** Description changed: - In the ubuntu-20.04, we integrate the alsa-lib-1.2.1.2, and the ucm for - this version is alsa-ucm-conf-1.2.1.2, in this package, the ucm2 folder - is named by changed card name and longname (patches are in the - v5.5-rc1). + In the ubuntu-20.04, we integrate the alsa-lib-1.2.1.2, and from the + alsa-lib-1.2.1, the ucm is put into a standalone package alsa-ucm-conf, + and from the 1.2.1, the alsa-lib supports the ucm2. - To make the focal kernel work with alsa-lib-1.2.1.2, we need to backport - those patches. + In the alsa-ucm-conf-1.2.1.2, the ucm2 folders are named by new + card name or longname, kernel-v5.5-rc1 has patches to change those + names to new names. now we backport them to focal kernel. + + [Impact] + booting with the focal kernel, the audio driver can't find the ucm2 + confs, that is becuase alsa-lib-1.2.1 requires new cardname and long + name, but focal kernel provides the old card names. + + [Fix] + backport 3 patches from v5.5-rc1. + + + [Test Case] + install the 20.04 daily build image, install the linux-firmware and + alsa-ucm-conf, booting with the kernel which have those 3 patches, + the alsa-lib could find the correct ucm2 confs. + + [Regression Risk] + It is low risk to focal. + If users install focal kernel to bionic or disco, it will break + the audio since the ucm in the bionic and disco still follow the old + card name and longname, we need to link a new copy ucm named by new + cardname or longname in the bionic and disco.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1862712 Title: change the ASoC card name and card longname to meet the requirement of alsa-lib-1.2.1 (Focal) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862712/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
