Hi, > I have difficulties getting core-image-base and QEMU x86-64 sound > output working. I do not even get to the point of having a visible > ALSA sound device. > > What part of the puzzle am I missing? > > Alternatively, can someone point me to a (simple) YP image where sound > works with QEMU x86 or x86-64? > > I built a core-image-base image from latest YP Poky [dunfell,langdale] > with the following additions in a default local.conf: > > MACHINE = "qemux86-64" > > # Load kernel modules matching QEMU audio support > KERNEL_MODULE_AUTOLOAD += "snd-ens1370" > > # Check ALSA cards available > IMAGE_INSTALL:append = " alsa-utils" > > EXTRA_IMAGE_FEATURES += "debug-tweaks"
I was able to solve part of the riddle. Now I am wondering whether I hit a bug in the meta/conf/machine/qemux86*.conf files. The conf/machine/qemux86*.conf recommends the installation of the snd-ens1370 module. (since https://git.openembedded.org/openembedded-core/commit/?id=112775995158cf6c504fd6beef345ee446f4f11d) MACHINE_EXTRA_RRECOMMENDS = "kernel-module-snd-ens1370 kernel-module-snd-rawmidi" Thus, I assumed that (as suggested by https://docs.yoctoproject.org/dev-manual/qemu.html) QEMU would create an ENS1370 device. - ``audio``: Enables audio in QEMU. The MACHINE option must be either "qemux86" or "qemux86-64" in order for audio to be enabled. Additionally, the ``snd_intel8x0`` or ``snd_ens1370`` driver must be installed in linux guest. Actually, the sound device in the virtual machine is an Intel 8x0 type. root@qemux86-64:~# lspci [..] 00:04.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01) [..] After installing the snd-intel8x0 module into the image and adding it to the auto-loaded modules, I can finally see an ALSA card. IMAGE_INSTALL:append = " kernel-module-snd-intel8x0" KERNEL_MODULE_AUTOLOAD += "snd-ens1370 snd-intel8x0" (see https://gitlab.com/toertel/meta-qemusound) root@qemux86-64:~# cat /proc/asound/cards 0 [I82801AAICH ]: ICH - Intel 82801AA-ICH Intel 82801AA-ICH with STAC9700,83,84 at irq 20 Then, isn't it a bug in the meta/conf/machine/qemux86*.conf files that (only?) the kernel-module-snd-ens1370 is recommended? Shouldn't the kernel-module-snd-intel8x0 be recommended (additionally?)? Staying in line with the Poky QEMU documentation I offer to send a patch which adds kernel-module-snd-intel8x0 to MACHINE_EXTRA_RRECOMMENDS of the meta/conf/machine/qemux86*.conf files. Shouldn't then also linux-yocto.inc be amended such that the KERNEL_MODULE_AUTOLOAD is set in case it is a qemux86* kernel and the DISTRO_FEATURES contain alsa? ALSA_MODULES = "${@bb.utils.contains("DISTRO_FEATURES", "alsa", " snd-ens1370 snd-intel8x0", "", d)}" KERNEL_MODULE_AUTOLOAD:qemux86 += "${ALSA_MODULES}" KERNEL_MODULE_AUTOLOAD:qemux86-64 += "${ALSA_MODULES}" Cheers, Mark
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