Description of problem: I am having problems that seem similar to Bug 144742, in that starting with kernel-2.6.10-1.8_FC2, sound is broken, but I can't figure out why. I have a Turtle Beach Vera Cruz sound card: 00:0e.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01) Subsystem: Voyetra Technologies: Unknown device 3357 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (1000ns min, 6000ns max) Interrupt: pin A routed to IRQ 10 Region 0: Memory at de000000 (32-bit, non-prefetchable) Region 1: Memory at dd800000 (32-bit, non-prefetchable) [size=1M] Capabilities: [40] Power Management version 2 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- When I use an application that generates sound (e.g., ogg123), the snd_cs46xx module correctly enables the device: Jan 22 22:30:20 shieldbreaker kernel: PCI: Enabling device 0000:00:0e.0 (0004 -> 0006) Jan 22 22:30:20 shieldbreaker kernel: ACPI: PCI interrupt 0000:00:0e.0[A] -> GSI 10 (level, low) -> IRQ 10 There are no other messages or errors, but there is simply no output to the speakers. If I boot kernel-2.6.9-1.11_FC2 instead of kernel-2.6.10-1.9_FC2 (both are installed at the moment), all the kernel messages are exactly the same, but I get sound. Per some of the comments in Bug 144742, I tried muting unnecessary channels. I also tried to see if any of the other outputs jacks (e.g., line out) were receiving a signal. But so far, I've been unable to discover any way to get sound. If you can think of something else to try, then I'm all ears. But otherwise, based on my experiences and the experiences of the people posting comments on Bug 144742, I suspect that sound is fundamentally broken starting with kernel-2.6.10-1.8_FC2.
2.6.10-1.9FC2smp broke my sound as well. It appears that the sound kernel modules aren't being loaded. KDE complains: Sound server informational message: Error while initializing the sound driver: device: default can't be opened for playback (No such device) The sound server will continue, using the null output device.Sound server informational message: Error while initializing the sound driver: device: default can't be opened for playback (No such device) The sound server will continue, using the null output device. Here is my /etc/modprobe.conf: alias eth0 e1000 alias snd-card-0 snd-intel8x0 install snd-intel8x0 /sbin/modprobe --ignore-install snd-intel8x0 && /usr/sbin/alsactl restore >/dev/null 2>&1 || : remove snd-intel8x0 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0 alias usb-controller ehci-hcd alias usb-controller1 uhci-hcd alias eth1 3c59x # disable ipv6 since it can DNS resolution delays alias net-pf-10 off Everything is fine with 1.6.
postscript: It may not be related but when I shut off iptables (for some network testing) it hung when trying to update the modules. I don't have the output from ps aux, but it appeared to be the step where it says "Unloading iptables modules:" Stopping and starting iptables works fine in 1.6.
*** This bug has been marked as a duplicate of 143059 ***