On Wed, Jun 11, 2014 at 05:31:47AM +0000, Jason.Dong@xxxxxxxxxx wrote: > Dear Sebastian, > > There is a RF performance issue in the af9033 driver of kernel 3.15. > It is no problem in the it913x driver of kernel 3.14. There were some > initial sequences not correct after the it913x driver was integrated > into af9033 driver. > > BRs, Jason Hello Jason, Thank you very much for your reply! So I guess this RF performance issue is not yet fixed. I was using fairly recent media driver sources (linux-media-2014-05-26). I'm using kernel 3.10.42. This morning I rebuilt it from scratch, only relying on the in-kernel drivers instead of the experimental external ones. On the first try it worked fine. The (reported) signal strength was lower than with linux-media-2014-05-26. But no uncorrectable errors occurred. To test, I shut down the computer and cold started it with the USB stick attached. Unfortunately it failed. Maybe my USB stick and computer aren't meant to get along :-) ... Jun 11 09:28:03 meiner kernel: usb 1-2: new high-speed USB device number 2 using xhci_hcd ... Jun 11 09:28:03 meiner kernel: usbcore: registered new interface driver dvb_usb_it913x Jun 11 09:28:03 meiner kernel: it913x: Chip Version=02 Chip Type=9135 Jun 11 09:28:03 meiner kernel: it913x: Remote propriety (raw) modeit913x: Dual mode=0 Tuner Type=38 Jun 11 09:28:03 meiner kernel: it913x: Unknown tuner ID applying default 0x60<6>usb 1-2: dvb_usb_v2: found a 'Avermedia A835B(1835)' in cold state Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: downloading firmware from file 'dvb-usb-it9135-02.fw' ... Jun 11 09:28:03 meiner kernel: it913x: FRM Starting Firmware Download Jun 11 09:28:03 meiner kernel: it913x: FRM Firmware Download Completed - Resetting Device<6>usb 5-2: new low-speed USB device number 2 using uhci_hcd ... Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: it913x: FRM Device not responding to reboot Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110 Jun 11 09:28:03 meiner kernel: it913x: Failed to identify chip version applying 1 Jun 11 09:28:03 meiner kernel: it913x: FRM Failed to reboot device<6>usb 1-2: dvb_usb_v2: 'Avermedia A835B(1835)' error while loading driver (-19) Jun 11 09:28:03 meiner kernel: usb 1-2: dvb_usb_v2: 'Avermedia A835B(1835)' successfully deinitialized and disconnected ... Kind regards, Sebastian -- 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
