There is no beep with eg. "beep", "ping -a", or an ascii BEL on tty, despite beep_mode set to 1 for snd-hda-intel. Alsamixer doesn't show an option to enable/disable beeping via the intel soundcard. There's no hardware beeper. alsa-info: http://www.alsa-project.org/db/?f=7af87ea2bd9dd9925a33ddba59722d6625d8c66b
This Realtek codec actually doesn't seem to provide a digital beep widget, so it's no bug.
I actually had a similar problem with a similar Realtek codec --no Beep after the snd_hda_intel module was loaded. None of the module parameters made the pcspkr operational. I believe it is a bug. I solved it by using the hda-analyzer and changing some things in node 0x0b...the same node appears in the bug reporter's alsa-info output. By the way Takashi, I note that you are the writer of the Kernel Documentation HD-Audio.txt. I followed your suggestions especially with the "hda-analyzer" tool from alsa and got my pc beep working concurrently with the hd sound. here's the alsa-info output for my node 0x0b: Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Control: name="Mic Playback Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Control: name="Mic Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x0f 0x0f] Connection: 5 0x18 0x19 0x1a 0x1b 0x1d