bridge: VIA Technologies, Inc. CN896/VN896/P4M900 PCI to PCI Bridge Controller (rev 80)
00:0f.0 IDE interface: VIA Technologies, Inc. Device 5337 (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 07)
00:10.0 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.1 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.2 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.3 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.4 USB controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237A PCI to ISA Bridge
00:11.7 Host bridge: VIA Technologies, Inc. VT8237/8251 Ultra VLINK Controller
00:13.0 Host bridge: VIA Technologies, Inc. VT8237A Host Bridge
00:13.1 PCI bridge: VIA Technologies, Inc. VT8237A PCI to PCI Bridge
02:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 630] (rev a1)
02:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
04:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
04:07.0 Communication controller: Conexant Systems, Inc. HSF 56k HSFi Modem (rev 01)
80:01.0 Audio device: VIA Technologies, Inc. VT8237A/VT8251 HDA Controller (rev 10)

In the journal I can't find anything useful - nothing but routine messages (at least right before panic)

EDIT:

[p3s3us@fenix ~]$ uname -a
Linux fenix 3.14.3-1-ARCH #1 SMP PREEMPT Tue May 6 22:44:19 CEST 2014 x86_64 GNU/Linux
[p3s3us@fenix ~]$

Last edited by giova (2014-05-12 12:22:36)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,676

Re: Random kernel panic

First, I would verify that it is a panic by ensuring that the keyboard LEDs are blinking.
What are you doing when it happens?  Does it happen only with X running?
You might try blacklisting drivers (modules) for non-essential hardware.

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clfarron4

Member

From: London, UK

Registered: 2013-06-28

Posts: 2,175

Website

Re: Random kernel panic

Is this with the core kernel as well?

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giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

@ewaller keyboard leds aren't blinking, I think is a kernel related issue because reisub doesn't work. If I hit caps lock nothing happens.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,676

Re: Random kernel panic

@ewaller keyboard leds aren't blinking, I think is a kernel related issue because reisub doesn't work. If I hit caps lock nothing happens.

Then it is, in all likelihood,  not a panic.  As a sanity check, does the Magic SysReq stuff work when the kernel has not gone off to la-la land?
Can you ping your box when this happens?  Can you perhaps log in via ssh when this happens?  Any chance your disk access LED's are lit when this happens?

BTW, I don't mean that the kernel is not fully locked up.  I am just saying that it is not a panic -- unless it is so hosed that it cannot even figure out how to twiddle those LEDs.

Last edited by ewaller (2014-05-12 15:19:34)

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giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

@ewaller
No, magic sysrq doesn't work. I have to try the other things.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,676

Re: Random kernel panic

@ewaller
No, magic sysrq doesn't work. I have to try the other things.

Be advised, On Arch, you must enable SysRq shortcuts before you need them.
https://wiki.archlinux.org/index.php/Keyboard_Shortcuts

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The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
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giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

@ewaller yes, i knew that.
Anyway, when the PC locks no SSH/ping.
EDIT: Disk led isn't lit. So I don't think is a disk issue. Even the CPU isn't involved (it happens randomly)

Last edited by giova (2014-05-12 20:31:20)

ConnorBehan

Package Maintainer (PM)

From: Long Island NY

Registered: 2007-07-05

Posts: 1,359

Website

Re: Random kernel panic

Does this happen when X is not running? Random hangs are usually fixed after one release so I would use an older kernel.

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giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

@ConnorBehan yes, it can happen also when X is not running. I even tried the LTS kernel (with nvidia-lts of course)
I'll try to downgrade to another version and see if it works

giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

Anyone?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,676

Re: Random kernel panic

Empty bumps are not helpful.  At least, tell us what has happened and what you have tried  since your last post.  We are sure you are not just waiting for help from us; you must still be pursuing the solution.

Anyway, at this point, I would look at the modules that are loaded with lsmod, and look at the hardware in your hwinfo, and would start blacklisting the drivers for hardware you can live without.  See if any particular driver makes it unstable.

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
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How to Ask Questions the Smart Way

giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

I updated the kernel and disabled a "auto PCI clock" flag in the BIOS. That increased A LOT uptime (from a few minutes to a hour) but still crashes are happening.

giova

Member

Registered: 2014-05-11

Posts: 8

Re: Random kernel panic

Changed nvidia ti nouveau, still hangs. So I don't think it's a driver issue.
EDIT: Tried with nmi_watchdog=1 and nmi_watchdog=2. Still hangs.

Last edited by giova (2014-05-17 17:26:44)

ConnorBehan

Package Maintainer (PM)

From: Long Island NY

Registered: 2007-07-05

Posts: 1,359

Website

Re: Random kernel panic

Bisecting is the classic (if time consuming) way to fix this. Is there an old kernel where the hangs don't occur?

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