2015-11-04, 17:42
For anyone having TV problems:
Try a USB device with USB bridge chip Cypress CY68013 (DVBSKY S960 or similar for DVB-S/S2) or Cypress CY7C68013A-56LTXC (DVBSKY T330 or similar for DVB-C/T/T2) and the boot string boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 dwc_otg.fiq_fsm_mask=0xF quiet. I.e. any device supported by the dvbsky.c driver. These devices appear to use bulk instead of isosynchronous on their USB endpoints and presumably that's why they work better with the primitive USB implementation of RPi/RPi2 (when I say primitive I mean compared to EHCI/xHCI standards). Also use TVHeadend 4.1-776~gd3e541d since latest appear to have a bug with the web interface.
My transport stream dropouts have gone down dramatically from 2-5 per minute to 2-3 per hour and now I can watch cable HD channels for hours on end and with little interruption from decoding artifacts introduced by missing packets. All other devices I have tried were unstable under OE on RPi2, specifically anything with Empia em28xx chips for USB.
For anything with a PCIe slot, use the "prosumer" Digital Devices cards, you won't regret it. It will save you a lot of time wasted on USB device and driver fiddling.
To add: From build 1101 to 1102 DVB broke for me completely:
Nov 04 19:32:17 RPI2 tvheadend[714]: mpegts: 450MHz in Kabel Deutschland - scan no data, failed
Try a USB device with USB bridge chip Cypress CY68013 (DVBSKY S960 or similar for DVB-S/S2) or Cypress CY7C68013A-56LTXC (DVBSKY T330 or similar for DVB-C/T/T2) and the boot string boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 dwc_otg.fiq_fsm_mask=0xF quiet. I.e. any device supported by the dvbsky.c driver. These devices appear to use bulk instead of isosynchronous on their USB endpoints and presumably that's why they work better with the primitive USB implementation of RPi/RPi2 (when I say primitive I mean compared to EHCI/xHCI standards). Also use TVHeadend 4.1-776~gd3e541d since latest appear to have a bug with the web interface.
My transport stream dropouts have gone down dramatically from 2-5 per minute to 2-3 per hour and now I can watch cable HD channels for hours on end and with little interruption from decoding artifacts introduced by missing packets. All other devices I have tried were unstable under OE on RPi2, specifically anything with Empia em28xx chips for USB.
For anything with a PCIe slot, use the "prosumer" Digital Devices cards, you won't regret it. It will save you a lot of time wasted on USB device and driver fiddling.
To add: From build 1101 to 1102 DVB broke for me completely:
Nov 04 19:32:17 RPI2 tvheadend[714]: mpegts: 450MHz in Kabel Deutschland - scan no data, failed
