Ok, it took a while to get more time with this, as its been a busy week, but I finally did:
I also have more data on symptoms. First, on a cold boot, starting case seems to be semi-random. Sometimes by powering down and back up a few times, I'll get one tuner or the other to work (it does change halfs). The failure mode also varyies; sometimes I get perfect video with no audio, sometimes no video, and sometimes badly distorted video with no audio. I discovered that by unloading ivtv and cx25840 and reloading ivtv, the failure mode would change (sometimes better, sometimes worse). Also, at one point this week, "the card" stopped funcitoning all together (black screen on both inputs) without a module reload or power cycle (something not observed up to that point). And now, in the process of debugging, both halfs of the card came up OK one time (I have not been able to replicate that) Based on this and other facts, I suspect the card is good and have not pulled it. However, if it will be a useful test point, i can pull it and put it in the "old" system (old mobo, same HD image, etc. Different PSU). The only i2c module with debugging options was i2c_algo_bit, and turning on its debugging didn't generate any additional output (actually, I didn't really notice any additional output from any of the debugging). So....I'm at a loss as to what to do next....Suggestions? --Jim On Tue, Mar 18, 2008 at 7:45 PM, Andy Walls <[EMAIL PROTECTED]> wrote: > > Date: Mon, 17 Mar 2008 22:42:54 -0700 > > From: "Jim Kusznir" <[EMAIL PROTECTED]> > > > On Mon, Mar 17, 2008 at 5:57 PM, Andy Walls <[EMAIL PROTECTED]> wrote: > > > > I agree with Tyler that you probably have an i2c issue. You'll probably > > > need to turn on i2c_* module debugging parameters in /etc/modprobe.conf > > > to see what's really going on on the i2c bus. > > > > > > My kernel is different from yours, so find the i2c modules > > > under /lib/modules and do a modinfo on them to find their debugging > > > parameters. > > > > Any partular modules? > > > > [EMAIL PROTECTED]:/home/mythtv# lsmod |grep i2c > > i2c_algo_bit 12296 1 ivtv > > i2c_i801 11020 0 > > i2c_nforce2 10240 0 > > i2c_core 20864 15 > > > ivtv,saa7115,msp3400,tuner,tea5767,tda8290,tuner_simple,mt20xx,i2c_algo_bit,tveeprom,cx25840,nvidia,i2c_i801,wm8775,i2c_nforce2 > > Look for debug options available for the modules upon which ivtv and > cx25840 depend: i2c_algo_bit and i2c_core are the two in the above list. > > > -Andy > > > > > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel > _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
