** Description changed: - this is for tracking purpose + This patchset will add support of mst audio for nvidia hdmi/dp, this + patchset changes lots of common code on hda_jack and hdmi codec, so it + is not easy to say it is 100% safe for other machines, but our oem + project needs this patchset to be backported to ubuntu kernel, because + the tight sechdule of oem project, we backport this patchset to B and + OEM-B first, if the hdmi audio works well for a period of time after + this patchset is merged, I will backport this patchset to focal, maybe + eoan as well. + + [Impact] + On some LENOVO I+N machines, when setting the graphic mode to discrete, + The dp/hdmi audio on the Docking Gen2 can't work with this machine + + LENOVO Docking Gen2 + + [Fix] + Nvidia developer submit the mst audio support to 5.5-rcN and 5.6-RC1, + those patches could fix this issue. + + [Test Case] + set the machien to discrete, plug the dock gen2 to it, then boot, after + booting, plug hdmi or dp to dock gen2, the hdmi or dp audio works. + + test other machines without Nvidia graphic or without gen2, their hdmi/dp + audio still work. + + + [Regression Risk] + Low, those patches come from mainline kernel, I have tested those patches + on the machiens with or without nvidia hdmi, and on the machines with or without + docks, all worked well as before.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867704 Title: alsa/hdmi: support nvidia mst hdmi/dp audio To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1867704/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
