On Tue, 2023-01-03 at 14:29 +0100, Mark Jonas wrote: > 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}"
Thanks for debugging this, please do send some patches as we should fix this. Without having gone into the details the direction sounds right to me. Cheers, Richard
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