Hi, I have been having some difficulties getting my DVICO dual digital 4 (rev1) working with recent kernels, failing to tune and getting errors like the following kernel: [ 315.032076] dvb-usb: bulk message failed: -110 (4/0) kernel: [ 315.032080] cxusb: i2c read failed and making the machine very slow as documented at https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/459523 Using the v4l-dvb tree, I was able to bisect the issue down to http://linuxtv.org/hg/v4l-dvb/rev/7276a5854219 At first I though I could workaround the issue by setting no_poweroff=1, but that did not work. The following diff did however resolve the issue. diff -r 43878f8dbfb0 linux/drivers/media/common/tuners/tuner-xc2028.c --- a/linux/drivers/media/common/tuners/tuner-xc2028.c Sun Nov 01 07:17:46 2009 -0200 +++ b/linux/drivers/media/common/tuners/tuner-xc2028.c Tue Nov 03 14:24:05 2009 +1100 @@ -1240,7 +1240,7 @@ .get_frequency = xc2028_get_frequency, .get_rf_strength = xc2028_signal, .set_params = xc2028_set_params, - .sleep = xc2028_sleep, + //.sleep = xc2028_sleep, #if 0 int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth); int (*get_status)(struct dvb_frontend *fe, u32 *status); This led me to dvb_frontend.c where I could see i2c_gate_ctrl() was being called if .sleep was non zero. Setting dvb_powerdown_on_sleep=0 worked around the issue by stoppign i2c_gate_ctrl() being called, so I suspect i2c_gate_ctrl() is triggering the issue somehow. Any thoughts on a proper solution for this issue? -Rob -- 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
