At Sun, 10 Sep 2006 20:04:30 -0400, Dan Pritts wrote: > > Hi - > > I have a Centos 4.3 system with a wintv pci card with FM tuner: > > 00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 Video > Capture (rev 02) > 00:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev > 02) > > As of kernel 2.6.14, I was able to use this card to record FM radio. > > Updating to 2.6.17.4, it broke (but I didn't notice for a few weeks until > I went to listen to recordings). Updating to 2.6.17.13 does not fix it. > > All I get out of the card now is soft static. > > I have checked with alsamixer and the card is not muted. > > I can reboot with the old kernel and it works fine. > > Here's my /etc/modprobe.conf (nothing relevant): > > alias eth0 e100 > alias char-major-89 i2c-dev > alias eth1 e100 > alias char-major-81 bttv > > In case it's not obvious, I have a kernel.org kernel, not the > centos/redhat kernel, on this box. > > The video4linux interface to this card appears to be working - I can use > the FM tuner applications to control the tuner, and it indicates signal > quality, stereo (or not), etc., as i would expect. > > I use this to do the recording: > > fm 89.1 33000 > sox -t ossdsp -c 2 -r 44100 /dev/dsp1 -t wav > > I just tried today to get it working with arecord, which I had never > used before. I wasn't successful even with 2.6.14 but I didn't try > very hard to divine the appropriate syntax. > > I diffed the bt87x.c files between the kernel versions and noticed lots > of changes, mostly calling "struct" explicitly and new hardware > sense info. However, I did notice: > > < static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol, > < struct snd_ctl_elem_info *info) > > > static int snd_bt87x_capture_source_info(snd_kcontrol_t *kcontrol, > snd_ctl_elem_info_t *info) > > snd_kcontrol replaces snd_kcontrol_t. Looks like there are no references > to snd_kcontrol_t anywhere in the new kernel's source tree so this is > probably a simple global change but i thought i'd mention it. > > help!
You need to check whether it's a regression in ALSA part or not. One option is to try the later alsa-driver package on 2.6.14 kernel. If it works, the problem is in other parts. If not, you can try to earlier version of ALSA package in a bisect manner. Takashi ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
