On Mon, Aug 25, 2008 at 1:28 AM, Markus Rechberger <[EMAIL PROTECTED]> wrote: >> Date: Sun, 24 Aug 2008 19:58:35 -0300 >> Subject: New driver em28xx-audioep >> I tested the new driver em28xx-audioep with Kaiomy TVnPC U2 (this device is >> similar to Kworld 300U) and now it's working perfectly. >> >> But to get it working, I had to disable OSS Mixed API and OSS PCM API from >> alsa driver. If it is enabled, em28xx-audioep crashes with the following >> stack trace: >> >> [<ffffffff804b87c1>] ? snd_pcm_open_substream+0x46/ >> 0x88 >> [<ffffffff80551a64>] ? mutex_lock+0xd/0x1e >> [<ffffffff804b88d4>] ? snd_pcm_open+0xd1/0x1ee >> [<ffffffff8023bac0>] ? default_wake_function+0x0/0xe >> [<ffffffff804ad323>] ? snd_lookup_minor_data+0x47/0x4f >> [<ffffffff804ad6a0>] ? snd_open+0xe8/0x151 >> [<ffffffff80292e28>] ? chrdev_open+0x154/0x189 >> [<ffffffff80292cd4>] ? chrdev_open+0x0/0x189 >> [<ffffffff8028eec5>] ? __dentry_open+0x124/0x23b >> [<ffffffff8029a41b>] ? do_filp_open+0x3b7/0x78d >> [<ffffffff8028ec01>] ? get_unused_fd_flags+0x71/0x115 >> [<ffffffff8028eceb>] ? do_sys_open+0x46/0xca >> [<ffffffff8022030a>] ? system_call_after_swapgs+0x8a/0x8f >> >> My kernel is 2.6.26-gentoo and the options I disabled are: >> >> Device Drivers ---> Sound ---> Advanced Linux Sound Architecture ---> < > >> OSS Mixer API >> Device Drivers ---> Sound ---> Advanced Linux Sound Architecture ---> < > >> OSS PCM (digital audio) API >> Device Drivers ---> Sound ---> Advanced Linux Sound Architecture ---> [ ] >> OSS PCM (digital audio) API - Include plugin system (NEW) >> >> > > I can confirm this, also the other em28xx-audio.ko module is affected > by this problem. >
the solution for this is that I'll work on a minimalistic audio driver which is independent of alsa and oss. That way the em28xx driver will never depend on any alsa version nor oss version anymore and properly work on all systems without having to fiddle around (especially ubuntu). Markus _______________________________________________ Em28xx mailing list [email protected] http://mcentral.de/mailman/listinfo/em28xx
