2011/9/24 Jin Kazama <jin.ml@xxxxxxxxx>: > On 9/24/11 12:06 AM, Antti Palosaari wrote: >> >> On 09/24/2011 12:06 AM, Jin Kazama wrote: >>> >>> Hello, >>> I've been testing af9015/tda18218 based usb DVB-T tuners on a 2.6.39.4 >>> kernel with the latest v4l drivers avaiable (from git). >>> When I'm using a single USB module, (listed as /dev/dvb/adapter0), >>> everything works fine. >>> When I'm plugging another module, at first it looks like everything's ok >>> (/dev/dvb/adapter1) and if I try to use this module while the adapter0 >>> is not been used, it works - but if try to use both modules at the same >>> time, I get garbage output on both cards (error: warning: discontinuity >>> for PID... with dvblast on both cards. >>> Does anyone have any idea on how to fix this problem? >> >> Feel free to fix it. I am too busy currently. >> > Well, it looks like if I put 2 devices on different USB buses (on the same > machine), they work fine, but if they're on the same USB bus, I get the > problem... > I think the driver may get raw data from the USB bus - and the way it > identifies the device is not the proper way (I have 2 exactly identical > devices) => when both devices send data, the driver catches all the data > from the bus, which is a corrupt mix of both streams...) > Unfortunately, I don't think that I'm capable of fixing the problem by > myself, I don't even know which part of the driver to look for... if someone > can give me a hint, I might *try* to *attempt* to fix it :)... > -- > 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 > Hello, I have similar problem, I have a dual tuner and they don't work together: # i2cdetect -l i2c-0 smbus SMBus nForce2 adapter at 4d00 SMBus adapter i2c-1 i2c cx23885[0] I2C adapter i2c-2 i2c cx23885[0] I2C adapter i2c-3 i2c cx23885[0] I2C adapter i2c-4 i2c NVIDIA i2c adapter 0 at 3:00.0 I2C adapter i2c-5 i2c NVIDIA i2c adapter 2 at 3:00.0 I2C adapter i2c-6 i2c NVIDIA i2c adapter 3 at 3:00.0 I2C adapter i2c-7 i2c KWorld PlusTV Dual DVB-T Stick (DVB-T 399U) I2C adapter i2c-8 i2c KWorld PlusTV Dual DVB-T Stick (DVB-T 399U) I2C adapter I can not change the USB bus, because they are on the same physical device.I have no idea how to fix it but I am ready to test all fixes. I read some Antti posts on how to is designed the af9015 dual demod: http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg36821.html http://palosaari.fi/linux/v4l-dvb/controlling_tuner_af9015_dual_demod.txt Is there any tool to check the i2c errors? Thanks for all your work and best regards. -- Josu Lazkano -- 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
