I have a pair of K-World ATSC 115 cards for my mythtv setup. They've worked without any problems for the last 2 years. My system uses Archlinux. Roughly a month ago, an upgrade to kernel 2.6.32.10 caused problems in which nxt200x doesn't initialize properly some of the time (no firmware getting downloaded), and thus there's no /dev/dvb directory getting created. I believe each card succeeds randomly about 1/3 of the time, so that came out to about 9 reboots to get both cards initialized properly. After that it worked fine. However, when I upgraded to 2.6.33.2 a couple of days ago, I got the same error messages, but the probability of getting a success firmware download is like 1 in 10. I haven't succeeded in getting both cards initialized at the same time. Furthermore, even though I can get one of the cards to initialize (seeing /dev/dvb/adapter0), it doesn't function. Tuner says locked but never returns a picture in mythtv. Here's the information when I do a lspci: 03:06.0 Multimedia controller: Philips Semiconductors SAA7131/SAA7133/SAA7135 Video Broadcast Decoder (rev d1) 03:07.0 Multimedia controller: Philips Semiconductors SAA7131/SAA7133/SAA7135 Video Broadcast Decoder (rev d1) This is the error from dmesg when init fails on a card: nxt200x: nxt200x_readbytes: i2c read error (addr 0x0a, err == -5) Unknown/Unsupported NXT chip: 00 00 00 00 00 saa7133[0]/dvb: frontend initialization failed Here's the message from a "successful" init (from error log since dmesg gets spammed with errors after it): Apr 10 13:00:19 ruyi kernel: nxt200x: NXT2004 Detected Apr 10 13:00:19 ruyi kernel: nxt2004: Waiting for firmware upload (dvb-fe-nxt2004.fw)... Apr 10 13:00:19 ruyi kernel: saa7134 0000:03:06.0: firmware: requesting dvb-fe-nxt2004.fw Apr 10 13:00:19 ruyi kernel: nxt2004: Waiting for firmware upload(2)... Apr 10 13:00:19 ruyi kernel: nxt2004: Firmware upload complete Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_readbytes: i2c read error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_writebytes: i2c write error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_writebytes: i2c write error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_writebytes: i2c write error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_writebytes: i2c write error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: nxt200x_readbytes: i2c read error (addr 0x0a, err == -5) Apr 10 13:00:19 ruyi kernel: nxt200x: Error writing multireg register 0x80 Then when I tried to tune to a channel it just spams the following error in dmesg forever while no picture gets shown: nxt200x: i2c_readbytes: i2c read error (addr 0x61, err == -5) nxt200x: Timeout waiting for nxt2004 to init. nxt200x: i2c_writebytes: i2c write error (addr 0x61, err == -5) nxt200x: error writing to tuner Please let me know if you want any additional logs. thanks Ben -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
