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Joel_Mckay
Posts: 295
Joined: Mon Nov 12, 2012 10:22 pm
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Dec 2013 Raspbian Wheezy firmware update often hangs system

Fri Jan 03, 2014 1:24 am

tried with new Stable kernel & firmware, and hangs in around 24 hours

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sudo apt-get update
sudo apt-get upgrade
tried with Head kernel & firmware, and hangs in around 16 hours

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sudo rpi-update
tried downgrading the kernel back, and still hangs in around 16 hours

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>uname -a
Linux blueberrypi 3.6.11+ #474 PREEMPT Thu Jun 13 17:14:42 BST 2013 armv6l GNU/Linux
Log files do not show kernel error, but this was dropped to the terminal. :?

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kernel:[ 5704.708329] Internal error: Oops: 7 [#1] PREEMPT ARM
 kernel:[ 5704.761995] Process RTW_CMD_THREAD (pid: 9281, stack limit = 0xdc6c21b0)
 kernel:[ 5704.763878] Stack: (0xdc6c3f30 to 0xdc6c4000)
 kernel:[ 5704.765716] 3f20:                                     d2c4bdd8 dc6c2000 a0000013 dc728a00
 kernel:[ 5704.769292] 3f40: e0fa84a0 e0fa84ac bf1187b0 c762be04 00000000 e0fa7000 bf1187b0 00000000
 kernel:[ 5704.772838] 3f60: 00000000 00000000 00000000 c003ca1c dc6c2000 00000000 000000f8 e0fa7000
 kernel:[ 5704.776458] 3f80: 00000000 dc6c3f84 dc6c3f84 00000000 dc6c3f90 dc6c3f90 dc6c3fac c762be04
 kernel:[ 5704.780094] 3fa0: c003c978 00000000 00000000 c000db58 00000000 00000000 00000000 00000000
 kernel:[ 5704.783743] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 kernel:[ 5704.787391] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
 kernel:[ 5704.799295] Code: 9a00005a e59f01b8 e59f11ac e59f21ac (e7952002) 
disabled the wifi module, rebooted, and still hangs in around 16 hours

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>sudo nano /etc/modprobe.d/raspi-blacklist.conf
blacklist rtl8192cu
I rolled back to Jun 13 release backup, and the problem seems to vanish.
As the /var/log files do not capture any error/warning prior to the hangs, it is very tricky to trace the issue for a reproducible bug report.

Any insights from other users may be helpful in identifying the issue(s).
:ugeek:

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