** 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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1867704 Title: alsa/hdmi: support nvidia mst hdmi/dp audio Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1867704/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
