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Old 09-12-2014, 03:04 PM   #1
lancerm
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Costant Panic attacks in Ubuntu then Debian


Dear all,

I am reaching the end of my tether here.
I have a Desktop which Ubuntu 12.04, then it started crashing with this message "panic occurred switching back to text console". This happened several times after I had booted and in the middle of watching a youtube video or surfing the net. It became unbearable.

So I installed Ubuntu 14.04, and it happened again several times, with this message:
"40036.610960 panic occurred switching back to text console"

It happened so many times that I thought there must be a problem with Ubuntu, so I switched to Debian.

Guess what? It now keeps happening again on Debian.
These are the two messages which I have received so far
273.948002 panic occurred switching back to text console
24999.544002 panic occurred switching back to text console

They all happen well after I have entered the system.

I am not very technical. Please help me. What should I do?
 
Old 09-12-2014, 08:40 PM   #2
smallpond
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Post what details you know about your hardware. What type of video controller if you know this.
 
Old 09-12-2014, 08:44 PM   #3
astrogeek
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It is very likely a hardware failure or hardware related issue.

Can you post the output of lspci (type that in a terminal window), or tell the make/model of the computer (not quite as helpful).
 
Old 09-12-2014, 08:56 PM   #4
k3lt01
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Ok so it happens in both Ubuntu and Debian. What version of Debian?
Quote:
Originally Posted by lancerm View Post
"40036.610960 panic occurred switching back to text console"
273.948002 panic occurred switching back to text console
24999.544002 panic occurred switching back to text console
The numbers in bold are, to me, a time stamp. The first one (in Ubuntu) is 40036 seconds after you booted the machine.
The 2nd and 3rd (in Debian) are 273 and 24999 seconds after you booted the machine. So it appears from these 3 there is no correlation with time in the events.

Please do as smallpond asks and give us as much information about your hardware as is humanly possible.

Also let us know if you are doing the same thing when this happens or if it just happens regardless of what you are doing. Looking for patterns in what triggers the panic may lead us to a package that has a bug. You do mention watching YouTube or surfing the net but is this what you are doing every time, or even the majority of the time, it happens?

My gut feeling is hardware related but until we know more we can't discount software.

Last edited by k3lt01; 09-12-2014 at 08:57 PM.
 
Old 09-12-2014, 09:47 PM   #5
btmiller
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In particular, it is necessary to know about your graphics hardware and which GPU drivers you are using, but please provide complete hardware information as far as you know it. It looks like a problem with your graphics system. It sounds like watching videos in YouTube was a trigger, so some details about your browser and flash plug-in would be useful.
 
Old 09-13-2014, 06:37 AM   #6
lancerm
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info required

Dear colleagues, I tried to get hold of the info which you requested. I have listed them below.

1. video controller

00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

2. output of lspci (type that in a terminal window)

lspci
00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 01)
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)
01:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)


3. make/model of the computer

I bought it from a local shop.

Here are the hardware details:

MemTotal: 2025640 kB
/dev/sda:

Model=ST500DM002-1BD142, FwRev=KC45, SerialNo=Z2AKF377
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=16384kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-4,5,6,7

signifies the current active mode
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 23
Stepping: 10
CPU MHz: 3067.385
BogoMIPS: 6134.97
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 2048K
NUMA node0 CPU(s): 0,1


4. which version of debian

Linux debian 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux
Debian GNU/Linux 7 \n \l

5. graphics hardware and which GPU drivers

00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03)


6. under which circumstances such crashes happened

The crashes happened during watching videos, and sometimes just surfing.
Additional info: I also remember that before the computer starting having these panics, the computer was sometimes becoming slow and while surfing the net CPU would overload. It would seriously struggle. To the point that I had to wait until the load on the CPU was reduced to continue working. So could it be RAM related?

Thank you in advance for your help.
Please let me know if you need any other info from me.
 
Old 09-13-2014, 11:36 AM   #7
keefaz
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Did you look inside? Does it look clean from dust? (especially around the cpu heatsink)
 
Old 09-13-2014, 11:43 AM   #8
DavidMcCann
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Get out your installation disk and use the boot option to run a memory test. Kernel panics at random moments can indicate bad RAM.
 
Old 09-13-2014, 12:42 PM   #9
btmiller
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Looks like a pretty standard system to me. Based on my own experience, overheating is not likely to cause panics, but it will cause problems (e.g. the machien shutting itself off under heavy load), so periodically a good cleaning is a necessity. It looks like you're using an older onboard Intel graphics controller. It's possible something has gone a bit flaky with it. I'd try checking the memory as DavidMcCann suggests. If that doesn't reveal the problem, you might want to acquire and test a cheap discrete video card and see if the problem still occurs.
 
Old 09-14-2014, 12:54 PM   #10
lancerm
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Thank you friends.
I did memtest. It ran 5 times and there was no error found.
Then the test got stuck!
Should I retry again or are 5 tests enough?
 
Old 09-14-2014, 12:59 PM   #11
astrogeek
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Quote:
Originally Posted by lancerm View Post
Thank you friends.
I did memtest. It ran 5 times and there was no error found.
Then the test got stuck!
Should I retry again or are 5 tests enough?
memtest + stucktest = failedtest
 
Old 09-14-2014, 01:02 PM   #12
lancerm
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Dear Astrogeek,

Does your reply "memtest + stucktest = failedtest" mean
1 - there is a problem with RAM
or
2- Run the memtest again?
Thanks
 
Old 09-14-2014, 01:09 PM   #13
astrogeek
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Quote:
Originally Posted by lancerm View Post
Dear Astrogeek,

Does your reply "memtest + stucktest = failedtest" mean
1 - there is a problem with RAM
or
2- Run the memtest again?
Thanks
Sorry, I did not intend to be cryptic.

Yes, a failed memtest, even a stuck memtest, would most likely indicate a memory failure. You might want to run it again as confirmation.

Memtest runs from memory, so to be able to test all memory it must relocate itself during the test and subsequently test the memory where it had been running from. The fact that it got stuck most likely indicates that it was copied incorrectly (memory error) or that the new spot it was running from became corrupted (memory error).

I would suggest running it again. In fact, it is not uncommon for memtest to successfully complete many passes before failure. I generally leave it running at least overnight. It might not fail the same way each time, memory errors can be a little ghostly at times. But any error or failue to run would indicate a memory sub-system problem.

Last edited by astrogeek; 09-14-2014 at 01:13 PM. Reason: tpos, typs, typos...
 
  


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