Apologies for missing out on any conventions in this post but I'm pretty new to Linux and lists. I have posted this same message to the video4linux-list@xxxxxxxxxx list but this list got recommended as being a better one. I have a Nebula Electronics PCI DVB-T (Zarlink MT352) card running on an Asus AM2 mobo, has been working just fine for a couple of months on Fedora Core 6 but possibly after an automatic update to kernel-2.6.18-1.2798.fc6.x86_64 but I'm not sold that this was the cause, it now only works for anything between 5 minutes to an hour before the picture freezes. If I modprobe -r dvb_bt8xx followed by modprobe dvb_bt8xx I buy myself some more time however on occasions the removal of dvb_bt8xx has caused the machine to hang. I do normally use MythTV but uninstalled it and installed Kaffeine to make testing a bit easier, and that displays the video just fine albeit I have noticed the sound gradually going out of sync. I have since updated to 2.6.19-1 but with no change in behaviour. when checking the dmesg output after the picture freeze it complains that it cannot write to various registers on the DVB card. The PC has a small partition with Windows XP (for testing) and that has no problems with the card at all, running happily for days ruling out a hardware problem with the DVB card. I really do not know where to go next, and feel really frustrated by my lack of under the hood Linux knowledge. Tried to rollback the previous kernel, forward and a cartwheel, still the same, a bit of relevant output from dmesg that might cause a passing soul to have a lightbulb moment: Linux video capture interface: v2.00 bttv: driver version 0.9.16 loaded bttv: using 8 buffers with 2080k (520 pages) each for capture eth0: forcedeth.c: subsystem: 01043:816a bound to 0000:00:14.0 i2c_adapter i2c-0: nForce2 SMBus adapter at 0x4c00 i2c_adapter i2c-1: nForce2 SMBus adapter at 0x4c40 EDAC MC0: Giving out device to k8_edac Athlon64/Opteron: DEV 0000:00:18.2 shpchp: Standard Hot Plug PCI Controller Driver version: 0.4 bttv: Bt8xx card found (0). ACPI: PCI Interrupt Link [APC2] enabled at IRQ 17 ACPI: PCI Interrupt 0000:04:09.0[A] -> Link [APC2] -> GSI 17 (level, low) -> IRQ 17 bttv0: Bt878 (rev 17) at 0000:04:09.0, irq: 17, latency: 32, mmio: 0xfdaff000 bttv0: detected: Nebula Electronics DigiTV [card=104], PCI subsystem ID is 0071:0101 bttv0: using: Nebula Electronics DigiTV [card=104,insmod option] bttv0: gpio: en=00000000, out=00000000 in=00ffffcb [init] bttv0: using tuner=-1 bttv0: registered device video0 bttv0: registered device vbi0 bttv0: PLL: 28636363 => 35468950 .. ok bttv0: add subdevice "dvb0" input: bttv IR (card=104) as /class/input/input2 bttv-input: bttv IR (card=104) detected at pci-0000:04:09.0/ir0 lsmod | grep dvb: dvb_bt8xx 27461 6 dvb_core 101105 1 dvb_bt8xx bt878 21001 1 dvb_bt8xx dvb_pll 25157 1 dvb_bt8xx bttv 224309 2 dvb_bt8xx,bt878 i2c_core 34369 10 i2c_ec,mt352,nxt6000,dvb_bt8xx,nvidia,dvb_pll,bttv ,i2c_algo_bit,tveeprom,i2c_nforce2 lspci: 04:09.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) 04:09.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) As soon as the picture freezes I get this from dmesg, same line repeated about fifety times: mt352_read_register: readreg error (reg=0, ret==-5) If it did not work full stop, great, something to look for, but work and then stop is not easy to track down and I have run out of ideas so would really appreciate any help in where to look or even a direction to head in. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.411 / Virus Database: 268.17.21/665 - Release Date: 02/02/2007 _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
