Hello list, I have an "Avermedia A835B(1835)" USB DVB-T stick (07ca:1835) which works only (very) sporadically. It's pure luck as far as I can see. I can't reproduce how to get it working. There are no special steps that I can take to guarantee that it'll work once I plug it in. I'd rate my chances of having the device actually working between 5 and 10 percent. In the log everything looks fine, apart from the messages at the bottom about the device not being able to get a lock on a channel. Reception here is really good, so there's no problem with signal strength. When loading the device in Windows 7 64 bit it always finds a lock. Has anybody any idea? Thanks for any suggestions! Jun 10 14:18:07 meiner kernel: usb 1-2: new high-speed USB device number 2 using xhci_hcd Jun 10 14:18:07 meiner kernel: WARNING: You are using an experimental version of the media stack. Jun 10 14:18:07 meiner kernel: As the driver is backported to an older kernel, it doesn't offer Jun 10 14:18:07 meiner kernel: enough quality for its usage in production. Jun 10 14:18:07 meiner kernel: Use it with care. Jun 10 14:18:07 meiner kernel: Latest git patches (needed if you report a bug to linux-media@xxxxxxxxxxxxxxx): Jun 10 14:18:07 meiner kernel: bfd0306462fdbc5e0a8c6999aef9dde0f9745399 [media] v4l: Document timestamp buffer flag behaviour Jun 10 14:18:07 meiner kernel: 309f4d62eda0e864c2d4eef536cc82e41931c3c5 [media] v4l: Copy timestamp source flags to destination on m2m devices Jun 10 14:18:07 meiner kernel: 599b08929efe9b90e44b504454218a120bb062a0 [media] exynos-gsc, m2m-deinterlace, mx2_emmaprp: Copy v4l2_buffer data from src to dst Jun 10 14:18:07 meiner kernel: experimental: a60b303c3e347297a25f0a203f0ff11a8efc818c experimental/ngene: Support DuoFlex C/C2/T/T2 (V3) Jun 10 14:18:07 meiner kernel: v4l-dvb-saa716x: 052c468e33be00a3d4d9b93da3581ffa861bb288 saa716x: IO memory of upper PHI1 regions is mapped in saa716x_ff driver. Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_af9035: prechip_version=83 chip_version=02 chip_type=9135 Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_v2: found a 'Avermedia A835B(1835)' in cold state Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_v2: downloading firmware from file 'dvb-usb-it9135-02.fw' Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_af9035: firmware version=3.42.3.3 Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_v2: found a 'Avermedia A835B(1835)' in warm state Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer Jun 10 14:18:07 meiner kernel: DVB: registering new adapter (Avermedia A835B(1835)) Jun 10 14:18:07 meiner kernel: i2c i2c-0: af9033: firmware version: LINK=0.0.0.0 OFDM=3.29.3.3 Jun 10 14:18:07 meiner kernel: usb 1-2: DVB: registering adapter 0 frontend 0 (Afatech AF9033 (DVB-T))... Jun 10 14:18:07 meiner kernel: i2c i2c-0: tuner_it913x: ITE Tech IT913X successfully attached Jun 10 14:18:07 meiner kernel: usb 1-2: dvb_usb_v2: 'Avermedia A835B(1835)' successfully initialized and connected Jun 10 14:18:07 meiner kernel: usbcore: registered new interface driver dvb_usb_af9035 Jun 10 14:18:28 meiner vdr: [1653] VDR version 2.0.4 started Jun 10 14:18:28 meiner vdr: [1653] switched to user 'vdr' Jun 10 14:18:28 meiner vdr: [1653] codeset is 'UTF-8' - known Jun 10 14:18:28 meiner vdr: [1653] loading plugin: /usr/lib64/vdr/plugins/libvdr-softhddevice.so.2.0.0 Jun 10 14:18:28 meiner vdr: New default svdrp port 6419! Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/setup.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/sources.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/diseqc.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/scr.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/channels.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/timers.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/commands.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/reccmds.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/svdrphosts.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/remote.conf Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/keymacros.conf Jun 10 14:18:29 meiner vdr: [1653] DVB API version is 0x050A (VDR was built with 0x050A) Jun 10 14:18:29 meiner vdr: [1653] frontend 0/0 provides DVB-T with QPSK,QAM16,QAM64 ("Afatech AF9033 (DVB-T)") Jun 10 14:18:29 meiner vdr: [1653] found 1 DVB device Jun 10 14:18:29 meiner vdr: [1653] initializing plugin: softhddevice (0.6.1rc1): Ein Software und GPU emulieres HD-Gerät Jun 10 14:18:29 meiner vdr: [1653] setting primary device to 2 Jun 10 14:18:29 meiner vdr: [1653] SVDRP listening on port 6419 Jun 10 14:18:29 meiner vdr: [1653] setting current skin to "lcars" Jun 10 14:18:29 meiner vdr: [1653] loading /etc/vdr/themes/lcars-default.theme Jun 10 14:18:29 meiner vdr: [1653] starting plugin: softhddevice Jun 10 14:18:30 meiner vdr: [1653] switching to channel 2 Jun 10 14:18:30 meiner lircd-0.9.0[1219]: accepted new client on /var/run/lirc/lircd Jun 10 14:18:30 meiner lircd-0.9.0[1219]: zotac initializing '/dev/usb/hiddev0' Jun 10 14:18:31 meiner kernel: nvidia 0000:02:00.0: irq 46 for MSI/MSI-X Jun 10 14:18:31 meiner vdr: [1653] connect from 127.0.0.1, port 59159 - accepted Jun 10 14:18:31 meiner vdr: [1653] closing SVDRP connection Jun 10 14:18:31 meiner vdrwatchdog[1702]: Starting vdrwatchdog Jun 10 14:18:39 meiner vdr: [1674] frontend 0/0 timed out while tuning to channel 2, tp 818 Jun 10 14:19:43 meiner vdr: [1674] frontend 0/0 timed out while tuning to channel 2, tp 818 Kind regards, Sebatian -- 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