Il 07/02/2012 06:10, Andrej Podzimek ha scritto: >>> Hello, >>> >>> this USB stick (07ca:a835) used to work fine with the 3.0 and 3.1 kernel >>> series, using one of the howtos in this thread: >>> http://forum.ubuntu-it.org/index.php/topic,384436.msg3370690.html >>> >>> However, there were some build errors with my current kernel 3.2.4, so I >>> tried to update the entire media tree instead, as described here: >>> http://git.linuxtv.org/media_build.git >>> >>> Unfortunately, the device doesn't work. These are the dmesg messages >>> that appear after plugging the receiver in: >>> >>> >>> Surprisingly, the tda18218 module doesn't load automatically (I guess it >>> should) and loading it manually doesn't help. So the device doesn't get >>> initialized at all and there are no messages about firmware loading. >>> (The firmware file is in /lib/firmware, of course.) >>> >>> Is it possible to make the device work somehow? The receiver worked fine >>> with older kernels (using the howto from ubuntu-it.org linked above) and >>> the remote controller was usable as well. >>> >> >> Hi Andrej, >> here you can find an updated version of the af9035 patch: >> >> http://openpli.git.sourceforge.net/git/gitweb.cgi?p=openpli/openembedded;a=blob_plain;f=recipes/linux/linux-etxx00/dvb-usb-af9035.patch;hb=HEAD >> >> >> There are several improvements, including support for newer kernels (3.2 >> and 3.3) as well as the current media_build tree. >> I also added the missing "select" directives for the tda18218 and >> mxl5007T tuners, so the modules auto-loads correctly now. >> >> In this version there is no remote support. >> >> Please let me know if it works fine for you. >> >> Regards, >> Gianluca > > Hi Gianluca, > > the tuner seems to work now. I applied the patch directly to the 3.2.5 > kernel, without using the media_build tree. (Is this the correct > approach?) Unlike the previous versions of the driver, this one does not > keep the tuner hot when inactive. (There must have been a power > management issue that is already resolved.) > > This is what I see in dmesg: > > usb 3-1.2: new high-speed USB device number 9 using ehci_hcd > dvb-usb: found a 'Avermedia AverTV Volar HD & HD PRO (A835)' in cold > state, will try to load a firmware > dvb-usb: downloading firmware from file 'dvb-usb-af9035-01.fw' > dvb-usb: found a 'Avermedia AverTV Volar HD & HD PRO (A835)' in warm > state. > dvb-usb: will pass the complete MPEG2 transport stream to the > software demuxer. > DVB: registering new adapter (Avermedia AverTV Volar HD & HD PRO > (A835)) > af9033: firmware version: LINK:11.15.10.0 OFDM:5.48.10.0 > DVB: registering adapter 0 frontend 0 (Afatech AF9033 DVB-T)... > tda18218: NXP TDA18218HN successfully identified. > dvb-usb: Avermedia AverTV Volar HD & HD PRO (A835) successfully > initialized and connected. > usbcore: registered new interface driver dvb_usb_af9035 > > However, there are still some glitches. Sometimes the initialization fails: > > usb 3-1.2: new high-speed USB device number 8 using ehci_hcd > dvb-usb: found a 'Avermedia AverTV Volar HD & HD PRO (A835)' in cold > state, will try to load a firmware > dvb-usb: downloading firmware from file 'dvb-usb-af9035-01.fw' > af9035: bulk message failed:-71 (6/0) > af9035: firmware download failed:-71 > dvb_usb_af9035: probe of 3-1.2:1.0 failed with error -71 > > Unloading the dvb-t modules manually and re-plugging the tuner resolves > this. Furthermore, I had two kernel panics today. :-( They seem to occur > when the DVB-T signal is poor for a long time. Unfortunately, I didn't > have netconsole set up. > > An attempt to scan channels in Kaffeine always fails before the progress > bar reaches 20% and lots of messages like this appear in dmesg: > > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0047 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0047 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0045 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0048 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0047 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:002c > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0047 > af9035: recv bulk message failed:-110 > af9033: I2C read failed reg:0048 > > Fortunately, I have another DVB-T tuner (dvb_usb_af9015, MSI DigiVox > Mini II V3) that scans channels just fine, so I used that one to obtain > the list of channels. Once you have a list of channels, watching TV with > the AverTV Volar HD PRO (dvb_usb_af9035) seems to work fine. > > Andrej > Hi Andrej, thanks for the very detailed report. I'm happy that the driver seems to work a little better for you. Unfortunately I don't have the A835 (I have an A867 which uses a different tuner and it has no problem scanning channels or tuning weak signals) so there is no chance I can fix this problems. Probably the TDA18218 tuner is not managed properly in the driver. Gianluca -- 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
