[linux-dvb] Consistent kernel crash on latest hg repo with 2.6.24-rc6
Erik van Zijst
linux-dvb at erik.prutser.cx
Thu Jan 3 13:33:46 CET 2008
It turned out the problem was in the external PCI adaptor I'm using to
increase the (rather limited) number of legacy 32-bit PCI slots in my
server system through a PCI-Express slot
Although the card did get properly detected, it was very unstable,
constantly crashing the kernel. I've removed the external PCI expansion
box, plugged the card directly in the only on-board PCI slot and now it
works perfectly stable.
Lessons learned: don't buy these external PCI expansion boxes.
Erik van Zijst wrote:
> Erik van Zijst wrote:
>> So far all tests have been done using 64 bit distro's and kernels.
> I've just tried a fresh, vanilla 32-bit Ubuntu 7.10 install (kernel
> 2.6.22-14), but this still exhibits the same kernel freeze (albeit after
> a bit more time).
> Could this somehow be a firmware issue, or should a firmware or badly
> behaving card never crash the driver?
>> Erik van Zijst wrote:
>>> Hi folks,
>>> Since I installed a TechnoTrend 1500 Budget (with optional budget-ci CAM
>>> board), my kernel crashes completely everytime I run a frequency scan
>>> using the w_scan utility. There's no kernel panic message or anything
>>> printed to the tty, just instant death.
>>> The server box (dual quadcore Xeon) ran perfectly stable until I
>>> installed the T-1500 last week, and still runs stable as long as I don't
>>> use the card.
>>> I started out using a stock 2.6.22-something kernel (vanilla Fedora 8
>>> and Ubuntu 7.10 server), then switched to 2.6.24-rc6 (generated at
>>> 2007-12-21) and finally tried today's trunk of
>>> http://linuxtv.org/hg/v4l-dvb using hg, on top of my 2.6.24-rc6 kernel.
>>> Yet, every combination dies.
>>> The kernel usually dies the first time "w_scan -x"
>>> (http://wirbel.htpc-forum.de/w_scan/index2.html version 20071209) is run
>>> and then usually dies near the end when w_scan prints "tune to:".
>>> Occasionally it takes more than one run before it crashes. The box is
>>> idle during the scan and there's no other PCI activity.
>>> I'm using firmware dvb-fe-tda10046.fw, installed using get_dvb_firmware.
>>> Erik van Zijst
>>> linux-dvb mailing list
>>> linux-dvb at linuxtv.org
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