[ATrpms-users] kernels -nt 2.6.10-1.770_FC3 cause system to lock when loading bt878 module

[xjosh at xjosh.com]

Hi. 

On my mythtv backend system running FC3 (using an optimized mythtv rpm 
rebuilt from atrpms source, not that I expect that to matter), attempting 
to boot with any kernel newer than 2.6.10-1.770_FC3 will cause the system 
to lock hard (requiring big red button) when the bt878 module is loaded. 
I'm asking here because the behaviour starts at 
kernel-2.6.10-1.770_14.rhfc3.at and newer. Darn near the same kernel, 
right? I've looked at a diff of the config files from both kernel sources 
and although I'm certainly no expert on the matter, I can't see anything 
that stands out as being a likely culprit. 

The BT878 device in question here is a Twinhan 1020 (Red) DVB-S card. When 
the card is removed all is well. I've tried installing the 
linuxtv-dvb-kmdl appropriate for the kernel I'm trying and no difference. 
I've got a few of these Twinhan cards and swapping them and the slot that 
they are in does not seem to matter.

Can anyone offer any advise?

[root at snowball ~]# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host 
Bridge (rev 01)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800 
South]
00:09.0 Network controller: Techsan Electronics Co Ltd B2C2 FlexCopII DVB 
chip / Technisat SkyStar2 DVB card (rev 02)
00:0a.0 Ethernet controller: Marvell Technology Group Ltd. Yukon Gigabit 
Ethernet 10/100/1000Base-T Adapter (rev 13)
00:0b.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link 
Layer Controller (rev 01)
00:0c.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 
400] (rev b2)
00:0d.0 Multimedia video controller: Brooktree Corporation Bt878 Video 
Capture (rev 11)
00:0d.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture 
(rev 11)
00:0e.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID 
Controller (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 81)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 81)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 81)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 81)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800 
South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. 
VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Miscellaneous Control
[root at snowball ~]# uname -a
Linux snowball.xjosh.com 2.6.10-1.770_FC3 #1 Thu Feb 24 18:09:38 EST 2005 
x86_64 x86_64 x86_64 GNU/Linux
[root at snowball ~]# rpm -qa | grep ^kernel
kernel-utils-2.4-13.1.49_FC3
kernel-2.6.9-1.667
kernel-2.6.11-1.14_FC3
kernel-2.6.10-1.770_FC3
kernel-2.6.10-1.770_14.rhfc3.at
[root at snowball ~]# cat /etc/modprobe.conf
alias scsi_hostadapter sata_via
alias eth1 skystar2
remove snd-via82xx { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; 
/sbin/modprobe -r --ignore-remove snd-via82xx
alias char-major-81 bttv
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd
install bttv /sbin/modprobe --ignore-install bttv && { /sbin/modprobe 
dvb-bt8xx; /bin/true; }
# nvidia kernel module
alias char-major-195 nvidia-1_0-7174
alias nvidia nvidia-1_0-7174
alias eth0 sk98lin
alias snd-card-0 snd-via82xx
options snd-card-0 index=0
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx && 
/usr/sbin/alsactl restore >/dev/null 2>&1 || :
alias ieee1394-controller ohci1394
options dvb_core dvb_shutdown_timeout=0
options bt878 verbose=1 bt878_debug=1
options bttv i2c_hw=1
[root at snowball ~]# rpm -qa | grep kmdl
nvidia-graphics7174-kmdl-2.6.11-1.14_FC3-1.0_7174-68.rhfc3.at
lirc-kmdl-2.6.10-1.770_FC3-0.7.1-46.rhfc3.at
linuxtv-dvb-kmdl-2.6.11-1.14_FC3-1.1.1cvs20050228-9.rhfc3.at
linuxtv-dvb-kmdl-2.6.10-1.770_FC3-1.1.1cvs20050228-9.rhfc3.at
nvidia-graphics7174-kmdl-2.6.10-1.770_FC3-1.0_7174-68.rhfc3.at
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