ACK/cmt / APPLIED[E]: [SRU][B/OEM-B/D/E/unstable][PATCH 0/2] reboot will introduce an alarm 'beep ...' during BIOS phase

Seth Forshee seth.forshee at
Tue Aug 20 21:17:48 UTC 2019

On Fri, Aug 16, 2019 at 10:13:47AM +0800, Hui Wang wrote:
> BugLink:
> Since this fix is still in the maintainer's tree, I add the UBUNTU: SAUCE:
> prefix in the patch title.
> And this patchset is fixing a bug in the oem project, so please merge the
> patchset to OEM-B asap.
> [Impact]
> We often hear the Beep noise when a couple of LENOVO laptops reboot, the
> reproduce rate is about 3/10.
> [Fix]
> make the codec enter D3 before rebooting or poweroff, this can fix the issue.
> [Test Case]
> Tested on those LENOVO latpops, reboot 50 times, didn't reproduce the
> noise issue.
> [Regression Risk]
> Low. We tested this patch on different lenovo and dell laptops, they
> all worked well as bfore.

These patches are upstream now, so the "UBUNTU: SAUCE:" and reference to
the sound tree can be removed when applying.

Acked-by: Seth Forshee <seth.forshee at>

Applied to eoan/master-next with the above changes. The patches were in
5.3-rc5 and are thus already present in unstable. Thanks!

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